| THE FURUKAWA ELECTRIC CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120118018 | OPTICAL FIBER PREFORM, METHOD OF MANUFACTURING OPTICAL FIBER PREFORM, AND METHOD OF MANUFACTURING OPTICAL FIBER - A porous layer is formed by depositing a silica glass particle around a core rod. The porous layer is dehydrated. The dehydrated porous layer is sintered under a decreased pressure until the dehydrated porous layer becomes a translucent glass layer containing a closed pore. The translucent glass layer is vitrified under an ambient atmosphere including an inert gas other than a helium gas. | 05-17-2012 |
| 20120027343 | WAVELENGTH DIVISION MULTIPLEX OPTICAL REGENERATION SYSTEM AND WAVELENGTH DIVISION MULTIPLEX OPTICAL REGENERATION METHOD - An optical regeneration system for regenerating a degenerated signal light, comprising a regeneration device having at least one of a soliton converter, a pulse roller, a Kerr-shutter and a soliton purifier. The solilton converter uses an anomalaous-dispersion fiber (ADF) having a fiber length up to three times the soliton frequency, and the pulse roller is provided with a pulse roller fiber having high non-linear characteristics. The Kerr-shutter comprises an optical LO (local oscillation) generator for generating an optical LO on an OPLL (optical phase locked loop), a phase comparator for detecting the phase difference between an externally-input signal light and an optical LO, and a control unit for regulating the repeated frequency of an optical LO based on the phase difference. The soliton purifier has a soliton fiber disposed between two optical fibers. | 02-02-2012 |
| 20110200480 | COPPER ALLOY MATERIAL FOR ELECTRIC/ELECTRONIC PARTS - A copper alloy material for electric/electronic parts, containing Co in an amount of 0.7 to 2.5 mass % and Si in an amount that gives a mass ratio of Co and Si (Co/Si ratio) within the range from 3.5 to 4.0, with the balance being Cu and unavoidable impurities, wherein the grain size is 3 to 15 μm. | 08-18-2011 |
| 20110200479 | COPPER ALLOY MATERIAL FOR ELECTRIC/ELECTRONIC PARTS - A copper alloy material for electric/electronic parts, containing Co and Si as additive elements, wherein, a compound A is dispersed, which is composed of Co and Si and has an average particle diameter of 5 nm or more but less than 50 nm, and at least one compound is dispersed, which is selected from: a compound B which does not contain one or any of Co and Si and has an average particle diameter from 50 to 500 nm, a compound C which contains both of Co and Si and another element and has an average particle diameter from 50 to 500 nm, and a compound D which is composed of Co and Si and has an average particle diameter from 50 to 500 nm; a grain size of the copper alloy matrix is 3 to 35 μm; and an electrical conductivity is 50% IACS or more. | 08-18-2011 |
| 20110186192 | COPPER ALLOY MATERIAL FOR ELECTRIC/ELECTRONIC PARTS AND METHOD OF PRODUCING THE SAME - A copper alloy material for an electric/electronic part, having a composition comprising Co 0.5 to 2.0 mass % and Si 0.1 to 0.5 mass %, with the balance of Cu and inevitable impurities, in which a copper alloy of a matrix has a grain size of 3 to 35 μm, a precipitate composed of Co and Si has a particle size of 5 to 50 nm, the precipitate has a density of 1×10 | 08-04-2011 |
| 20110186187 | COPPER ALLOY - A method of producing a copper alloy containing: Ni and/or Si and at least one or more of B, Al, As, Hf, Zr, Cr, Ti, C, Fe, P, In, Sb, Mn, Ta, V, S, O, N, Misch metal (MM), Co, and Be, the copper alloy having a precipitate X composed of Ni and Si, and a precipitate Y composed of Ni and/or Si, and at least one or more of B, Al, As, Hf, Zr, Cr, Ti, C, Fe, P, In, Sb, Mn, Ta, V, S, O, N, Misch metal (MM), Co, and Be, in which a grain diameter of the precipitate Y is 0.01 to 2 μm. | 08-04-2011 |
| 20110174520 | INSULATED ELECTRIC WIRE - Disclosed is an insulated electric wire having a conductor and one or more insulating layers covering the conductor, the insulated electric wire comprising a polyester-based resin composition which constitutes at least one layer of the insulating layers and comprises a polyester-based resin (A) containing a liquid crystal polymer in an amount of 5-25 parts by mass relative to 75-95 parts by mass of a polyester-based resin other than liquid crystal polymers. | 07-21-2011 |
| 20110171486 | COPPER FOIL FOR HIGH FREQUENCY CIRCUIT, METHOD OF PRODUCTION AND APPARATUS FOR PRODUCTION OF SAME, AND HIGH FREQUENCY CIRCUIT USING COPPER FOIL - A copper foil reducing transmission loss at a high frequency and excellent in bond strength with a resin substrate, including at least a granular layer and a columnar layer in its thickness direction, the columnar layer being formed on at least one surface of the granular layer forming the copper foil or the granular layer being formed on at least one surface of the columnar layer forming the copper foil, the relation of the thickness A of the granular layer and the thickness B of the columnar layer in the copper foil being preferably A/(A+B)=40 to 99%, a method of production and apparatus for production for the same, and a high frequency circuit using the same. | 07-14-2011 |
| 20110169483 | ROTATION ANGLE DETECTION DEVICE - A rotation angle detection device comprises angle detection means including detection circuits including detection element members consisting of coils and resistances, and inductance changing means for changing inductance of said coils corresponding to rotation of a rotation body to be measured, reference pulse voltage generating means for making said detection circuits generate output signals, and operating means for calculating output signals of said detection circuits, wherein reference pulse voltage generated by said reference pulse voltage means and output voltages of said detection circuits output when said reference pulse voltage is input are compared for calculating rotation angle of said rotation body to be measured. | 07-14-2011 |
| 20110097035 | BROADBAND WAVELENGTH MULTIPLEXING AND DEMULTIPLEXING FILTER AND OPTICAL SPLITTER WITH OPTICAL SIGNAL MULTIPLEXING AND DEMULTIPLEXING FUNCTION - Two Mach-Zehnder optical interferometer circuits | 04-28-2011 |
| 20110094635 | COPPER ALLOY - A method of producing a copper alloy containing a precipitate X composed of Ni and Si and a precipitate Y that comprises (a) Ni and 0% Si, (b) Si and 0% Ni, or (c) neither Ni nor Si, wherein the precipitate X has a grain size of 0.001 to 0.1 μm, and the precipitate Y has a grain size of 0.01 to 1 μm. | 04-28-2011 |
| 20110030924 | HEAT SINK WITH HEAT PIPES AND METHOD FOR MANUFACTURING THE SAME - A heat sink to be used with a heat source can include a base portion and a fin portion. The base portion can include a plurality of heat pipes and a space formed at least partially between adjacent heat pipes. The base portion can also include a first plate thermally connected to the heat source and a second plate thermally connected to the fin portion. The plurality of heat pipes contacts the first plate and the second plate. The plurality of heat pipes can also include a first portion that is closer than a second portion to the heat source. Additionally, a distance between adjacent heat pipes is smaller at the first portion than at the second portion. | 02-10-2011 |
| 20110026888 | OPTICAL MODULE MOUNTING UNIT AND OPTICAL MODULE - An optical module includes a module housing body including an electrical connection section for electrically connecting the electronic substrate and the optical module to each other and a housing section for housing the optical module, where the module housing body is mounted on the electronic substrate in such a manner that an electrical connection terminal of the electronic substrate and the electrical connection section is connected to each other and a fixing member for maintaining a state in which an electrical connection terminal of the optical module has contact with the electrical connection section in the module housing body. The optical module is housed in the housing section and is fixed in a removable manner by the fixing member, and the optical waveguide and the optical element are configured to be optically coupled to each other in a state in which the optical module is fixed. | 02-03-2011 |
| 20110017337 | FLEXIBLE TUBE FOR TRANSPORTING CRYOGENIC FLUID AND STRUCTURE FOR DETECTING LEAKAGE OF FLUID IN TUBE - Provided is a flexible tube which is used to load fluid from a floating facility on the sea onto a tanker, which is suitable for transport of cryogenic fluid such as LNG, and which is capable of quickly and reliably detecting leakage of the fluid in the tube. Also provided is a structure for detecting leakage of fluid in a tube. A water impermeable and heat insulating layer is provided on the outer periphery of a heat insulating layer. The water impermeable and heat insulating layer, together with the heat insulating layer, thermally insulates LNG flowing through a corrugated tube from the outside of a flexible tube. Unlike the heat insulating layer, the water impermeable and heat insulating layer is poor in liquid permeability, and fluid such as LNG hardly permeates the water impermeable and heat insulating layer. That is, the water impermeable and heat insulating layer serves as a water impermeable layer between the inside and outside of the water impermeable and heat insulating layer. | 01-27-2011 |
| 20110014443 | ADHESIVE TAPE FOR ELECTRONIC COMPONENT FABRICATION - Problem to be Solved by the Invention: To provide a adhesive tape for electronic component fabrication, having extremely high antistatic performance, superior adherence between an antistatic layer and a adhesive layer, does not cause corrosion of a magnetic head that is comprised of a metal such as pure copper or the like, and alumina to occur, and which is easier to be released again. | 01-20-2011 |
| 20110009015 | FRETTING-RESISTANT CONNECTOR AND PROCESS FOR MANUFACTURING THE SAME - A fretting-resistant connector, having an organic coating that is formed of an organic compound which has an ether linkage group at least a part on a surface of an electrically conductive metal material. | 01-13-2011 |
| 20110005303 | FLUID CONVEYING TUBE AND FLUID LEAKAGE DETECTING SYSTEM - Provided are a fluid conveying tube and a fluid leakage detecting system which can convey a cryogenic fluid such as LNG and which can quickly and reliably detect leakage of the fluid within the tube and the position of the leakage. An optical fiber | 01-13-2011 |
| 20110003403 | TESTING METHOD OF SURFACE-EMITTING LASER DEVICE AND TESTING DEVICE THEREOF - A method of performing a wafer level burn-in test for a plurality of surface-emitting laser devices formed on a wafer includes causing a plurality of contact electrodes arranged in a same plane with a pitch same as that of the surface-emitting laser devices being electrically connected to each other to have contact with pad electrodes of the surface-emitting laser devices, respectively, and applying a current to second electrodes of the surface-emitting laser devices and the contact electrodes. The wafer level burn-in test is performed while heating the wafer at a predetermined temperature. Laser lights emitted from the surface-emitting laser devices are monitored during the wafer level burn-in test. | 01-06-2011 |
| 20100322573 | OPTICAL FIBER CABLE - It is an object of the present invention to provide an optical fiber cable which can reliably prevent increased transmission loss due to damage of the optical fiber as a result of the egg-laying behavior of cicadas. The cable includes at least an optical fiber | 12-23-2010 |
| 20100317265 | CHAMFERING APPARATUS FOR CHAMFERING GLASS SUBSTRATES - A chamfering apparatus is used to chamfer a peripheral edge of a glass substrate. The chamfering apparatus includes a grindstone having a cylindrical hollow end portion; a grindstone driving unit that rotates the grindstone around an axis of the cylindrical hollow end portion; a substrate rotation-driving unit that rotates the glass substrate around either one of an axis of the outer periphery and an axis of the center circular hole; and a pressing unit that presses the grindstone to the glass substrate such that an annular end surface of the grindstone contacts with an edge of either one of the outer periphery and the inner periphery of the glass substrate while the cylindrical hollow end portion of the grindstone faces with one of the outer periphery and the inner periphery of the glass substrate. | 12-16-2010 |
| 20100315074 | ROTATION ANGLE DETECTOR - A rotation angle detector, comprises a magnet having at least a top surface, a bottom surface and a peripheral surface, that is fixed at a detectable rotation body and the same is rotated as integral therewith, a magnetic detecting unit for detecting a strength of a magnetism for the magnet, that is arranged at a peripheral corner part as in vicinity thereof to be formed with the top surface or the bottom surface and with the peripheral surface of the magnet and an arithmetic processing unit for calculating a rotation angle of the detectable rotation body with using an output of the magnetic detecting unit. A part to be formed by removing a part of the peripheral corner part as all around thereof forms a connecting face to correspond between the top surface or the bottom surface and the peripheral surface, and the magnetic detecting unit is arranged at the connecting face as in vicinity thereof. | 12-16-2010 |
| 20100294534 | CONDUCTOR WIRE FOR ELECTRONIC APPARATUS AND ELECTRICAL WIRE FOR WIRING USING THE SAME - Disclosed herein is a conductor wire for electronic device, which has high strength and excellent electrical conductivity and is composed of a copper alloy containing 0.5-3.0 mass percent, 0.1-1.0 mass percent of silicon, and the balance being copper and inevitable impurities. The copper alloy may further contain 0.1-3.0 mass percent of nickel and may further contain the sum total of 0.05-1.0 mass percent of one or two or more elements selected from the group consisting of iron, silver, chromium, zirconium and titanium. The copper alloy may also contain the sum total of 0.01-3.0 mass percent of one or two or more elements selected from the group consisting of 0.05-0.5 mass percent of magnesium, 0.1-2.5 mass percent of zinc, 0.1-2.0 mass percent of tin, 0.01-0.5 mass percent of manganese and 0.01-0.5 mass percent of aluminum. | 11-25-2010 |
