Entries |
Document | Title | Date |
20080232738 | SYSTEMS AND METHODS FOR SIDE-LOBE COMPENSATION IN RECONFIGURABLE OPTICAL ADD-DROP MULTIPLEXERS - Systems and methods to reduce passband side-lobes associated with WSS-based ROADMs by applying a filter on each channel are provided. In an exemplary embodiment, a comb filter, such as a thin film filter or an interleaver, is utilized. Additionally, the present invention provides systems and methods to adaptively control amplifier target power and per wavelength target power to maintain signal launching power as per design in networks with WSS-based ROADMs. Accordingly, signal OSNR does not collapse faster than other similar configured system without WSS-based ROADM. In order to correct amplifier target power, the present invention utilizes system information about side-lobe size and OSNR at each amplifier. | 09-25-2008 |
20080253716 | ARRAYED WAVEGUIDE GRATING OPTICAL MULTIPLEXER/DEMULTIPLEXER - An arrayed waveguide grating optical multiplexer/demultiplexer | 10-16-2008 |
20080285913 | Method and apparatus for high resolution coherent optical imaging - A method and an apparatus for examining the sub-surface microstructure of a sample are provided. Radiation from a plurality of optical radiation sources travels along a first optical path. In the first optical path, a device focuses the optical radiation from each of the optical sources into a plurality of respective focal points along the first optical path to provide substantially continuous coverage of a selected portion of the first optical path. Then, a sample on the first optical path within the selected length extending into the sample is scanned along said selected portion of the first optical path. | 11-20-2008 |
20080285914 | Optical Module - An optical module includes an optical element mount substrate having a laser diode and a photo detector mounted thereon on a straight line in a horizontal direction of the surface of the substrate, a first optical function integrate substrates, provided in its one surface with surfaces tilted at an angle to the parallel surface of the substrate for refracting light propagated in a substrate thickness direction, the two tilted surfaces being arranged to face each other. The photo detector and the first and second optical function integrate substrates are laminated in the substrate thickness direction, a first optical wavelength filter and a reflecting film having different wavelength transmissivities to the propagation light are provided in an optical path between the first and second tilted surfaces. | 11-20-2008 |
20080317406 | Optical interconnect - An optical interconnect has a plurality of optical sources, a first lens configured to collimate optical beams from the plurality of optical sources, a second lens configured to refocus the optical beams, and a plurality of optical receivers configured to receive the refocused optical beams from the second lens. | 12-25-2008 |
20090003767 | Spectrally Resolved Fast Monitor - A method and apparatus for monitoring spectral tilt uses an arrayed waveguide grating (AWG) to separate a multiplexed optical signal having a plurality of wavelength channels into a plurality of sub-bands, where each sub-band spans a different wavelength range and includes more than one wavelength channel. A photodetector array is provided to measure the optical power in each of the sub-bands, while control electronics calculate spectral tilt of the multiplexed optical signal using the measured optical power in each of the sub-bands. The spectral tilt monitor in accordance with the instant invention provides spectral resolution, increased monitoring speeds, and decreased manufacturing costs. | 01-01-2009 |
20090022454 | Periodic Optical Filter - A periodic optical filter for interleaving a plurality of optical signals to provide a multiplexed signal for transmission over an optical fiber is disclosed. The periodic optical filter includes a first optical filter constructed to receive at least two optical signals through an input port to provide at least one filtered optical signal. The periodic optical filter also includes a second optical filter, in communication with the first optical filter, constructed to receive the filtered optical signal from the first optical filter through an intermediate port to provide a multiplexed signal for transmission through an output port. At least one of the optical filters includes an infinite-impulse response filter and at least one of the optical filters includes a finite-impulse response filter. Methods of fabrication and methods of use including the periodic optical filter are disclosed. | 01-22-2009 |
20090034906 | SYSTEM AND METHODS FOR ROUTING OPTICAL SIGNALS - A system and methods for routing optical signals are disclosed. The system includes a first large core hollow waveguide having a reflective coating covering an interior of the waveguide and configured to guide a substantially collimated multi-mode coherent light beam. A second large core hollow waveguide with an interior reflective coating is coupled to the first waveguide with a coupling device. The coupling device is configured to redirect at least a portion of the coherent light beam from the first to the second waveguides through an optical path that is sufficiently short that a beam walk-off of the coherent light through the coupling device is less than half a width of the first large core hollow waveguide. | 02-05-2009 |
