Patent application number | Description | Published |
20080247714 | Optical fiber/glass tube fusion-spliced structure, optical fiber assembly including the structure and glass tube used in the structure - An optical fiber/glass tube fusion spliced structure includes an optical fiber made of glass and a glass tube through which the optical fiber is inserted and at least in part of the optical fiber/glass tube fusion spliced structure, an outer circumference portion of the optical fiber and an inner circumference portion of the glass tube are fusion spliced. Part of the fusion spliced portion located in one of the optical fiber and the glass tube is formed of a material having a lower fusion point than a fusion point of part of the fusion spliced portion located in the other. | 10-09-2008 |
20090042002 | Heat Treatment Method of ZnTe Single Crystal Substrate and ZnTe Single Crystal Substrate - The present invention is to provide a heat treatment method for effectively eliminating Te deposits in a ZnTe single crystal substrate, and a ZnTe single crystal substrate having an optical characteristic suitable for use of a light modulation element and having a thickness of 1 mm or more. A heat treatment method of a ZnTe single crystal substrate, includes: a first step of increasing a temperature the ZnTe single crystal substrate to a first heat treatment temperature T | 02-12-2009 |
20090043423 | Information processing system, method of processing information, and program for processing information - An information processing system, method, program and robot is provided. The system includes analysis means for analyzing a message and determining the most effective direction for transmitting the message. The analysis means also analyzes received messages and determines the most effective direction for receiving the message. Motion control means turn toward the most effective direction for transmitting a message or receiving a message. The system includes information reproducing means for reproducing the message and a sensor for receiving a message. | 02-12-2009 |
20090082910 | INFORMATION PROCESSING APPARATUS - An information processing apparatus is provided that has a processor for performing an information processing, a power supply unit for receiving an external electric power from an external electric power source and for supplying the external electric power to the processor, a first power receiving unit connected to a first communication medium, the first power receiving unit receiving a first electric power from the first communication medium and supplying the first electric power to the processor, a second power receiving unit connected to a second communication medium, the second power receiving unit receiving a second electric power from the second communication medium and supplying the second electric power to the processor, an electric power detection unit for detecting the first electric power or the second electric power, and a switching unit for supplying one of the external electric power, the first electric power, and the second electric power to the processor according to a result of detection made by the electric power detection unit. | 03-26-2009 |
20090122817 | VARIABLE-WAVELENGTH FILTER AND VARIABLE-WAVELENGTH LASER - Only the light at an overlapping wavelength of the transmission characteristics of at least two wavelength selecting filters is looped, and at least one of the wavelength selecting filters varies a selected wavelength. Since a loss due to the optical filters is small and there is not a loss caused by a highly reflecting film, the output of an external-resonator variable-wavelength laser can be increased. Optical circuit component ( | 05-14-2009 |
20090141747 | EXTERNAL CAVITY WAVELENGTH TUNABLE LASER DEVICE AND OPTICAL OUTPUT MODULE - In an external cavity wavelength tunable laser device including an external cavity ( | 06-04-2009 |
20090257460 | EXTERNAL RESONATOR VARIABLE WAVELENGTH LASER AND ITS PACKAGING METHOD - The reflectance of a semiconductor optical amplifier ( | 10-15-2009 |
20090268762 | Optical intergrated device - An object of the invention is to provide an optical integrated device which enables to supply a wide range of variable wavelength and to reduce the coupling loss. The optical integrated circuit chip ( | 10-29-2009 |
20090274187 | Semiconductor Laser, Module and Optical Transmitter - A semiconductor optical waveguide-A having an optical amplification function and a semiconductor optical waveguide-B having a light control function are integrated together on the same substrate. A facet of the semiconductor optical waveguide-A facing an isolation trench and a facet of the semiconductor optical waveguide-B facing the isolation trench are configured as a composite optical reflector/optical connector using an optical interference. The facet of the semiconductor optical waveguide-A achieves an optical reflectivity not higher than the reflectivity corresponding to a cleaved facet and not smaller than several percent, and an optical coupling coefficient of not lower than 50% between the semiconductor optical waveguide-A and the semiconductor optical waveguide-B. | 11-05-2009 |