| 20100284431 | OPTICAL PULSE TRAIN GENERATOR - An optical pulse train generator | 11-11-2010 |
| 20100284190 | ILLUMINATION DEVICE - An illumination device comprises a light reflecting plate, a circuit board, and a point like light source, the light reflecting plate or a combination of the light reflecting plate and the circuit board forming a receiving concave portion. The point like light source is arranged in the receiving concave portion, wherein a brightness of a light emitted from the point like light source is to be up to 30000 cd/m | 11-11-2010 |
| 20100284062 | WAVELENGTH DETERMINING APPARATUS, METHOD AND PROGRAM FOR THIN FILM THICKNESS MONITORING LIGHT - A multi-layer optical thin film filter comprising plural deposited optical thin films, wherein optical thin film thickness for each of said optical thin films has a predetermined wavelength spectrum in a predetermined gain equalization band and a predetermined wavelength spectrum in a pumping light transmission band other than said gain equalization band. | 11-11-2010 |
| 20100278488 | OPTICAL CONNECTOR - The optical connector, comprising: a first plug having a first ferrule for holding a first multiple optical fiber; a second plug having a second ferrule for holding a second multiple optical fiber; a first housing on which the first plug is detachably fixed; a second housing which is detachably fixed on the first housing and on which the second plug is fixed in such a manner that each edge face of optical fibers of the first multiple optical fiber and each edge face of optical fibers of the second multiple optical fiber are mutually adjusted, and the first housing has a first ferrule positioning member for positioning the first ferrule in relation to the second ferrule. | 11-04-2010 |
| 20100270063 | ULTRATHIN COPPER FOIL WITH CARRIER AND PRINTED CIRCUIT BOARD USING SAME - An ultrathin copper foil with a carrier not causing blistering at a release layer interface, having a low carrier peeling force, friendly to the environment, and enabling easy peeling of a carrier foil and an ultrathin copper foil even under a high temperature environment and a printed circuit board enabling a stable production quality of a base of a printed circuit board for fine pattern applications using the ultrathin copper foil with the carrier, that is, a ultrathin copper foil with a carrier comprising a carrier foil, a diffusion prevention layer, a release layer, and an ultrathin copper foil, wherein the release layer is formed by a metal A for retaining a release property and a metal B for facilitating plating of the ultrathin copper foil, a content “a” of the metal A and a content “b” of the metal B forming the release layer satisfying an equation: | 10-28-2010 |
| 20100269517 | MODULE FOR COOLING SEMICONDUCTOR DEVICE - A module for cooling a heat generating element comprising a heat receiving plate thermally connected to at least one heat generating element; a heat transfer device one end portion of which is thermally connected to the heat receiving plate and other end portion of which is thermally connected to a heat dissipating plate; a thermoelectric cooler one face of which is thermally connected to one face of the heat dissipating plate; a first heat sink thermally connected to other face of the heat dissipating plate; and a second heat sink thermally connected to other face of said thermoelectric cooler. | 10-28-2010 |
| 20100265971 | CASCADE RAMAN LASER - The invention provides a cascade Raman laser including a pumping laser light source that generates pumping light, a cascade Raman resonator having an input-side optical reflector that receives the pumping light and selectively reflects light of each wavelength corresponding to a n-th Stokes ray (n is an integer more than 1) of Raman scattering to the pumping light, a Raman optical fiber that is connected to the input-side optical reflector and generates Raman scattering light at least by the pumping light and an output-side optical reflector that is connected to the Raman optical fiber and selectively reflects light of each wavelength corresponding to the n-th Stokes ray and a blocking device interposed between the pumping laser light source and the cascade Raman resonator and blocks the first Stokes ray generated within the cascade Raman resonator from entering the pumping laser light source side. | 10-21-2010 |
| 20100247369 | ALUMINUM MATERIAL WITH HIGH FORMABILITY - An aluminum material, which is composed of crystal grains having different crystal orientations, in which the crystal grains comprise Cube-oriented crystal grains, Brass-oriented crystal grains and Copper-oriented crystal grains with a balance of crystal grains of other orientations, and in which the proportion of the Cube-oriented crystal grains is from 0.3 to 0.7, the proportion of the Brass-oriented crystal grains is from 0.1 to 0.5, the proportion of the Copper-oriented crystal grains is 0.2 or less, and the total proportion of these orientations is from 0.4 to 1.0; and a car component using the same. | 09-30-2010 |
| 20100236720 | APPARATUS FOR MELT-ADHERING RESIN PIPES - An apparatus ( | 09-23-2010 |
| 20100233753 | OPTICAL MEASURING DEVICE AND METHOD THEREFOR - The light measurement apparatus of the invention, in which the light is irradiated to the sample dispersed in the liquid flowing through the flow passage, is used for measuring optical information of the sample. The apparatus includes a light source portion | 09-16-2010 |
| 20100231913 | METHOD FOR OPTICAL MEASUREMENT AND OPTICAL MEASUREMENT APPARATUS - An optical measurement apparatus can be provided, in which the sample is optically measured without loss of the illuminating light with high sensitivity. A glass plate as the transparent member | 09-16-2010 |
| 20100231037 | Vehicular Electric Power Source Controller - A vehicular electric power source controller that controls the electrification of an electrical load mounted in a vehicle includes: a first electrical load that are a portion of the electrical load mounted in the vehicle; a second electrical load that are electrified preferentially over first electrical loads when a vehicle is parked; an electric power source-switching ECU, an ACC relay and an IG relay that switch not only the electrification of the first electrical load to but also the electrification of the second electrical load; and an electric power source management ECU, a parked state ACC relay and a parked state IG relay that switch the electrification of only the second electrical load. The vehicular electric power source controller curbs wasteful electricity consumption while operating an electrical load that is used while the vehicle is parked. | 09-16-2010 |
| 20100195962 | OPTICAL SEMICONDUCTOR MODULE - An optical semiconductor module including a base having installed on an optical fiber and an optical semiconductor element, and a package which houses the base on a bottom thereof and has a first side wall with an optical section through which the optical fiber is led and a second side wall facing the first side wall, where the base is cut off to form a curved surface with respect to the bottom at a lower corner on a side of the base facing the second side wall of the housing, and a ratio of r/t is from 0.4 to 1.0, where t is a thickness of the base, and r is a curvature radius of the curved surface. | 08-05-2010 |
| 20100195689 | SURFACE EMITTING LASER ELEMENT ARRAY - A surface emitting laser element array comprises a plurality of surface emitting laser elements ( | 08-05-2010 |
| 20100188309 | RADAR ANTENNA - Provided is a radar antenna integrally formed on a dielectric radiation board to prevent occurrence of surface wave and capable of wide angle measurement. The radar antenna | 07-29-2010 |
| 20100187084 | SILVER-COATED STAINLESS STEEL STRIP FOR MOVABLE CONTACTS AND METHOD OF PRODUCING THE SAME - An electrical contact comprising a silver-coated stainless steel strip, which has an underlying layer comprising any one of nickel, cobalt, nickel alloys, and cobalt alloys, on at least a part of the surface of a stainless steel substrate, and has a silver or silver alloy layer formed as an upper layer, in which a copper or copper alloy layer with a thickness of 0.05 to 2.0 μm is provided between the silver or silver alloy layer and the underlying layer; and a producing method of the above-described electrical contact, in which the silver-coated stainless steel strip is subjected to a heat-treating in a non-oxidative atmosphere. | 07-29-2010 |
| 20100185412 | ROTATION ANGLE DETECTOR AND PROCESS FOR DETECTING ROTATION ANGLE - A rotation angle detector for detecting an absolute rotation angle of a detectable rotation body to be rotated a multiple number thereof comprises a first rotation body to be rotated as a cycle of a rotation angle Tc corresponding to a rotation of the detectable rotation body, a first detecting unit for detecting the rotation angle of the first rotation body, a second rotation body to be rotated due to the first rotation body or the detectable rotation body and to be rotated as a cycle of a rotation angle Tm with corresponding to the rotation of the detectable rotation body, that is different from the cycle of the rotation angle Tc regarding the first rotation body. The rotation angle detector further comprises a second detecting unit for detecting the rotation angle of the second rotation body and a rotation angle detecting unit for detecting the absolute rotation angle of the detectable rotation body with reference to a first continuous signal for the angle to be detected by using the first detecting unit and to a second continuous signal for the angle to be detected by using the second detecting unit. The individual rotation bodies are rotated corresponding to the rotation of the detectable rotation body, and a rotation angle of the detectable rotation body to be rotated in a period of the individual rotation bodies to be rotated as 360 degrees is defined as the individual cycles of the rotation angle respectively. In a case where either one of the first rotation body or the second rotation body is assumed to be as a main rotation body, the other one thereof is assumed to be a substitutive, rotation body, the detecting unit for detecting the rotation angle of the main rotation body is defined as a main detecting unit and the detecting unit for detecting the rotation angle of the substitutive rotation body is defined as a substitutive detecting unit regarding the first detecting unit and the second detecting unit, the rotation angle detecting unit detects a number of rotations regarding the main rotation body with reference to a difference of phases ΔT between the first continuous signal for the angle and the second continuous signal for the angle, and calculates the absolute rotation angle of the detectable rotation body to be rotated the multiple number thereof with reference to the individual continuous signals for the angle and the number of rotations to be detected by using the main detecting unit. | 07-22-2010 |
| 20100158447 | OPTICAL CONNECTOR - An optical connector | 06-24-2010 |
| 20100148764 | ROTATION ANGLE DETECTOR - A rotation angle detector for detecting the rotation angle of a rotator to be measured which detects the flux density, generated depending on rotation of the rotator to be measured, of a ring-like magnet fixed to the rotator by means of a magnetic detection element. Since a soft magnetic member is interposed between the ring-like magnet and the rotator, rotation angle of the rotator can be measured accurately without being affected by the material or diameter of the rotator or the fixing state of the rotation angle detector to the rotator. Consequently, a rotation angle detector for detecting the rotation angle of a rotator to be measured accurately without being affected by the material or diameter of the rotator or the fixing state of the rotation angle detector to the rotator is presented. | 06-17-2010 |
| 20100147551 | INSULATION-COATED ELECTRIC CONDUCTOR - A multilayer insulation-coated electric conductor for a coil constituting a circuit by forming a welded portion in the coil, wherein at least one layer of the multilayer insulation-coating layers of the coated metal conductor is composed of at least one resin selected from the group consisting of a polyimide resin, a polyesterimide resin, and an H-class polyester resin. | 06-17-2010 |
| 20100136870 | SEMICONDUCTOR DEVICE, DISPLAY DEVICE AND DEVICE FABRICATING METHOD - The invention provides a display device using a one-dimensional substrate making layout of a substrate unnecessary and realizing a further low cost. | 06-03-2010 |
| 20100114524 | ROTATION ANGLE DETECTION APPARATUS - A rotation angle detection apparatus has angle detection means that has detection circuits each including a detection element part having a coil and a resistor and that also has inductance changing means that changes the inductance of the coil in accordance with the rotation of a rotation measurement target. The rotation angle detection apparatus further has reference pulse voltage generating means for causing the detection circuits to generate output signals; and calculating means for calculating the output signals of the detection circuits. The calculating means obtains an integral by integrating, for a predetermined time, a transient output voltage occurring when a reference pulse voltage generated by the reference pulse voltage generating means is input to the detection circuits. The calculating means then detects, based on the integral, a rotation angle of the rotation measurement target, whereby the number of components of the rotation angle detection apparatus can be reduced and error factors of the output signal of the detection circuits can be reduced. As a result, the logic circuits and amplifier circuits can be simplified and hence the cost of the rotation angle detection apparatus can be reduced. | 05-06-2010 |