20090060416 | Wavelength selective switch - A wavelength selective switch of the present invention angularly disperses lights output from a plurality of input ports of an input and output optical system, to an X-direction, according to wavelength, by a diffraction grating to supply the dispersed lights to a condenser lens. The condenser lens is arranged so that a center axis thereof is shifted to the X-direction relative to an axis passing through the center of spreading angle to the X-direction of output beams from the diffraction grating, and accordingly, at a non-operating time, the light of each wavelength passed through the condenser lens is incident on each movable mirror being tilted by an offset angle corresponding to a shift amount of the condenser lens. As a result, it becomes possible to block the connection between an input side and an output side at the non-operating time without degrading the performance at an operating time. | 03-05-2009 |
20090116785 | Device for delaying an optical signal - An apparatus and method for providing a delay to an optical signal including a Latin router having a plurality of input ports, including at least one signal-input port, and a plurality of output ports, including at least one signal-output port, and a plurality of optical waveguides, each connecting one of the input ports to one of the output ports that is not a signal-output port, in which the plurality of waveguides are connected between the input ports and the output ports in an arrangement such that a first signal entering the device and mapped to any one of the output ports experiences a delay that is different from a delay that is experienced by a second signal entering the device and mapped to a different one of the output ports. | 05-07-2009 |
20090220193 | Waveguide grating optical router suitable for CWDM - A planar optical device useful as a low order wavelength router is realized by using a waveguide grating comprising two curved arrays of opposite curvatures. The diffraction order is determined by the angles of rotation of the two curved arrays, and any nonzero order less than about 30 can be realized. This arrangement is smaller, and performs better than a previous grating using a combination of three curved arrays. | 09-03-2009 |
20090232447 | Methods and apparatus for constructing large wavelength selective switches using parallelism - Optical networks are increasingly employing optical network nodes having multiple interfaces to allow a node to direct optical signals received at any interface to any other interface connected to the node. Constructing a larger wavelength selective switching (WSS) module used in such a node can be complex and expensive. A method an apparatus for constructing a large WSS using parallelism is provided. In example embodiments, a larger WSS may include multiple parallel non-cascaded smaller WSSs and an optical coupler configured to optically couple the multiple parallel, non-cascaded smaller WSSs. This technique may be used to construct both N×1 and 1×N WSSs. Because the technique employs multiple parallel, non-cascaded WSSs, all inputs of a larger N×1 WSS and all outputs of a larger 1×N WSS are available receive or transmit external signals rather than being rather than being unavailable due to, for example, cascading smaller WSS devices together. | 09-17-2009 |
20100008624 | OPTICAL FIBER COUPLER ARRAY - An optical fiber coupler array capable of providing multiple low loss, high coupling coefficient interfaces between a predetermined number of low numerical aperture optical fibers and an optical waveguide device with at least a corresponding number of waveguide interfaces. The novel coupler array includes a plurality of coupler inner cores and a plurality of corresponding coupler outer cores, within a medium surrounding each plural outer core, and also includes a first end for interfacing with plural optical fibers and a second end for interfacing with a plurality of waveguide interfaces of an optical waveguide device. The sizes of the inner and outer cores are gradually reduced from the first end to the second end in accordance with at least one predetermined reduction profile. Various parameters, such as refractive indices and sizes of the inner and outer cores and the medium (as well as the reduction profile) are selected to produce a plurality of low numerical aperture waveguides at the first end, and a plurality of high numerical aperture waveguides at the second end, while advantageously minimizing insertion loss and maximizing the coupling coefficient at each end. Advantageously, the novel coupler array may be fabricated as an array of individually drawn couplers from multiple parallel fused performs (arranged in a row, or in another geometric cross section). Alternately, the novel coupler array may be fabricated from a single perform (glass or polymer) embedded with a plurality of parallel inner and outer core sets. | 01-14-2010 |