20100111119 | EXTERNAL RESONATOR TYPE WAVELENGTH VARIABLE SEMICONDUCTOR LASER - In an external resonator type semiconductor wavelength tunable laser apparatus using a wavelength tunable mirror or a wavelength tunable filter which uses a refractive index change of liquid crystal, a resonant frequency is set as FR, when a response of the refractive index change to a drive voltage frequency of liquid crystal becomes maximum. A frequency F | 05-06-2010 |
20100246618 | EXTERNAL RESONATOR-TYPE WAVELENGTH TUNABLE LASER DEVICE - The present invention provides an external resonator-type wavelength tunable laser device that can properly fulfill a wavelength tuning function even with the use of a planar wavelength tunable reflector involving a considerable level of residual reflection. The external resonator-type wavelength tunable laser device includes a planar reflection structure enabling a reflection spectral peak wavelength to be varied and a semiconductor element as a semiconductor gain medium. The semiconductor gain medium is composed of a multiple quantum well in which product Γ·L of optical confinement constant Γ and semiconductor gain medium length L (μm) of a gain layer is at least 25 μm and at most 40 μm and in which gain peak wavelength λ0 (nm) observed during carrier injected with a maximum modal gain equal to an internal loss of the semiconductor gain medium is larger than −3·ΔR/2+(λc+35) and smaller than (−(Γ·L)/7+8)·ΔR+(−(Γ·L)+λc+45). Here, ΔR (dB) denotes a reflectance difference, and he (nm) denotes a wavelength at a center of an operating wavelength range of the wavelength tunable laser device. | 09-30-2010 |
20100266887 | BATTERY PACK - A battery pack is provided, in which external connection terminals are arrayed in the same direction in the module having the plurality of cells connected in series and a wiring that cuts across the module is not generated, and, in which improvement of the workability and reduction of connection failures are achieved by only connecting between the units by means of a bus bar when creating the module. Three pieces of flat-plate cells | 10-21-2010 |
20100285677 | POWER SUPPLY CONNECTOR - A power supply connector is provided, which is applicable to both large current charging and low current charging, the power supply connector being able to not only maintain the accuracy of monitoring low current charging and the volumetric efficiency of a board by appropriately arranging two types of connector parts, but also contribute to the downsizing of the power supply connector and improvement of the reliability thereof by striking a balance between the volumetric efficiency and the heat radiation characteristics, and ensure safety in the use of the power supply connector while reducing the cost. Insertion holes | 11-11-2010 |
20100310212 | OPTICAL CONNECTOR STRUCTURE - An optical connector structure (C) includes: an optical fiber ( | 12-09-2010 |
20110002349 | WAVELENGTH-TUNABLE LASER APPARATUS AND WAVELENGTH CHANGING METHOD THEREOF - An object is to provide a wavelength-tunable laser apparatus that prevents a grid-hopping upon wavelength change, and a wavelength changing method thereof. A wavelength-tunable laser apparatus | 01-06-2011 |
20110085240 | OPTICAL MODULE HAVING THREE OR MORE OPTICALLY TRANSPARENT LAYERS - A light dispersion filter is composed of three or more optically transparent layers each having a value equal to the value of the product of the refractive index and thickness of the optically transparent layer and transmitted light, and a plurality of partially reflective layers arranged alternately with the optically transparent layers and having predetermined reflectivities. Alternatively, a light dispersion filter has a plurality of etalon resonators which are arranged in series such that the value of the product of the refractive index of air and the interval of the etalon resonators is equal to the value of the product of the refractive index and thickness of the optically transparent layers. | 04-14-2011 |
20110188804 | OPTICAL JOINT - An optical joint ( | 08-04-2011 |
20110236297 | HEAT TREATMENT METHOD OF ZNTE SINGLE CRYSTAL SUBSTRATE AND ZNTE SINGLE CRYSTAL SUBSTRATE - The present invention is to provide a heat treatment method for effectively eliminating Te deposits in a ZnTe single crystal substrate, and a ZnTe single crystal substrate having an optical characteristic suitable for use of a light modulation element and having a thickness of 1 mm or more. A heat treatment method of a ZnTe single crystal substrate, includes: a first step of increasing a temperature the ZnTe single crystal substrate to a first heat treatment temperature T | 09-29-2011 |
20110249690 | EXTERNAL CAVITY WAVELENGTH TUNABLE LASER DEVICE AND OPTICAL OUTPUT MODULE - In an external cavity wavelength tunable laser device including an external cavity ( | 10-13-2011 |
20110317956 | SEMICONDUCTOR OPTICAL MODULATOR, SEMICONDUCTOR OPTICAL INTEGRATED DEVICE, AND METHOD OF MANUFACTURING THE SAME - The invention provides a semiconductor optical modulator including a two-step mesa optical waveguide having a first clad layer ( | 12-29-2011 |