| 20100111468 | OPTICAL INTEGRATED CIRCUIT AND OPTICAL INTEGRATED CIRCUIT MODULE - An optical integrated circuit includes a planar lightwave circuit, and a semiconductor element, which are fixed at one contact surface. A semiconductor optical amplifier (SOA) and a turnaround waveguide having a turnaround portion are formed on a semiconductor substrate. The turnaround waveguide is turned around on the second substrate and is connected to an output port of the SOA. An input port and an output port of the turnaround waveguide are optically coupled at the contact surface with an input port and an output port of the optical waveguides respectively. | 05-06-2010 |
| 20100109655 | ROTATION ANGLE DETECTOR - A rotation angle detector for detecting rotation angle of a rotator to be measured is provided. The detector includes a magnet which is fixed to the rotator to be measured and is rotated with the rotator to be measured and plural magnetic detection means respectively arranged at a prescribed angle, for detecting intensity of magnetic field generated by the magnet and outputting signals of electric charge based on the intensity of magnetic field. The detector further includes drive means for driving the plural magnetic detection means, where the drive means is capable of simultaneously changing magnetic sensitivities of the plural magnetic detection means in the same ratio. The detector further includes rotation angle calculation means for calculating rotation angle of the rotator to be measured based on signals output from the plural magnetic detection means. | 05-06-2010 |
| 20100106437 | SUBSCRIBER PREMISES SIDE OPTICAL NETWORK UNIT AND OPTICAL TRANSMISSION SYSTEM - To provide a method for detecting a charged state of a battery, for evaluating a deterioration thereof due to each of reaction processes that individually have rates of reactions as different from therebetween, and for performing a detection of the charged state of the battery, a method for detecting the charged state of the battery according to the present invention comprises the steps of: measuring a voltage V | 04-29-2010 |
| 20100105158 | METHOD OF FABRICATING SEMICONDUCTOR DEVICE - A method of fabricating a semiconductor device having high output power and excellent long-term reliability by preventing thermal adverse influence exerted at the time of window structure formation is provided. The method comprises a 1st step of forming predetermined semiconductor layers | 04-29-2010 |
| 20100088062 | ROTATION ANGLE DETECTION DEVICE - A rotation angle detecting device comprises a first rotation detecting unit ( | 04-08-2010 |
| 20100086311 | SURFACE EMITTING LASER, AND TRANSCEIVER, OPTICAL TRANSCEIVER, AND OPTICAL COMMUNICATION SYSTEM EMPLOYING THE SURFACE EMITTING LASER - A surface emitting laser includes a lower semiconductor multilayer mirror formed of a plurality of pairs of a high-refractive-index area and a low-refractive-index area; an active layer vertically sandwiched by cladding layers; a current confinement layer of Al | 04-08-2010 |
| 20100067099 | RAMAN AMPLIFIER, OPTICAL REPEATER, AND RAMAN AMPLIFICATION METHOD - A Raman amplifier according to the present invention comprises a plurality of pumping means using semiconductor lasers of Fabry-Perot, DFB, or DBR type or MOPAs, and pumping lights outputted from the pumping means have different central wavelengths, and interval between the adjacent central wavelength is greater than 6 nm and smaller than 35 nm. An optical repeater according to the present invention comprises the above-mentioned Raman amplifier and adapted to compensate loss in an optical fiber transmission line by the Raman amplifier. In a Raman amplification method according to the present invention, the shorter the central wavelength of the pumping light the higher light power of said pumping light. In the Raman amplifier according to the present invention, when a certain pumping wavelength is defined as a first channel, and second to n-th channels are defined to be arranged with an interval of about 1 THz toward a longer wavelength side, the pumping lights having wavelengths corresponding to the first to n-th channels are multiplexed, and an pumping light having a wavelength spaced apart from the n-th channel by 2 THz or more toward the longer wavelength side is combined with the multiplexed light, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-1)-th and (n-2)-th channels may be multiplexed, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-2)-th and (n-3)-th channels may be multiplexed, thereby forming the pumping light source. | 03-18-2010 |
| 20100067098 | METHODS TO CONTROL PHASE SHIFTS OF DELAY DEMODULATION DEVICES - The present invention provides methods to control phase shift of delay demodulation devices to reduce Polarization Dependent wavelength (PDλ) to be less than, for example, 0.5 GHz (i.e. 0.004 nm). The method to control phase shift in a Planar Lightwave Circuit (PLC) for demodulating Differential Quadrature Phase Shift Keying (DQPSK) comprising two Mach-Zehnder interferometers, each having two arm waveguides and heaters placed on the two arm waveguides, the method comprising the steps of: (first step) supplying electricity to at least one predetermined heater on the two arm waveguides of each Mach-Zehnder interferometer such that Polarization Dependent wavelength (PDλ) is reduced as electricity is supplied to the predetermined heaters; (second step) inserting a half-wave plate in the two arm waveguides of each Mach-Zehnder interferometer after PDλ is reduced in the first step; (third step) supplying electricity to the predetermined heater on the at least one of the two Mach-Zehnder interferometers used in the first step to control phases of the DQPSK signals after the half-wave plates are inserted. | 03-18-2010 |
| 20100066353 | ROTATION ANGLE DETECTION DEVICE - A rotation angle detection device comprises a magnet ( | 03-18-2010 |
| 20100060272 | ROTATION ANGLE DETECTOR - A rotation angle detector for detecting a rotation angle of a detectable rotation body, comprises: a primary rotation body to be attached to the detectable rotation body and to rotate as integral with the detectable rotation body; a secondary rotation body to rotate as a predetermined rotation ratio for the primary rotation body; a primary rotation detection mechanism to output a signal to be varied periodically as corresponding to a rotation of the primary rotation body; a secondary rotation detection mechanism to output a signal to be varied periodically as corresponding to a rotation of the secondary rotation body; a signal processing unit to calculate the rotation angles of the primary and the secondary rotation bodies using the signals that the primary and the secondary rotation detection mechanisms output; and an operation processing unit to calculate the rotation angle of the detectable rotation body, based on the calculated rotation angle of the primary or of the secondary rotation body, and on a relative rotation angle between the primary and the secondary rotation body, wherein at least any one of the following signals (A) to (D) is designed to have a cycle as different from one cycle for one rotation of the primary rotation body or of the secondary rotation body; (A) an output signal of the primary rotation detection mechanism; (B) an output signal of the secondary rotation detection mechanism; (C) an input signal from the primary rotation detection mechanism to be processed at the signal processing unit; and (D) an input signal from the secondary rotation detection mechanism to be processed at the signal processing unit. | 03-11-2010 |
| 20100053731 | DELAY DEMODULATION DEVICES - Delay demodulation devices with optimized temperature and pressure distribution on a Planar Lightwave Circuit (PLC) are provided. The delay demodulation device | 03-04-2010 |
| 20100046900 | Optical Fiber - The present invention provides an optical fiber in which composites constructing its coating are not complicated, so, there is also little constraint in view of production, and, moreover, delamination between a glass optical fiber and a primary layer, and a bubble in the primary layer hardly arise. The optical fiber of the present invention is an optical fiber which has a glass optical fiber which has a core | 02-25-2010 |
| 20100046064 | DELAY DEMODULATION DEVICES - A delay demodulation device, which reduces chip size and polarization dependent frequency (PDf), is provided. The delay demodulation device comprises: an input waveguide, which receives DQPSK signals; a Y-shape waveguide, which splits the input waveguide; a first Mach-Zehnder interferometer; and a second Mach-Zehnder interferometer. Both end of two arm waveguides of first Mach-Zehnder interferometer and both ends of two arm waveguides of second Mach-Zehnder interferometer are angled toward the center portion of a Planar Lightwave Circuit (PLC). Because of the angle, the length of the two arm waveguides of the first Mach-Zehnder interferometer and the length of the two arm waveguides of the second Mach-Zehnder interferometer in Z-direction can be shortened, and input couplers and output couplers of the Mach-Zehnder interferometers in Z-direction can be shortened as well. The area occupied by the Mach-Zehnder interferometers is also reduced. | 02-25-2010 |
| 20100045298 | METHOD AND APPARATUS FOR DETERMINING DETERIORATION OF SECONDARY BATTERY, AND POWER SUPPLY SYSTEM THEREWITH - A method for detecting SOC and SOH of a storage battery includes: calculating an SOC value of the storage battery with use of an SOC calculation unit based on a measured voltage value or a measured current value of the storage battery and calculating an SOH value of the storage battery with use of an SOH calculation unit based on the SOC value; further calculating a new SOC value with use of the SOC calculation unit based on the SOH value and calculating a new SOH value with use of the SOH calculation unit based on the new SOC value, these further calculations of SOC value and SOH value being repeated a prescribed n times of at least one so as to obtain an nth calculated SOC value and an nth calculated SOH value; outputting the nth calculated SOH value as an SOH output value and outputting the nth calculated SOH value as an SOC output value; and storing the SOH output value into a memory. | 02-25-2010 |
| 20100045271 | ROTATION ANGLE DETECTOR - To provide a rotation angle detector, which is characterized in that the rotation angle detector is for detecting a rotation angle of a measurable rotation body, by which it becomes able to measure the rotation angle of the measurable rotation body with an accuracy as higher even in a case where there may be happened such as an axial backlash or the like on an axis of rotation in the measurable rotation body, and then such a rotation angle detector | 02-25-2010 |
| 20100007341 | ROTATION ANGLE DETECTION DEVICE - A rotation angle detection device for detecting rotation angle of a rotator to be measured includes magnetic detection elements which are fixed to the circumference of the rotating body to be measured and detect magnetic flux density of magnet which is rotated with said rotating body to be measured. The device can calculate rotation angle of the rotating body to be measured from outputs of the magnetic detection elements. The device also includes magnetic bodies having two edge portions in positions where the magnet is inserted and are arranged along an area where a magnetic line of force of the magnet is formed. In this regard, gaps can be provided between one edge portion of the magnetic body in the direction of rotation center axis of the magnet and one side of the magnet in the direction of rotation center axis, and between another edge portion of the magnetic bodies in the direction of rotation center axis of the magnet and another side of the magnet in the direction of rotation center axis in some degree, and the magnetic detection elements are intermediated in a magnetic line of force which passes through the magnetic bodies. | 01-14-2010 |
| 20090324995 | GLASS SUBSTRATE FOR MAGNETIC DISK - There is provided a glass substrate for a magnetic disk in which a maximum height of bumps forming a roughness pattern at a period of smaller than 2 μm is 6 nm or lower in an annular area having a width of 30 μm on a main surface on which a magnetic recording area is formed, a number of bumps having a height of 3 nm or higher in a unit area having a circular arc length of 30 μm within the annular area is one or less, and a difference in arithmetic average roughness between unit areas within the annular area is 0.2 nm or smaller. | 12-31-2009 |
| 20090310637 | SURFACE EMITTING LASER ELEMENT AND METHOD OF FABRICATING THE SAME - A convex-portion forming layer is formed between a current-confinement aperture and a multilayer mirror, and forms a convex portion on each boundary between layers forming the multilayer mirror. The convex portion includes a plane equal to or larger than a spot size of the laser light, where the spot size is decided by a diameter of the current-confinement aperture, a predetermined diffraction angle of the laser light due to the current-confinement aperture, and a distance from the current-confinement aperture. | 12-17-2009 |
| 20090309585 | ROTATION ANGLE DETECTION DEVICE - A rotation angle detection device comprises a rotor ( | 12-17-2009 |
| 20090304036 | VERTICAL CAVITY SURFACE EMITTING LASER DEVICE AND VERTICAL CAVITY SURFACE EMITTING LASER ARRAY - In the surface emitting laser, low threshold electric current and high-power output are achieved while maintaining single mode characteristics. The surface emitting laser comprises a layered structure formed on a GaAs substrate | 12-10-2009 |
| 20090292034 | POLYCARBONATE FOAM - A polycarbonate foam that is a thermoplastic resin foam suitable for a backlight or a lighting box of an electric signboard, a luminaire, a display, and the like, has both high optical reflectivity and shape-retaining property, and has a short production cycle time. A polycarbonate foam contains a polycarbonate (A) and a fluorinated polycarbonate (B) and has a plurality of pores with a mean bubble diameter of 10 micrometers or less within. The foam is manufactured by a manufacturing method including holding a resin sheet containing the polycarbonate (A) and the fluorinated polycarbonate (B) in a pressurized inert gas atmosphere and incorporating the inert gas into the resin sheet, and heating the resin sheet incorporated with the inert gas to a temperature equal to or higher than a softening temperature of the polycarbonate under ambient pressure and foaming the resin sheet. | 11-26-2009 |