20120097287 | DUCT ARRANGEMENT, DUCT EQUIPMENT, DUCT REINFORCEMENT CONSTRUCTION METHOD, SUPPORT REINFORCEMENT STRUCTURE, AND REINFORCEMENT STRUCTURE FOR SUPPORT FIXING UNIT - Provided is duct equipment including a duct body, a heat insulating material, a external cover, a fiber-reinforced sheet, and fiber-reinforced moldings. The duct body includes a duct wall, a duct passage defined by the duct wall, and duct corners formed in the duct wall when viewed in a cross-section in a direction intersecting a direction in which the duct passage extends. The heat insulating material is installed on an outer circumference of the duct body. The external cover includes a external cover wall installed on an outer circumference of the heat insulating material, and external cover corners formed alone the duct corners. The fiber-reinforced sheet is disposed on the outer circumference of the duct body via an adhesive layer. The fiber-reinforced moldings are disposed adjacent to the fiber-reinforced sheet along the external cover corners via adhesive layers, and have a substantially L-shape when viewed in the cross-section. | 04-26-2012 |
20120125006 | GAS TURBINE COMBUSTOR AND GAS TURBINE - In a gas turbine combustor and a gas turbine, an air passage ( | 05-24-2012 |
20120148151 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM - An image processing apparatus, comprising: a detecting unit that detects a foreground area including a foreground object, a background area, and a boundary area between the foreground area and the background area, from data of a processing target image; and a display control unit that executes a control to display the boundary area in a first color distinguishable from other areas and the background area in a second color different from the first color when the processing target image is displayed. | 06-14-2012 |
20120167569 | GAS TURBINE COMBUSTION BURNER - Provided is a gas turbine combustion burner capable of uniformly ejecting fuel from ejection holes for reduced NO | 07-05-2012 |
20120183249 | SEMICONDUCTOR OPTICAL MODULATOR AND SEMICONDUCTOR MACH-ZEHNDER OPTICAL MODULATOR - Provided are a semiconductor optical modulator and a semiconductor Mach-Zehnder optical modulator of high efficiency and high reliability. | 07-19-2012 |
20120219024 | WAVELENGTH TUNABLE LASER DEVICE, OPTICAL MODULE, AND METHOD OF CONTROLLING WAVELENGTH TUNABLE LASER - Provided is a power saving and highly reliable wavelength tunable laser device. | 08-30-2012 |
20120224856 | OPTICAL MODULATION DEVICE AND OPTICAL MODULATION METHOD - The present invention has an object to provide an optical modulation device and an optical modulation method that achieve an excellent spectral efficiency with a simple and compact configuration and low power consumption. An optical modulation device according to an exemplary aspect of the present invention includes a CW light source ( | 09-06-2012 |
20130008167 | GAS TURBINE COMBUSTOR - A gas turbine combustor is provided with a combustor basket where combustion gas flows, the combustion gas being produced by combustion of fuel injected from a nozzle, and a first resonance device and a second resonance device mounted on an outer surface of the combustor basket. The second resonance device is disposed on a downstream side from the first resonance device in a flow of the combustion gas and damps combustion oscillation of a frequency higher than the first resonance device. The first and second resonance devices are acoustic liners each having a housing mounted to the outer surface of the combustor basket. A resonance space surrounded by the housing and the outer surface of the combustor basket communicates with an interior space of the combustor basket via a plurality of acoustic holes formed in the combustor basket. | 01-10-2013 |
20130063806 | OPTICAL ANALOG-TO-DIGITAL CONVERTER, METHOD OF CONSTRUCTING THE SAME, OPTICAL SIGNAL DEMODULATOR, AND OPTICAL MODULATOR-DEMODULATOR - An optical A/D converter according to the present invention includes an optical splitter that splits an analog input signal light into plurals, a plurality of Mach-Zehnder interferometers to which each of the signal lights split by the optical splitter is input, and plurality of optical/electrical conversion unit that convert each signal lights output from each Mach-Zehnder interferometer into a digital electrical signal, in which each Mach-Zehnder interferometer includes optical intensity-to-phase conversion unit that optically convert intensity of the input signal light into an amount of phase shift and the amount of phase shift differs for each Mach-Zehnder interferometer. Then, it is possible to provide a high speed and low power consuming optical demodulation circuit. | 03-14-2013 |
20130113641 | OPTICAL INTENSITY-TO-PHASE CONVERTER, MACH-ZEHNDER INTERFEROMETER, OPTICAL A/D CONVERTER, AND METHOD OF CONSTRUCTING OPTICAL INTENSITY-TO-PHASE CONVERTER - An optical intensity-to-phase converter according to the present invention includes first and second waveguides to which a first input light is input, a third waveguide to which a second input light is input, and an interaction region that is provided in common on the second and third waveguides in which the first and second input lights are multiplexed and interact. The optical intensity-to-phase converter provides delay to output lights output from the first and second waveguides based on intensity of the first or second input light. Then, it is possible to provide an optical intensity-to-phase converter that enables simple configuration of an optical A/D converter. | 05-09-2013 |