| 20090291587 | CONNECTION STRUCTURE - The present invention has an object of providing a connection structure capable of easily connecting an LED component to a flat cable. An LED unit | 11-26-2009 |
| 20090284407 | PULSE DOPPLER RADAR DEVICE - A judging and controlling part | 11-19-2009 |
| 20090278236 | SEMICONDUCTOR DEVICE, WAFER STRUCTURE AND METHOD FOR FABRICATING SEMICONDUCTOR DEVICE - A photo-resist used in photolithography in a microfabrication process may be formed uniformly even if trenches for separating semiconductor devices are formed before the microfabrication process. The two parallel trenches are formed between neighboring element forming regions in a p-type semiconductor layer containing a plurality of arrayed element forming regions and a convex portion formed between the two trenches is cut in separating the semiconductor devices. It becomes unnecessary to form a trench across a whole scribing region by this structure, so that a width of the trench may be reduced to be smaller than a thickness of a dicing blade or a diameter of a laser spot for example. As a result, it becomes possible to uniformly form the photo-resist used in the photolithography in the microfabrication process even if the trenches for separation are formed before the microfabrication process. | 11-12-2009 |
| 20090274432 | OPTICAL CONNECTOR UNIT - An optical connector unit according to the present invention is characterized in that the optical connector unit | 11-05-2009 |
| 20090274427 | OPTICAL FIBER AND OPTICAL DEVICE - An optical fiber includes a core region and a cladding region formed on an outer circumference of the core region. The cladding region includes a plurality of holes arranged around the core region and has a refractive index lower than a refractive index of the core region. A zero dispersion wavelength of the optical fiber is shorter than 1150 nanometers. The optical fiber propagates a light having a wavelength longer than 1000 nanometers exclusively in a fundamental mode of LP | 11-05-2009 |
| 20090273784 | Stokes parameter measurement device and method - The invention provides a Stokes parameter measurement device and Stokes parameter measurement method that enable high-precision measurement. The Stokes parameter measurement device comprises a polarization splitting device which comprises an optical element formed of a birefringent crystal material and which, by means of the optical element, splits signal light to be measured into a plurality of polarized light beams and adjusts the polarization state of one or more among the plurality of polarized light beams, and a light-receiving portion for performing photoelectric conversion of an optical component of the signal light split by and emitted from the polarization splitting device. | 11-05-2009 |
| 20090272152 | METHOD FOR MANUFACTURING OPTICAL FIBER - The present invention provides a method for manufacturing an optical fiber comprising the steps of forming a glass body containing a core, preparing a glass tube which will form a cladding portion, inserting the glass body into the glass tube, and collapsing the glass tube with the glass body by heating, wherein the method comprises a step of processing the glass tube such that it has at least one end tapered to which a pull is to be applied. The method may further comprise the steps of cleaning the outer surface of the glass tube, choosing the outer diameter of the glass body and the inner diameter of the glass tube such that the difference between the two diameters is not lower than 1.0 mm but not higher than 10.0 mm, choosing the inner diameter of a supporting tube attached to an inert end (opposite to the pulled end) of the glass tube such that it is equal to or higher than the diameter of the glass tube, with respect to the drawn end of the glass tube, processing the end such that its inner surface has a taper and the tapered end is sealed, and providing a spacer to the glass assembly such that the interval between the outer surface of the glass body and the inner surface of the glass tube exhibits a practically uniform profile over the full length of the glass assembly. | 11-05-2009 |
| 20090269015 | Optical fiber provided with reliable coating layers - An optical fiber is provided, which is unlikely to cause interlayer delamination between a glass optical fiber and a primary coating layer even when it is immersed in water. The optical fiber of the present invention includes a glass optical fiber | 10-29-2009 |
| 20090269006 | OPTICAL MODULE AND METHOD OF MANUFACTURING THEREOF - An optical module | 10-29-2009 |
| 20090263091 | OPTICAL FIBER - A relative refractive index difference Δ1 between a center core region and a cladding layer is 0.30% to 0.35%, a relative refractive index difference Δ2 between an outer core layer and the cladding layer is −0.10% to −0.04%, and Δ | 10-22-2009 |
| 20090257724 | NONLINEAR OPTICAL FIBER, NONLINEAR OPTICAL DEVICE, AND OPTICAL SIGNAL PROCESSING APPARATUS - A core includes a center core region, a core layer that is formed around the center core region and that has a refractive index lower than that of the center core layer, and at least one buffer core layer that is formed between the center core region and the core layer and that has a refractive index lower than that of the center core region and higher than that of the core layer. A cladding is formed around the core layer and that has a refractive index lower than that of the center core region and higher than that of the core layer. An effective core area at a wavelength of 1550 nm is equal to or smaller than 18 μm | 10-15-2009 |
| 20090256524 | METHOD FOR DETECTING OF BATTERY CONDITION - PROBLEM TO BE SOLVED: To provide a method for detecting a charged state of a battery, for evaluating a deterioration thereof due to each of reaction processes that individually have rates of reactions as different from therebetween, and for performing a detection of the charged state of the battery. | 10-15-2009 |
| 20090252470 | OPTICAL FIBERS AND OPTICAL TRANSMISSION SYSTEMS - Optical fibers and optical transmission systems, which are capable of broadband and large capacity single-mode optical transmission, and have low macrobends are provided. | 10-08-2009 |
| 20090252468 | Optical fiber preform including a non-axisymmetric cross section - A method for manufacturing an optical fiber includes the steps of covering an outer periphery of a first glass ( | 10-08-2009 |
| 20090250767 | ED INVERTER CIRCUIT AND INTEGRATE CIRCUIT ELEMENT INCLUDING THE SAME - A second semiconductor layer of a second nitride-based compound semiconductor with a wider bandgap formed on a first semiconductor layer of a first nitride-based compound semiconductor with a smaller bandgap includes an opening, on which a gate insulating layer is formed at a portion exposed through the opening. A first source electrode and a first drain electrode formed across a first gate electrode make an ohmic contact to the second semiconductor layer. A second source electrode and a second drain electrode formed across a second gate electrode that makes a Schottky contact to the second semiconductor layer make an ohmic contact to the second semiconductor layer. | 10-08-2009 |
| 20090245312 | SURFACE EMITTING LASER ELEMENT ARRAY - Provided is a surface emitting laser element array of low cost and high reliability. The surface emitting laser element array has a substrate having a semiconductor of a first conduction type; and a plurality of surface emitting laser elements each having, above the substrate, an active layer sandwiched between a first conduction type semiconductor layer area and a second conduction type semiconductor layer area and disposed between a upper reflective mirror and a lower reflective mirror, the surface emitting laser elements being separated from each other by an electric separation structure formed having such a depth as to reach the substrate. The first conduction type semiconductor layer area is arranged between the substrate and the active layer. The surface emitting laser element array further has a current blocking layer arranged between the substrate and the first conduction type semiconductor layer area; and two electrodes connected to the first conduction type semiconductor layer area and the second conduction type semiconductor layer area, respectively, and arranged on a side of the current blocking layer opposite to the substrate. | 10-01-2009 |
| 20090241604 | OPTICAL FIBER DRAWING METHODS AND DRAWING FURNACES - Drawing methods and drawing furnaces for drawing an optical fiber with small non-circularity by simple drawing system are provided. An optical fiber preform is received into a muffle tube and heated by a primary heater placed to surround the muffle tube. The optical fiber preform is heated such that a starting position of a meniscus portion is higher in its position than the top of the primary heater, wherein the meniscus portion is created at the bottom portion of the optical fiber preform. | 10-01-2009 |
| 20090241603 | OPTICAL FIBER MANUFACTURING METHODS - Optical fiber manufacturing methods, which manufacture optical fibers with uniform characteristics using a simple device construction, are provided. The optical fiber manufacturing methods comprise, drawing a glass fiber from a glass preform by heating and melting one end of the glass preform and coating at least one layer of resin around the circumference of the drawn glass fiber. The method includes the steps of decreasing the viscosity of the resin from an initial viscosity during a start-up process time to a steady viscosity as optical fiber draw speed increases, wherein the steady viscosity is a predetermined viscosity; and increasing the draw speed during the start-up process time to a faster steady speed. | 10-01-2009 |
| 20090239101 | GLASS SUBSTRATE AND THERMAL-ASSISTED MAGNETIC RECORDING DISK - A plurality of recording magnetization portions is arranged in a concentric manner around a center of a glass substrate. A plurality of non-magnetization portion having a thermal conductivity lower than that of the recording magnetization portions is formed each between adjacent recording magnetization portions along a circumferential direction on a main surface of the glass substrate. A mean squared roughness of a surface of an area where each of the non-magnetization portions is formed is equal to or smaller than 1 nanometer. | 09-24-2009 |
| 20090235522 | DEVICE AND METHOD FOR CRIMPING ELECTRIC WIRE TERMINAL - A terminal crimping device where an electric wire ( | 09-24-2009 |
| 20090232461 | Optical fiber and optical fiber ribbon - The present invention relates to an optical fiber accommodated in an optical fiber cable, and more particularly, to an optical fiber which optimizes optical fiber coating resin and color resin and restrains an increase in transmission loss of the optical fiber due to an operating environment and aged deterioration and provides an optical fiber and optical fiber ribbon without any increase of transmission loss irrespective of the operating environment and aged deterioration, and especially when exposed to water or high humidity. | 09-17-2009 |
| 20090231843 | PLANAR LIGHT SOURCE - A planar light source achieving high average luminance and little luminance unevenness is provided. | 09-17-2009 |
| 20090231842 | LIGHT REFLECTOR AND PLANAR LIGHT SOURCE - A light reflector and a planar light source achieving high average luminance and little luminance unevenness are provided. | 09-17-2009 |
| 20090221427 | SUPERCONDUCTING WIRE, SUPERCONDUCTING CONDUCTOR, AND SUPERCONDUCTING CABLE - A superconducting wire having at least a superconducting thin film and a stabilizing film formed one on top of another in order on a substrate having a predetermined width and a predetermined length, the superconducting wire having at least one cut made along a direction of the length of the superconducting wire, the superconducting wire being bendable at the cut in a width direction. | 09-03-2009 |
| 20090219014 | ROTATION SENSOR - A rotation sensor including: a main rotor that integrally rotates with a rotor to be measured; a sub-rotor that rotates in accordance with rotation of the main rotor with a different number of revolutions from that of the main rotor; a first detector detecting rotation of the main rotor; and a second detector detecting rotation of the sub-rotor. The rotation sensor detects an absolute rotation angle of the rotor to be measured from detection signals from the first detector and the second detector. Respective detection signals obtained from the first detector and the second detector are cyclically output in accordance with rotation of each rotor, and the following relationship is satisfied: | 09-03-2009 |
| 20090215096 | Collodial silica particle containing light-absorbing susbstance, nano light-absorbing material,absorption labeling nanobead kit, and method for detection or quantification of biological molecule using the colloidal silica particle containing light-absorbing substance - A colloidal silica particle containing a light-absorbing substance, comprising a colloidal silica particle and a light-absorbing substance distributed over the colloidal silica particle, wherein the light-absorbing substance is chemically bound to or adsorbed on a silica component. | 08-27-2009 |
| 20090213587 | LED LIGHTING DEVICE - An LED lighting device provided with a flat circuit body where LEDs are mounted in a lamp room that is constructed from a lamp body and a lens installed on a front opening of the lamp body, and with a reflector structure body for reflecting light that is emitted from the LEDs. Opening are formed in a wall section of the reflector structure body, and the LEDs of the flat circuit body are installed in the openings. As a result, the flat circuit body supported by the reflector structure body. | 08-27-2009 |
| 20090208200 | SYNCHRONOUS OPTICAL SIGNAL GENERATING DEVICE AND SYNCHRONOUS OPTICAL SIGNAL GENERATING METHOD - A synchronous optical signal generation device includes: an optical phase detector that compares the phase of a reference optical signal with a phase of an optical beat signal to generate a phase error signal; a shaping mechanism that shapes the phase error signal; and a voltage controlled optical signal generator that generates an optical beat signal based on the shaped phase error signal and that outputs the optical beat signal while feeding the optical beat signal back to the phase detector. | 08-20-2009 |
| 20090200645 | SEMICONDUCTOR ELECTRONIC DEVICE - A semiconductor electronic device comprises a substrate; a buffer layer formed on the substrate, the buffer layer including not less than two layers of composite layer in which a first semiconductor layer formed of a nitride-based compound semiconductor layer having a lattice constant smaller than a lattice constant of the substrate and a thermal expansion coefficient larger than a thermal expansion coefficient of the substrate and a second semiconductor layer formed of a nitride-based compound semiconductor having a lattice constant smaller than a lattice constant of the first semiconductor layer and a thermal expansion coefficient larger than a thermal expansion coefficient of the substrate are alternately laminated; an intermediate layer provided between the substrate and the buffer layer, the intermediate layer being formed of a nitride-based compound semiconductor having a lattice constant smaller than a lattice constant of the first semiconductor layer and a thermal expansion coefficient larger than a thermal expansion coefficient of the substrate; and a semiconductor active layer formed on the buffer layer, the semiconductor active layer being formed of a nitride-based compound semiconductor, wherein: thicknesses of the first semiconductor layers in the buffer layer are non-uniform thereamong, and at least one of the first semiconductor layer has a thickness greater than a critical thickness, the critical thickness being a thickness above which a direction of warp caused by the first semiconductor layer to the substrate is inverted. | 08-13-2009 |
| 20090195880 | LIGHT REFLECTION PLATE - A three-dimensional light reflection plate that can successfully prevent deformation of the light reflection plate, reduce initial cost and product cost, and facilitate increase in size and reflectance. The light reflection plate includes a bottom plate in which a plurality of mutually parallel slit holes are formed on a flat, light-reflective plate material and a mountain plate that is rectangular from a planar view of which a width direction cross-sectional shape is a mountain shape and in which insertion sections are formed in both width-direction end sections. The mountain plate is fixed to the bottom plate by the insertion sections of the mountain plate being inserted into the slit holes of the bottom plate. | 08-06-2009 |
| 20090189191 | SEMICONDUCTOR DEVICE - A semiconductor device includes a field effect transistor formed of a GaN-based compound semiconductor and having a source electrode, a drain electrode, and a gate electrode, and a diode formed of a semiconductor material having a gandgap energy smaller than a bandgap energy of the GaN-based compound semiconductor. A cathode electrode and an anode electrode of the diode are electrically connected to the source electrode and the gate electrode of the field effect transistor, respectively. | 07-30-2009 |
| 20090178340 | POWER SUPPLY APPARATUS FOR A SLIDING DOOR - Disclosed is a power supply apparatus for a sliding door. The power supply apparatus includes a body-side fixture mounted on an automobile body, a door-side fixture mounted on the sliding door, and a flat cable gripped in the body-side fixture and the door-side fixture for supplying a power to the sliding door. The flat cable is pulled out from the body-side fixture and/or the door-side fixture to form a convex flexural portion during opening and closing of the sliding door. The flat cable pull-out direction conforms with the protrusion direction of the convex flexural portion. | 07-16-2009 |
| 20090168829 | VERTICAL-CAVITY SURFACE-EMITTING LASER - A vertical-cavity surface-emitting laser (VCSEL) includes a substrate, and a layer structure including a first reflector, an active layer, and a second reflector, which are consecutively layered on the substrate, and a plurality of holes arranged in a two-dimensional structure periodically within a layer plane except for a specified area of the layer structure, wherein a pair of holes sandwiching therebetween the specific area and opposing each other have a dimension or shape different from the dimension or shape of others of the holes. | 07-02-2009 |
| 20090165902 | METHOD OF PRODUCING A COPPER ALLOY WIRE ROD AND COPPER ALLOY WIRE ROD - A method of producing a copper alloy wire rod, containing: a casting step for obtaining an ingot by pouring molten copper of a precipitation strengthening copper alloy into a belt-&-wheel-type or twin-belt-type movable mold; and a rolling step for rolling the ingot obtained by the casting step, which steps are continuously performed, wherein an intermediate material of the copper alloy wire rod in the mid course of the rolling step or immediately after the rolling step is quenched. | 07-02-2009 |
| 20090162020 | OPTICAL TRANSMISSION LINE AND OPTICAL TRANSMISSION SYSTEM - An optical transmission line includes a first optical fiber and a second optical fiber connected to the first optical fiber. The first optical fiber includes a core region formed at a center of the fiber and a cladding region formed around the core region. The cladding region includes air holes formed in a triangular lattice around the core region. The first optical fiber has a negative wavelength dispersion and a dispersion per slope of −200 nm to −50 nm at a wavelength of 1050 nm. The second optical fiber has a positive wavelength dispersion and the dispersion per slope of −800 nm to −50 nm at the wavelength of 1050 nm. | 06-25-2009 |
| 20090151998 | ELECTROMAGNETIC WAVE SHIELDING WIRING CIRCUIT FORMING METHOD AND ELECTROMAGNETIC WAVE SHIELDING SHEET - The electromagnetic wave shielding wiring circuit forming method of the present invention comprises the steps of: preparing a fine copper particle dispersion, by dispersing fine copper particles into a disperse medium (S) including an organic solvent (A) having an amide-based compound, an organic solvent (B) having a boiling point of 20° C. or higher at an ordinary pressure and having a donor number of 17 or more, an organic solvent (C) having a boiling point exceeding 100° C. at an ordinary pressure and comprising alcohol and/or polyhydric alcohol, and an organic solvent (E) having an amine-based compound, at specific ratios; coating or printing the fine copper particle dispersion onto a substrate, to form a wiring pattern comprising a liquid film of the fine copper particle dispersion; and firing the liquid film of the fine copper particle dispersion, to form a sintered wiring layer. | 06-18-2009 |
| 20090148112 | OPTICAL FIBER - A silica-based optical fiber includes a core and a cladding that is formed on an outer circumference of the core. The core includes three or more layers including a layer doped with at least one of germanium and fluorine, and a concentration of the germanium or the fluorine in each of the layers is controlled in such a manner that a Brillouin gain spectral peak is spread into a plurality of peaks on a Brillouin gain spectrum. With this scheme, an optical fiber is provided, which has stable characteristics in the longitudinal direction, and which has a high SBS threshold so that generation of the SBS can be effectively suppressed. | 06-11-2009 |
| 20090145168 | OPTICAL FIBER MANUFACTURING METHOD AND OPTICAL FIBER MANUFACTURING APPARATUS - A pressure detecting unit detects a pressure of supplying a resin to at least a hole for forming an innermost resin layer on an optical fiber from among a plurality of successive holes in a coating die. A control unit controls a discharge amount of a constant-rate pump that supplies the resin to the coating die in such a manner that a detected resin pressure becomes a predetermined value, and controls a temperature of the optical fiber so that the temperature of the optical fiber becomes a predetermined temperature in accordance with a variation of the discharge amount of the constant-rate pump. | 06-11-2009 |
| 20090142626 | GLASS SUBSTRATE FOR MAGNETIC DISK AND MAGNETIC DISK APPARATUS - A glass substrate for a magnetic disk satisfies Ra | 06-04-2009 |
| 20090140744 | METHOD AND DEVICE FOR DETERMINING STATE OF HEALTH OF THE BATTERY, AND BATTERY POWER SUPPLY SYSTEM - A method and the device are provided for determining state of health of the battery, in addition to the power supply system using the device, to reduce operational and processing load by expanding the data sampled at the time when the battery is caused to discharge square wave pulses into the square wave is provided. The method includes determining state of health of a battery by causing the battery to discharge square wave pulses with a prescribed cycle at a prescribed current value. Response voltages are sampled at a time of a pulse-discharge. The sampled response voltages are sampled into orthogonal square wave components. An amplitude of the square wave component is divided by the current value of the pulse-discharge to obtain a pseudo-impedance. A state of health of the battery based on the pseudo-impedance is determined. | 06-04-2009 |
| 20090129427 | OPTICAL MODULE - An optical module | 05-21-2009 |
| 20090123749 | Unit Optical Fiber - The present invention provides an optical fiber superior in yellowing resistance. An optical fiber according to the present invention has a coating made from a UV curable resin formed on the outer surface of a bare optical glass fiber, and is characterized in that the coated material includes an unreacted photoinitiator in an amount of 2.4×10 | 05-14-2009 |
| 20090123122 | OPTICAL FIBERS AND OPTICAL TRANSMISSION SYSTEMS - Optical fibers and optical transmission systems, which are capable of broadband and large capacity single-mode optical transmission, and have low macrobends are provided. The optical fiber made from pure silica comprising a core region, a cladding region at the circumference of the core region a coating layer made from a resin at the circumference of the cladding region, and having a cutoff wavelength of shorter than 1530 nm, and positive dispersion at 1550 nm, bending loss of less than 10 dB/m at a bending diameter of 20 mm, and an effective core area of 120 μm | 05-14-2009 |
| 20090122448 | GLASS SUBSTRATE FOR MAGNETIC DISK APPARATUS - A main surface of a glass substrate for a magnetic disk is disk-shaped and has a ski jump on an outer peripheral end portion of the main surface opposing a magnetic head slider to be loaded. A rate of change of angles of tangents to a slope of the ski jump in a radial direction in a range between an inner circumferential side and a transition point on the slope is equal to or less than 10/W μrad/mm where W is a width of the magnetic head slider. | 05-14-2009 |
| 20090113935 | PROCESS FOR PRODUCING GLASS BAR - Included are a reducing-heterogeneous-layer removing process of removing at least a part of a reducing heterogeneous layer in a surface of a plate glass manufactured through a float process, and a heating drawing process of heating and softening the plate glass from which at least the part of the reducing heterogeneous layer is removed in a heating furnace to draw the plate glass to a desirable thickness to form a glass strip. Thus provided is a method of manufacturing a glass strip capable of manufacturing a thin, rod-like glass strip with an excellent flatness even when a plate glass to be subjected to the heating drawing is a plate glass manufactured through the float process. | 05-07-2009 |
| 20090110393 | BROADBAND WAVELENGTH MULTIPLEXING AND DEMULTIPLEXING FILTER AND OPTICAL SPLITTER WITH OPTICAL SIGNAL MULTIPLEXING AND DEMULTIPLEXING FUNCTION - Two Mach-Zehnder optical interferometer circuits | 04-30-2009 |
| 20090104853 | METHOD OF MANUFACTURING DISK SUBSTRATE - A method of manufacturing a disk substrate includes a disk substrate forming step of forming a disk substrate; and an outer chamfering step of chamfering an outer edge of the disk substrate. The outer chamfering step includes chamfering the outer edge by bringing an end surface of a cylindrical-shaped outer chamfering grindstone having a hollow portion on its end into contact with the outer edge such that the hollow portion faces the outer edge while rotating each of the outer chamfering grindstone and the disk substrate. | 04-23-2009 |
| 20090100874 | GLASS STRIP MANUFACTURING METHOD - A glass strip manufacturing method includes heat-drawing a preform glass plate by softening the preform glass plate with heat and drawing the preform glass plate down to a desired thickness. The preform glass plate has a level of transmittance that allows radiant heat absorbed therein while passing therethrough to diffuse before locally accumulating therein. The minimum transmittance of the preform glass plate in a thickness of 3 millimeters at a wavelength of 800 to 2200 nanometers is 86 to 95%. | 04-23-2009 |
| 20090098778 | JOINT CONNECTOR - A joint connector according to the present invention is provided with a circuit board, a male connector having male terminals provided on the circuit board at a predetermined interval and standing in one direction and a direction that crosses the one direction, the male terminals being selectively connected by a copper foil circuit, and a female connector in which female connector elements each having female terminals inserted and interlocked in female terminal holders are stacked, wherein the male connector and the female connector are fit to each other. This achieves cost reduction and improvement in work efficiency in electric wire connection by attaining easy electric wire connection and branching. | 04-16-2009 |