20130134302 | OPTICAL INTENSITY DETERMINATION UNIT, METHOD OF FORMING THE SAME, AND OPTICAL A/D CONVERTER - An optical intensity determination unit includes: an optical input port; an optical output port; an optical resonator provided between the optical input port and the optical output port; a first light receiving element for converting at least a part of an optical signal output from a first output port of the optical resonator into an electric signal; a second light receiving element for converting at least a part of an optical signal output from a second output port of the optical resonator into an electric signal; a comparing circuit for determining magnitudes of the electric signals output from the first light receiving element and the second light receiving element to output a digital signal; and an optical branching circuit for branching light output from the second output port of the optical resonator into the optical output port and the second light receiving element. An optical intensity phase conversion unit for modulating an optical phase according to intensity of input light is provided in a part of a waveguide in the optical resonator. | 05-30-2013 |
20130160453 | COMBUSTOR AND GAS TURBINE - A combustor includes a combustion chamber and an acoustic liner, wherein through-holes through are formed in a wall of the combustion chamber, a plurality of rows of the through-holes is arranged in a lengthwise direction of the combustor, the through-holes of a first through-hole row are shifted with respect to the through-holes of a second through-hole row so that centers of the through-holes of the first and second through-hole rows adjacent each other are staggered in the circumferential direction, cooling grooves are formed so as to avoid the through-holes inside that is sandwiched between the outer peripheral surface and the inner peripheral surface of the combustion chamber, and the cooling grooves include transverse cooling grooves extending in the circumferential direction between rows of the through-holes, and longitudinal cooling grooves extending in the lengthwise direction between the through-holes and connecting the transverse cooling grooves adjacent to each other. | 06-27-2013 |
20130241756 | LIGHT INTENSITY SUBTRACTOR, OPTICAL A-D CONVERTER, AND METHOD FOR SUBTRACTING LIGHT INTENSITY - A light intensity subtractor according to one aspect of the present invention includes a light subtraction unit, a feedback circuit, a light input port, a first light output port, and a second light output port. The light subtraction unit receives input light through the light input port, outputs first output light to the first light output port, and outputs second output light to the second light output port. The light subtraction unit generates the first output light by reducing the light intensity of the second output light from the light intensity of the input light in accordance with a control voltage. The feedback circuit is connected to the light subtraction unit through the second light output port, and outputs the control voltage in accordance with the light intensity of the received second output light. | 09-19-2013 |
20130272700 | OPTICAL SIGNAL CONTROL DEVICE AND OPTICAL SIGNAL CONTROL METHOD - An optical signal control device includes an optical signal control unit and a drive circuit. The optical signal control unit includes m number of optical waveguides for propagating carrier light and (m×n) number of interaction regions, n number of interaction regions formed on each of the optical waveguides. The drive circuit includes (m×n) number of phase control units. The (m×n) number of phase control unit output a data signal for controlling the action of the (m×n) number of interaction regions to each of the (m×n) number of interaction regions. Each of the (m×n) number of phase control units outputs the data signal so that timing when the carrier light propagates to the interaction region to output the data signal and timing when the data signal arrives at the interaction region are synchronized. One of m and n is two or more. | 10-17-2013 |
20130288311 | CELLULOSE SACCHARIFICATION APPARATUS, BIOMASS SACCHARIFICATION APPARATUS, FERMENTATION APPARATUS AND CELLULOSE SACCHARIFICATION METHOD - A fermentation apparatus (A) of the present invention comprising: an enzymatic reactor ( | 10-31-2013 |
20140013762 | COMBUSTOR AND GAS TURBINE PROVIDED WITH SAME - A combustor ( | 01-16-2014 |
20140099053 | OPTICAL WAVEGUIDE DEVICE, OPTICAL INTERFEROMETER AND CONTROL METHOD FOR OPTICAL WAVEGUIDE DEVICE - In order to independently perform control of a phase difference and a loss of light transmitting through an optical waveguide in a simple and easy configuration, an optical waveguide device includes an optical waveguide provided with two electrodes each supplied with a corresponding one of two signals; and a control unit for controlling the two signals so as to cause a phase variation and a loss variation which are caused in light transmitting through the optical waveguide by the two signals to each have a predetermined value. | 04-10-2014 |