| 20090097810 | HOLEY FIBER - A holey fiber, which has a zero-dispersion wavelength of less than 700 nm and operates as single mode under its zero-dispersion wavelength, is provided. The holey fiber according to the present invention comprises a core region that is formed at a center of the holey fiber; and a cladding region, formed at the circumference of the core region, which has a plurality of holes distributed as triangle lattice around the core region; wherein the holey fiber has a fundamental mode of less than 700 nm, a higher order mode, and the fundamental mode and the higher order mode confinement losses of less than 0.1 dB/m and more than 10 dB/m, respectively, at the zero-dispersion wavelength. | 04-16-2009 |
| 20090092400 | LIGHT SOURCE IN OPTICAL TRANSMISSION SYSTEM, WAVEFORM SHAPER, OPTICAL PULSE TRAIN GENERATOR AND OPTICAL REPRODUCTION SYSTEM - The present invention provides a pulse train generator comprising: a dual-frequency signal light source for generating a dual-frequency signal; a soliton shaper for soliton-shaping output light from the dual-frequency signal light source; and an adiabatic soliton compressor for performing adiabatic soliton compression on output light from the soliton shaper, and also provides a waveform shaper used in this pulse train generator, including a plurality of highly nonlinear optical transmission lines and a plurality of low-nonlinearity optical transmission lines which has a nonlinearity coefficient lower than that of the plurality of highly nonlinear optical transmission lines and which has a second-order dispersion value of which an absolute value is different from that of the plurality of highly nonlinear optical transmission lines. Further, the present invention provides a light source comprising a plurality of continuous light sources of which at least one oscillates in a multimode; a multiplexer for multiplexing output light from the continuous light sources; and a nonlinear phenomenon producer for producing a nonlinear phenomenon on output light from the multiplexer so as to suppress SBS (Stimulated Brillouin Scattering). | 04-09-2009 |
| 20090092358 | LIGHT INPUT/OUTPUT TERMINAL MODULE OF THE OPTICAL COMPONENTS AND BEAM CONVERTING APPARATUS - A light input/output terminal module | 04-09-2009 |
| 20090086770 | OPTICAL FIBER AND OPTICAL FIBER RIBBON, AND OPTICAL INTERCONNECTION SYSTEM - An optical fiber, made of silica-based glass, comprising a core and a cladding, each of the optical fiber having a mode field diameter of 5.5 μm or larger at a wavelength of 1100 nm, transmitting light with a wavelength of 1250 nm in a single mode, and having a bending loss of 1 dB/turn or smaller at a wavelength of 1100 nm when the optical fiber is bent with a curvature radius of 2 mm. | 04-02-2009 |
| 20090081477 | MATERIAL FOR ELECTRIC CONTACT AND METHOD OF PRODUCING THE SAME - A material for electric contact comprising, on a conductive substrate, a first layer composed of a noble metal or an alloy comprising the noble metal as a major component with an arithmetic average roughness Ra of (A) μm and, as an upper layer of the first layer, a second layer composed of a noble metal or an alloy comprising the noble metal as a major component with a covering thickness of from 0.001×(A) μm or more to (A) μm or less, and
| 03-26-2009 |
| 20090080890 | OPTICAL REPEATER DEVICE AND OPTICAL TRANSMISSION SYSTEM - An optical repeater device of the present invention comprises: a preamble compensating circuit | 03-26-2009 |
| 20090080844 | OPTICAL COMMUNICATION SYSTEM - A photonic bandgap fiber includes a core formed by a hole at its center, an outer cladding formed around the core, and an inner cladding formed between the core and the outer cladding, in which a two-dimensional Bragg grating is formed by periodically arranging a medium having a different refractive index. An optical fiber is connected to the photonic bandgap fiber, which has wavelength dispersion equal to or larger than 0 ps/nm/km and smaller than wavelength dispersion of the photonic bandgap fiber and D/S value, which is obtained by dividing the wavelength dispersion by dispersion slope, larger than D/S value of the photonic bandgap fiber. | 03-26-2009 |
| 20090080841 | METHOD OF CONNECTING OPTICAL FIBERS - A method of connecting a holey fiber to an optical fiber includes fusion splicing an end surface of the holey fiber and an end surface of the optical fiber thereby forming a joint section; and stretching the joint section while heating by pulling the holey fiber and the optical fiber away from each other in a longitudinal direction until an outer diameter of the joint section attains a predetermined value. | 03-26-2009 |
| 20090068639 | System and method of quantitatively determining a biomolecule, system and method of detecting and separating a cell by flow cytometry, and fluorescent silica particles for use in the same, and kit comprising plural kinds of the silica particles in combination - A system of quantitatively determining a biomolecule, which has: allowing fluorescent silica particles capable of emitting fluorescence detectable by a flow cytometer to capture a target biomolecule fluorescent-labelled for quantitative determination; detecting the fluorescence emitted from the fluorescent silica particles themselves by using the flow cytometer; and measuring the intensity of the fluorescence of the labelled target biomolecule, thereby quantitatively determining the target biomolecule. | 03-12-2009 |
| 20090067790 | FERRULE TRANSFER METHOD AND FERRULE HOLDER - Other end of a built-in optical fiber of a ferrule with one end of the built-in optical fiber matched with a splicing end surface and other end of the built-in optical fiber protruded from an end portion opposite to the splicing end surface and one end of a splicing optical fiber to be spliced are placed is fusion-sliced with the one end of the splicing optical fiber. After that, the ferrule is held by inserting a cylindrical portion of the ferrule into a holding unit of a ferrule holder from the splicing end surface. The ferrule is transferred while holding a stem extended on an opposite side of the holding unit of the ferrule holder and the splicing optical fiber. | 03-12-2009 |
| 20090067188 | LIGHT SOURCE - A first optical waveguide guides a pumping light emitted from a semiconductor laser. A second optical waveguide absorbs the pumping light and emits a spontaneous emission light having a wavelength longer than that of the pumping light. A third optical waveguide guides a light output from the second optical waveguide to outside. A wavelength selecting element is provided between the second optical waveguide and the third optical waveguide, across which a resonator is formed between the semiconductor laser side and an output side to outside. A wavelength of a laser light emitted from the resonator is set by controlling length of the second optical waveguide. | 03-12-2009 |
| 20090065235 | GROMMET - In a grommet ( | 03-12-2009 |
| 20090061253 | Plated material and electronic and elctronic parts using the plated material - A plated material | 03-05-2009 |
| 20090060509 | CUSTOMER PREMISES OPTICAL NETWORK UNIT AND OPTICAL TRANSMISSION SYSTEM - A customer premises optical network unit (ONU) comprises: an electrical/optical transform unit | 03-05-2009 |
| 20090060433 | OPTICAL FIBER - An optical fiber made of silica-based material includes a core and a cladding formed around the core. The core is doped with germanium dioxide, which increases refractive index and decreases acoustic-wave velocity, and aluminum oxide, which increases both refractive index and acoustic-wave velocity, satisfying −2.814+0.594×W | 03-05-2009 |
| 20090060432 | LIGHT TRANSMITTING BODY AND OPTICAL INTERCONNECTION SYSTEM - An optical transmission medium includes a GI optical fiber that is made of silica glass. The GI optical fiber includes a core having a graded-index refractive index profile and a cladding formed around the core. The GI optical fiber is bent by equal to or more than a quarter turn with a curvature radius equal to or larger than 4 mm and equal to or smaller than 10 mm. | 03-05-2009 |
| 20090052855 | OPTICAL FIBER AND WAVEGUIDE - A core region is doped with an impurity. A first cladding region is formed in a layered structure around the core region, including a microstructure. A second cladding region is formed in a layered structure around the first cladding region, including a homogeneous material. A relative refractive-index difference Δ1 between the core region and the second cladding region is equal to or more than 0.4% and equal to or less than 1.0%. | 02-26-2009 |
| 20090052854 | OPTICAL FIBER AND WAVEGUIDE - An optical fiber in which the macro-bending loss is lowered while an MFD is maintained large, and a waveguide including the optical fiber. The optical fiber includes a core region doped with an impurity; a first cladding region formed as a layer around the core region and including holes as microstructures; and a second cladding region formed as a layer around the first cladding region and made of a homogeneous material. A relative refractive-index difference Δ1 between the core region and the second cladding region is equal to or higher than 0.01% and lower than 0.3%. A total cross-sectional area of the holes in the first cladding region with respect to a total cross-sectional area of the core region, the first cladding region, and the second cladding region is equal to or smaller than 20%. A waveguide is formed using the optical fiber. | 02-26-2009 |
| 20090052853 | Holey fiber and method of manufacturing the same - A holey fiber includes a core region and a cladding region surrounding the core region and having air holes arranged around the core region. The cladding region includes an inner cladding layer surrounding the core region and an outer cladding layer surrounding the inner cladding layer. Furthermore, viscosities of the core region and the inner cladding layer are set lower than a viscosity of the outer cladding layer. | 02-26-2009 |
| 20090052848 | OPTICAL FIBER, OPTICAL FIBER RIBBON, AND OPTICAL INTERCONNECTION SYSTEM - An optical fiber has a refractive index profile approximated by n(r)=n1[1−2(Δ1/100)(r/a)̂α] | 02-26-2009 |
| 20090052828 | FIBER BRAGG GRATING ELEMENT - The present invention provides a fiber Bragg grating element which is simply configured and capable of obtaining a high cut-off amount exceeding 40 dB in a wide range. | 02-26-2009 |
| 20090046984 | OPTICAL TRANSMISSION SYSTEM AND DISPERSION-COMPENSATING OPTICAL FIBER - An optical transmission system employs an optical fiber as an optical transmission path that includes a holey fiber and a dispersion-compensating optical fiber. The holey fiber includes a core region that is formed at a center of the holey fiber and a cladding region having a plurality of holes around the core region at regular intervals. The dispersion-compensating optical fiber is connected close to the holey fiber and that collectively compensates wavelength dispersion of the holey fiber at an operation wavelength in at least two wavelength bands out of O band, E band, S band, C band, and L band within a predetermined range depending on a transmission rate. | 02-19-2009 |
| 20090044455 | POWER SUPPLY APPARATUS FOR SLIDING DOOR - A power supply apparatus for sliding door, comprising a body-side fixing unit fixed to a vehicle body, a door-side fixing unit fixed to a sliding door, and a flat cable having a connector on both ends thereof respectively, arranged to run from the vehicle body through the body-side fixing unit and the door-side fixing unit to the sliding door, wherein the flat cable is used in such a manner that a longitudinal direction in a cross sectional area in at least a bent portion of the flat cable is in accordance with a height direction of the vehicle body. | 02-19-2009 |
| 20090043002 | Thermoplastic Resin Foam - A thermoplastic resin sheet which has both a high reflectance ratio and excellent shape-holding property suitable for backlights and illumination boxes for use in illumination signboards, illumination fixtures and displays and illumination boxes. The thermoplastic resin foam is manufactured by a manufacturing method including a process for containing inert gas by holding thermoplastic resin sheet containing metallic oxide in a pressurized inert gas atmosphere and a process for heating the thermoplastic resin sheet in which the inert gas is contained at a temperature higher than the softening temperature of the thermoplastic resin, under normal pressure, and foaming the resin. | 02-12-2009 |
| 20090042493 | CHAMFERING APPARATUS FOR CHAMFERING GLASS SUBSTRATES - A chamfering apparatus is used to chamfer a peripheral edge of a glass substrate. The chamfering apparatus includes a grindstone having a cylindrical hollow end portion; a grindstone driving unit that rotates the grindstone around an axis of the cylindrical hollow end portion; a substrate rotation-driving unit that rotates the glass substrate around either one of an axis of the outer periphery and an axis of the center circular hole; and a pressing unit that presses the grindstone to the glass substrate such that an annular end surface of the grindstone contacts with an edge of either one of the outer periphery and the inner periphery of the glass substrate while the cylindrical hollow end portion of the grindstone faces with one of the outer periphery and the inner periphery of the glass substrate. | 02-12-2009 |
| 20090038743 | METHOD OF MANUFACTURING GLASS SUBSTRATE - A glass block is formed by stacking, fixing, and integrating a plurality of thin glass plates having a predetermined thickness. An annular glass block is formed by coring the glass block. Surfaces of an inside circumference and an outside circumference of the annular glass block are ground. The annular glass block of which the surfaces of the inside circumference and the outside circumference are ground are separated into individual annular glass substrates, and separated annular glass substrates are cleaned. Then, edge portions of the inside circumference and the outside circumference of a cleaned annular glass substrate are chamfered. | 02-12-2009 |
| 20090034926 | HOLEY FIBER AND METHOD OF MANUFACTURING THE SAME - A holey fiber has a core region, a cladding region surrounding the core region, air holes arranged around the core region, and a connection section extending from at least one end portion of the holey fiber. A refractive index of the core region in the connection section is higher than a refractive index of the cladding region without air holes in the connection section. | 02-05-2009 |
| 20090034922 | OPTICAL FIBER CABLE - It is an object of the present invention to provide an optical fiber cable which can reliably prevent increased transmission loss due to damage of the optical fiber as a result of the egg-laying behavior of cicadas. The cable includes at least an optical fiber | 02-05-2009 |
| 20090032984 | METHOD FOR MANUFACTURING AN OPTICAL FIBER WITH FILTER AND METHOD FOR BATCH MANUFACTURING OPTICAL FIBERS WITH FILTER - A method for manufacturing optical fibers with filter, wherein a multilayer-film filter is formed at end face of the optical fibers, comprising a process for fixing each of the optical fibers on a fixing jig, a process for polishing the end face of the optical fiber fixed on said fixing jig, a process for film-forming a filter on the end face of the optical fibers after polishing, and a process for taking out said optical fibers from said fixing jigs, respectively, wherein said process for film-forming the filter is performed by forming a fiber bundle in which a plural number of optical fibers after polishing, on which the filter has been film-formed, are tied such that all polished planes are aligned at the end face. | 02-05-2009 |
| 20090032731 | PHOTODETECTOR AND MEASUREMENT OBJECT READER - Provided is a photodetector | 02-05-2009 |
| 20090030626 | REMAINING ELECTRICAL CHARGE/REMAINING CAPACITY ESTIMATING METHOD, BATTERY STATE SENSOR AND BATTERY POWER SOURCE SYSTEM - The present invention provides a battery remaining electrical charge/remaining capacity estimating method which makes it possible to obtain a convergence value of a battery open circuit voltage with high accuracy and in a short time. | 01-29-2009 |
| 20090028509 | OPTICAL FIBER DEVICE - An optical fiber device converts an input optical pulse having a predetermined center wavelength into an optical pulse having a wavelength bandwidth broader than that of the input optical pulse. The optical fiber device includes a plurality of optical fibers connected in a cascaded manner each having negative wavelength dispersion at the center wavelength. The optical fibers have different relative refractive index differences between a core region and a cladding region from each other. The optical fibers are connected such that wavelength dispersions of adjacent optical fibers at the center wavelength are different from each other. | 01-29-2009 |
| 20090027007 | METHOD AND DEVICE FOR DETERMINING BATTERY DISCHARGE CAPABILITY, AND POWER SUPPLY SYSTEM - Regarding a method for determining battery discharge capability of the present invention, the optimum state vector X is estimated by extended Kalman filter operation. Using the estimated state vector X, element parameters of an equivalent circuit are renewed to the optimum (step S | 01-29-2009 |
| 20090022461 | OPTICAL FIBER - An optical fiber which reduces transmission loss increase even in a high humidity environment or under water is provided. To solve the above issue, an optical fiber according to the present invention comprises a glass optical fiber coated with at least two coating layers, soft and hard layers. The optical fiber is further coated by a colored resin to make a colored optical fiber. The hard layer and the color layer of the colored optical fiber have a free volume radius of at least 0.290 nm according to positron annihilation lifetime spectroscopy. | 01-22-2009 |
| 20090021722 | Specimen optical information recognizing device and its recognizing method - A specimen optical information recognizing device comprises a specimen containing section ( | 01-22-2009 |
| 20090017561 | Labelled silica nanoparticles for immunochromatographic reagent, immunochromatographic reagent, immunochromatographic test strip using the same, and immunochromatographic fluorescence-detecting system or radiation-detecting system - Labelled silica nanoparticles for immunochromatographic reagent, comprising silica nanoparticles containing a labelled substance. | 01-15-2009 |
| 20090016669 | OPTICAL COMPRESSOR AND ULTRA-SHORT PULSE LIGHT SOURCE - Provided is an ultra-short pulse light source having an optical pulse generator | 01-15-2009 |
| 20090015976 | POWER FEED SYSTEM FOR VEHICLE - A power feed system for a vehicle provided with a plurality of nodes ( | 01-15-2009 |
| 20090010298 | TWO-DIMENSIONAL PHOTONIC CRYSTAL SURFACE-EMITTING LASER - A two-dimensional photonic crystal formed by arranging in a lattice pattern a medium having a refractive index different from that of a medium layer formed near an active layer. The two-dimensional photonic crystal includes a distributed-feedback control photonic crystal in which a light propagating through the active layer as a core is subjected to a two-dimensional distributed feedback within a plane of the active layer, and the light is not radiated in a direction normal to the plane of the active layer, and a surface-emission control photonic crystal in which the light is radiated in the direction normal to the plane of the active layer, which are superimposed with each other. | 01-08-2009 |
| 20090008991 | POWER SUPPLY APPARATUS FOR SLIDING DOOR - The power supply apparatus for sliding door | 01-08-2009 |
| 20090003786 | OPTICAL FIBER MODULE AND OPTICAL DEVICE - An optical fiber module includes an optical fiber that transmits a light and a holding unit that holds the optical fiber in a state in which the optical fiber is stretched in its longitudinal direction to change optical characteristics of the optical fiber. | 01-01-2009 |
| 20090003394 | OPTICAL PULSE AMPLIFIER AND OPTICAL PULSE SOURCE - The pulse light source according to the present invention comprises: a seed pulse generator | 01-01-2009 |
| 20090001501 | Fiber Soi Substrate, Semiconductor Device Using Same and Method for Manufacturing Same - The present invention provides a SOI substrate that can realize a composite device formed of a MOS integrated circuit and a passive device and can reduce a size and a manufacturing cost of a semiconductor device. | 01-01-2009 |
| 20080317418 | NONLINEAR OPTICAL FIBER, NONLINEAR OPTICAL DEVICE, AND OPTICAL SIGNAL PROCESSING APPARATUS - A core includes a center core region, a core layer that is formed around the center core region and that has a refractive index lower than that of the center core layer, and at least one buffer core layer that is formed between the center core region and the core layer and that has a refractive index lower than that of the center core region and higher than that of the core layer. A cladding is formed around the core layer and that has a refractive index lower than that of the center core region and higher than that of the core layer. An effective core area at a wavelength of 1550 nm is equal to or smaller than 18 μm | 12-25-2008 |
| 20080314612 | Conductor of electric cable for wiring, electric cable for wiring, and methods of producing them - A conductor of an electric cable for wiring, containing a copper alloy material containing 1.0 to 4.5 mass % of Ni, 0.2 to 1.1 mass % of Si, and the balance of Cu and unavoidable impurities, in which the copper alloy material has an average grain diameter of 0.2 to 5.0 μm. | 12-25-2008 |
| 20080310807 | OPTICAL FIBER AND OPTICAL-FIBER TRANSMISSION LINE - An optical fiber transmits at least a signal light having a wavelength of 1550 nanometers in a fundamental propagation mode. The optical fiber has a cutoff wavelength equal to or longer than a wavelength of 1550 nanometers, a wavelength dispersion in the fundamental propagation mode at the wavelength of 1550 nanometers larger than 0 ps/nm/km, and a dispersion slope in the fundamental propagation mode at the wavelength of the signal light equal to or smaller than −0.05 ps/nm | 12-18-2008 |
| 20080310806 | HOLEY FIBER AND METHOD OF MANUFACTURING THE SAME - A method of manufacturing a holey fiber includes forming a preform and drawing the preform. The forming includes arranging a core rod at a center of a jacket tube and arranging capillary tubes having hollows around the core rod inside the jacket tube. The drawing includes heat melting the preform in a heating furnace while controlling at least one of a gas pressure to be applied to insides of the hollows of the capillary tubes, a temperature of the heating furnace, and a drawing speed, based on a structure of air holes to be formed in a first layer from the core region. | 12-18-2008 |
| 20080308140 | Thermo-Electric Cooling Device - A thermo-electric cooling device includes at least one-layer resin substrate having electric connection regions existing with a predetermined pattern, thermo-electric semiconductor elements including a plurality of p-type thermo-electric semiconductor elements and n-type thermo-electric semiconductor elements arranged so as to correspond to the electric connection regions, and an electric circuit metal layer where the thermo-electric semiconductor elements are electrically connected in series via a junction layer in the electric connection regions. The electric connection regions are, for example, through holes, openings, or the like. The plurality of thermo-electric semiconductor elements are a plurality of pairs of p-type thermo-electric semiconductor elements and n-type thermo-electric conductive elements. | 12-18-2008 |
| 20080304560 | RANGING AND COMMUNICATION MULTIFUNCTION SYSTEM - A ranging and communication multifunction system processable by integrating a ranging function and a communication function is provided. | 12-11-2008 |
| 20080300334 | Thermoplastic Resin Foam - A thermoplastic resin foam which has both high reflectance and superior shape-retention properties, suitable for use in backlights and illumination boxes for illumination signboards, lighting fixtures, displays and the like. The thermoplastic resin foam is manufactured by a manufacturing method including a procedure for holding a resin sheet composed of thermoplastic resin (A) and thermoplastic resin (B), which has a functional group having an affinyty with thermoplastic resin (A), within a pressurized inert gas atmosphere to enable the resin sheet to contain inert gas, and a procedure for foaming by heating the resin sheet containing inert gas at a temperature higher than the softening temperature of thermoplastic resin, under normal pressure. | 12-04-2008 |
| 20080298998 | COPPER ALLOY FOR ELECTRIC AND ELECTRONIC EQUIPMENTS - A copper alloy for electric and electronic equipments, containing from 0.5 to 4.0 mass % of Ni, from 0.5 to 2.0 mass % of Co, and from 0.3 to 1.5 mass % of Si, with the balance of copper and inevitable impurities,
| 12-04-2008 |
| 20080298759 | OPTICAL FIBER AND OPTICAL WAVEGUIDE - An optical fiber includes a core region having a first refractive index and a cladding region having a second refractive index lower than the first refractive index on an outer circumference of the core region. The cladding region includes four holes formed to have a four-fold rotational symmetry with respect to a center axis around the core region in a longitudinal direction, such that a zero-dispersion wavelength is 900 nm to 1150 nm and a cutoff wavelength is equal to or shorter than 950 nm. | 12-04-2008 |
| 20080293584 | Fluorescent silica nano-particle, fluorescent nano-material, and biochip and assay using the same - Colloidal silica particles containing a fluorescent dye compound, composed of a silica particle containing a silica component and a fluorescent dye compound chemically bound or adsorbed thereto, | 11-27-2008 |
| 20080292257 | Optical fiber and optical transmission line and optical communication system including such optical fiber - Optical fibers to form an optical transmission line suitable for WDM transmission in a wide-spreading wavelength band, having the following characteristics and parameters: a dispersion in absolute value of 0.5 ps/nm/km to 9 ps/nm/km in a wavelength band of 1430 nm to 1625 nm, a dispersion slope in absolute value of 0.04 ps/nm | 11-27-2008 |
| 20080292251 | POLARIZATION-MAINTAINING OPTICAL FIBER, METHOD OF MANUFACTURING POLARIZATION-MAINTAINING OPTICAL-FIBER CONNECTING PORTION, AND POLARIZATION-MAINTAINING OPTICAL-FIBER CONNECTING PORTION - A polarization-maintaining optical fiber includes a core region and a cladding region formed around the core region. The cladding region has a refractive index lower than a refractive index of the core region. A refractive index profile of the core region is either one of a step shaped or a concave shaped. The cladding region includes two holes formed in such a manner that a shortest distance from the core region is virtually zero at locations in opposite to each other across the core region. | 11-27-2008 |
| 20080292243 | Optical Power Supply Type Sensing System - An optical power supply type sensing system includes: an optical directivity coupler ( | 11-27-2008 |
| 20080285929 | OPTICAL FIBER - A tension-absorbing cladding layer is formed around a cladding layer, with a refractive index equal to that of a center core region or higher. The center core region has a relative refractive index difference of −0.1% to 0% with respect to a pure silica glass, a chlorine concentration of wt % to 0.10 wt %, and a fluorine concentration of 0.10 wt % to 0.30 wt %. The tension-absorbing cladding layer has a relative refractive index difference of 0% to 0.05% with respect to the pure silica glass and a chlorine concentration of 0.15 wt % or lower. A ratio of an outer diameter of the tension-absorbing cladding layer to an outer diameter of the cladding layer is 1.10 to 1.40. | 11-20-2008 |
| 20080285164 | Light Reflecting Board - A technology for preventing cracks from occurring in a light reflector plate fabricated by forming a synthetic resin reflector plate into a three-dimensional shape and effectively preventing deformation of this light reflector plate is provided. | 11-20-2008 |
| 20080279511 | Optical Connector Kit - An optical connector kit as described below is provided. An inserting operation of an optical fiber to be inserted into a plurality of connector parts is facilitated. All connector parts constituting an optical connector are accommodated, including a ferrule. To the ferrule, an optical fiber having a predetermined length is attached and has been subjected to end face polishing processing. | 11-13-2008 |
| 20080273850 | OPTICAL FIBER AND OPTICAL-FIBER TRANSMISSION LINE - An optical fiber that transmits a signal light in a fundamental propagation mode has a cutoff wavelength longer than a wavelength of the signal light, a wavelength dispersion of the fundamental propagation mode of −5 ps/nm/km to −1 ps/nm/km at a wavelength of 1550 nanometers, an effective core area of the fundamental propagation mode larger than 45 μm | 11-06-2008 |
| 20080273832 | PHOTONIC CRYSTAL OPTICAL DEVICE - An active area includes a photonic-crystal optical waveguide formed by periodically arranging a plurality of holes in a primary plane direction of an active-area core layer in an active-area growth portion. A passive area includes a passive optical waveguide formed in a passive-area growth portion. An effective refractive index of a growth structure of the active-area growth portion is larger than an effective refractive index of a growth structure of the passive-area growth portion, and an active layer has a gain at a zero group-velocity point positioned on a high-frequency side of a dispersion curve of the photonic-crystal optical waveguide. | 11-06-2008 |
| 20080273569 | SURFACE-EMITTING LASER DEVICE - A VCSEL device includes a polyimide having a larger thickness (d | 11-06-2008 |
| 20080272850 | Lock Detector and Optical Phase Locked-Loop System - A lock detection apparatus detecting lock of an optical phase-locked loop apparatus including a first phase detector comparing phases of an input light signal and a beat light signal to output a first phase comparison signal, a loop filter forming the first phase comparison signal, and an optical voltage controlled oscillator outputting the beat light signal based on the formed first phase comparison signal. The lock detection apparatus includes: a phase shifter shifting the phase of the beat light signal; and a second phase detector comparing the phases of the input light signal and the phase-shifted beat light signal to output a second phase comparison signal, wherein the phase shifter shifts a quantity of the phase so that the phase comparison signal may not be 0 when the phases of the two light signals compared by the second phase detector synchronize with each other to the beat light signal. | 11-06-2008 |
| 20080267240 | OPTICAL SEMICONDUCTOR MODULE - An optical semiconductor module including a base having installed on an optical fiber and an optical semiconductor element, and a package which houses the base on a bottom thereof and has a first side wall with an optical section through which the optical fiber is led and a second side wall facing the first side wall, where the base is cut off to form a curved surface with respect to the bottom at a lower corner on a side of the base facing the second side wall of the housing, and a ratio of r/t is from 0.4 to 1.0, where t is a thickness of the base, and r is a curvature radius of the curved surface. | 10-30-2008 |
| 20080260019 | BURST OSCILLATION DEVICE, BURST OSCILLATION METHOD, AND RANGING/COMMUNICATION SYSTEM - The burst oscillation device 20 includes the data generation part | 10-23-2008 |
| 20080257072 | Methods of Separating, Identifying and Dispensing Specimen and Device Therefor, and Analyzing Device Method - [PROBLEMS] A (a) (b) separation unit can confirms a separation state, a detection unit enhances a lighting efficiency and a light reception sensitivity, and a dispensing unit ensures the normal state of a specimen. [MEANS FOR SOLVING PROBLEMS] A specimen separation device characterized by comprising a container for storing a specimen, a nozzle for sucking and ejecting the specimen from the container, a nozzle operating means for moving the nozzle vertically and laterally, and a nozzle controlling means for controlling the suction force and ejection force of the nozzle. A specimen identification device comprising a nozzle for sucking a specimen from a container storing the specimen, a flow path for allowing the specimen to flow therethrough, and a measuring unit having a monitoring light lighting unit and a light receiving unit for observing (monitoring) the specimen that are installed in a flow path, characterized in that the above nozzle, the flow path and the measuring unit are formed in an integrated structure. | 10-23-2008 |
| 20080254566 | SURFACE-EMISSION SEMICONDUCTOR LASER DEVICE - A surface-emitting semiconductor laser device includes a semi-insulating substrate, a layer structure with a bottom multilayer reflector, an n-type cladding layer, an active layer structure for emitting laser, a p-type cladding layer and a top multilayer reflector with a dielectric material, consecutively formed on the semi-insulating substrate, the active layer structure, the p-type cladding layer and the top multilayer reflector, configuring a mesa post formed on a portion of the n-type cladding layer, the p-type cladding layer or the p-type multilayer reflector. The surface-emitting semiconductor laser includes a p-side electrode formed on another portion of the p-type cladding layer, and an n-side electrode formed on another portion of the n-type cladding layer. The n-side electrode includes a substantially uniform Au film and AuGeNi film or AuGe film consecutively formed on the n-type cladding layer, and an alloy is formed between said Au film and said AuGeNi film or AuGe film. | 10-16-2008 |
| 20080253716 | ARRAYED WAVEGUIDE GRATING OPTICAL MULTIPLEXER/DEMULTIPLEXER - An arrayed waveguide grating optical multiplexer/demultiplexer | 10-16-2008 |
| 20080243405 | METHOD AND DEVICE FOR ESTIMATING BATTERY RESIDUAL CAPACITY, AND BATTERY POWER SUPPLY SYSTEM - In the method for estimating battery residual capacity of the present invention, the voltage measurement values are obtained (step S | 10-02-2008 |
| 20080240727 | TUNABLE DISPERSION COMPENSATOR - The tunable dispersion compensator | 10-02-2008 |
| 20080240645 | OPTICAL INTEGRATED CIRCUIT AND OPTICAL INTEGRATED CIRCUIT MODULE - An optical integrated circuit | 10-02-2008 |
| 20080240192 | SURFACE EMITTING LASER ELEMENT AND METHOD OF FABRICATING THE SAME - A surface emitting laser element includes an active layer and a dielectric multilayer mirror formed with a plurality of dielectric layers having different refractive indices for reflecting a light generated in the active layer. At least one of boundaries between the dielectric layers is formed to have a predetermined surface roughness to obtain a desired target reflectance of the dielectric multilayer mirror. | 10-02-2008 |
| 20080239465 | DELAY-LINE DEMODULATOR AND METHOD OF ADJUSTING A PHASE SHIFT IN THE DEMODULATOR - In a method of phase adjustment for the demodulator | 10-02-2008 |
| 20080232750 | OPTICAL FIBER RIBBON - An optical fiber ribbon includes a plurality of optical fibers, each includes a glass optical fiber coated with a fiber coating, that are arranged in parallel, and a ribbon coating that coats the optical fibers arranged in parallel. The optical fiber ribbon has a thickness equal to 300 μm or less. The fiber coating is made of a non-flame-resistant ultraviolet curable resin. The ribbon coating has a thickness equal to 40 μm or more and is made of a flame resistant resin. | 09-25-2008 |
| 20080226246 | OPTICAL FIBER AND OPTICAL-FIBER TRANSMISSION LINE - An optical fiber transmits at least a signal light having a wavelength of 1550 nanometers in a fundamental propagation mode. The optical fiber has, a cutoff wavelength equal to or longer than 1550 nanometers, a wavelength dispersion of 4 ps/nm/km to 7 ps/nm/km in the fundamental propagation mode at the wavelength of 1550 nanometers, a dispersion slope of a positive value equal to or smaller than 0.03 ps/nm | 09-18-2008 |
| 20080226241 | OPTICAL FIBER AND OPTICAL FIBER RIBBON, AND OPTICAL INTERCONNECTION SYSTEM - An optical fiber, made of silica-based glass, comprising a core and a cladding. The optical fiber having a mode field diameter of 6.5 μm or larger at a wavelength of 1300 nm, transmitting light with a wavelength of 1250 nm in a single mode, and having a bending loss of 1 dB/turn or smaller at a wavelength of 1300 nm when the optical fiber is bent with a curvature radius of 1.5 mm. | 09-18-2008 |
| 20080225276 | SYSTEM FOR MEASURING THE WAVELENGTH DISPERSION AND NONLINEAR COEFFICIENT OF AN OPTICAL FIBER - A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light of the probe light or idler light generated within the optical fiber is measured. Next, the instantaneous frequency of the measured power oscillation is obtained, and the dependency of the instantaneous frequency relative to the power oscillation of the pump light in a longitudinal direction of the optical fiber is obtained. Thereafter, a rate of change in the longitudinal direction between phase-mismatching conditions and nonlinear coefficient of the optical fiber is obtained from the dependency of the instantaneous frequency. And based on the rate of change, the longitudinal wavelength-dispersion distribution and longitudinal nonlinear-coefficient distribution of the optical fiber are simultaneously specified. | 09-18-2008 |
| 20080219667 | OPTICAL COMMUNICATION SYSTEM AND DISPERSION-COMPENSATING OPTICAL FIBER - With this scheme, there is provided an optical communication system and a dispersion-compensating optical fiber with which a long-haul optical signal transmission is possible by making use of the low optical nonlinearity and the low transmission loss characteristic of the photonic bandgap optical fiber. | 09-11-2008 |
| 20080216516 | METHOD OF MANUFACTURING OPTICAL FIBER - A coating is applied on an optical fiber drawn from a melted tip of an optical-fiber preform. A glass spin is applied to a coated optical fiber by gripping the coated optical fiber with at least a pair of spinning applying rollers arranged in different levels with parallel rotation axes, rotating the spinning applying rollers so that the coated optical fiber is guided in a predetermined direction, and alternately shifting the spinning applying rollers in opposite directions along the rotation axes. The glass spin is applied to the coated optical fiber in a state in which each of the rotation axes is tilted at a predetermined angle from a plane perpendicular to the first direction. | 09-11-2008 |
| 20080212925 | FIBER BRAGG GRATING AND MANUFACTURING METHOD THEREFOR - The present invention provides an optical fiber for a fiber Bragg grating having a high reliability and superior performance. An optical fiber according to the present invention has a glass film containing micro porous bodies formed on the circumference of the optical fiber having a photosensitive core or both of the photosensitive core and a cladding. | 09-04-2008 |
| 20080212633 | SURFACE EMITTING LASER DEVICE - An optical resonator including a lower multilayer reflector and an upper multilayer reflector is arranged on a substrate. A strained active layer having a multiple quantum well structure formed with a quantum well layer and a barrier layer is arranged in the resonator. A current confinement layer including a selectively oxidized portion is arranged on an upper side of the strained active layer. The current confinement layer is arranged at a position where a strain in the selectively oxidized portion influences the strained active layer. | 09-04-2008 |
| 20080212163 | Image Display Element, Image Display Sheet, Image Display and Image Displaying Method - An image display element comprises a multilayer film optical filter in which layers of two or more types of materials which reflect or transmit therethrough light of a specific color and have different refractive indexs are alternately superimposed or stacked. The multilayer film optical filter is shaped like a fine particle. The multilayer film optical filter is, for example, a non-light-absorbing interference type color filter which reflects light having a predetermined color and transmits a complementary color of the predetermined color therethrough. Further, multilayer film optical filter is a dielectric multilayer film, a transparent resin multilayer film or a glass multilayer film. | 09-04-2008 |
| 20080205463 | METHOD OF MANUFACTURING VERTICAL-CAVITY SURFACE-EMITTING LASER DEVICE AND VERTICAL-CAVITY SURFACE-EMITTING LASER DEVICE - A selective oxidation layer is formed by alternately growing an AlAs layer and an XAs layer containing a group III element X with a thickness ratio in a range between 97:3 and 99:1 on a plurality of semiconductor layers including an active layer. The selective oxidation layer is selectively oxidized to manufacture a vertical-cavity surface-emitting laser. | 08-28-2008 |
| 20080205460 | OPTICAL AMPLIFYING APPARATUS - The present invention provides an optical amplifying apparatus having: a CPU | 08-28-2008 |
| 20080204031 | METHOD AND APPARATUS FOR DETERMINING DETERIORATION OF SECONDARY BATTERY, AND POWER SUPPLY SYSTEM THEREWITH - A method for detecting SOC and SOH of a storage battery includes: calculating an SOC value of the storage battery with use of an SOC calculation unit based on a measured voltage value or a measured current value of the storage battery and calculating an SOH value of the storage battery with use of an SOH calculation unit based on the SOC value; further calculating a new SOC value with use of the SOC calculation unit based on the SOH value and calculating a new SOH value with use of the SOH calculation unit based on the new SOC value, these further calculations of SOC value and SOH value being repeated a prescribed n times of at least one so as to obtain an nth calculated SOC value and an nth calculated SOH value; outputting the nth calculated SOH value as an SOH output value and outputting the nth calculated SOH value as an SOC output value; and storing the SOH output value into a memory. | 08-28-2008 |
| 20080202166 | METHOD OF DEHYDRATING AND SINTERING POROUS PREFORM FOR OPTICAL FIBER AND DEHYDRATION-SINTERING FURNACE - A dehydration-sintering furnace includes a muffle tube that accommodates therein the porous preform, a heater that heats the porous preform from outside of the muffle tube, a furnace body that accommodates the heater at an outer periphery of the muffle tube. When a gas required for dehydrating and sintering the porous preform is supplied in the muffle tube, and a pressure in the muffle tube is measured, an average value of the pressure in the muffle tube P | 08-28-2008 |