20100054660 | REMOTE LARGER EFFECTIVE AREA OPTICAL FIBER - Embodiments described herein relate to an optical fiber stretch that may experience forward Raman amplification in which the peak optical signal power occurs at some distance from the transmitter. Smaller effective area optical fiber is used at a portion of the optical fiber stretch in which the optical signal power is increasing, while larger effective area optical fiber is used at a more remote stretch of the optical fiber stretch that experiences the peak optical signal power. Thus, the quality of the signal is better preserved since the larger effective area fiber reduces maximum optical signal density thereby reducing non-linear degradations on signal quality. | 03-04-2010 |
20100074578 | OPTICAL CABLE CONNECTING CLOSURE AND OPTICAL INTERCONNECTION SYSTEM - [Summary] [Problem] To provide an optical cable connecting closure and optical interconnection system which can easily respond to changes in required connection functions if any. | 03-25-2010 |
20100086254 | FIBER OPTIC NETWORK INSTALLATION - A fibre optic network system for a multi-staged installation to a plurality of present and future user locations includes an aggregation point, a trunk line with a plurality of optic fibre cables leading from the aggregation point and at least one branch junction location to serve a future cable user. The trunk line includes at least one dark cable having a free end for removal from the branch junction location. The trunk line includes a trunk conduit having opposing side walls defining an interior space between the side walls for housing the cables. The conduit is configured to permit withdrawal of the length of dark cable from the conduit at a stage subsequent to installation of the trunk line to form a branch leading to the future user location. The dark cable stored within the interior of the conduit has sufficient length to reach the location of the future user. | 04-08-2010 |
20100092132 | WAVEGUIDE CONNECTING STRUCTURE - A waveguide connecting structure includes a light branching element ( | 04-15-2010 |
20100124391 | Growable multi-degree ROADM - A multi-degree expandable reconfigurable optical add drop multiplexer (ROADM) based on a wavelength-selective crossconnect (WSXC), and method for upgrading the same. The WSXC generally consists of an outer layer of optical fan-out devices, and an outer layer of optical fan-in devices. At least one inner layer of optical fan-out or fan-in devices, including at least one wavelength switch, is disposed between the outer layer of optical fan-out devices and the outer layer of optical fan-in devices in a cascaded arrangement relative to the outer layers. At least one output port of an optical fan-out device in the outer layer of optical fan-out devices is connected to an input port of an optical device in the at least one inner layer, and at least one output port of an optical device in the at least one inner layer is connected to an input port of an optical fan-in device in the outer layer of optical fan-in devices. | 05-20-2010 |
20100124392 | Fiber Distribution Hubs with Swing Frame Chassis - A fiber distribution hub includes a swing frame chassis pivotally mounted within an enclosure. The swing frame chassis includes a splitter mounting location at which optical splitters can be mounted and an optical termination field. The optical termination field includes multiple fiber optic adapters. | 05-20-2010 |
20100129028 | FIBER OPTIC TELECOMMUNICATIONS MODULE - A telecommunications module includes a main housing with an optical component within an interior of the main housing and a fiber optic adapter block coupled to the main housing, the adapter block including a one-piece main body including a top wall and a bottom wall, the adapter block defining a plurality of openings extending from a front end to a rear end of the main body, each opening defining a separate adapter, each opening defining a longitudinal axis, the adapters being configured to receive connectorized cables extending from the optical component within the interior of the main housing, the adapter block including at least one guide rail extending generally between the top wall and the bottom wall of the main body, the guide rail configured for slidably mounting the fiber optic telecommunications module to a telecommunications device once the adapter block has been coupled to the main housing, wherein the main housing includes an integrally formed pivotable latching arm configured to pivot for selectively latching and unlatching the telecommunications module for slidable movement with respect to the telecommunications device. | 05-27-2010 |
20100142888 | COMPACT FIBER DISTRIBUTION HUB - A device may provide a first opening via which a feeder optical fiber cable that carries an input signal enters the device. In addition, the device may include a slot configured to retain a splitter module. The splitter module may include a single-fiber input cable that receives and carries the input signal from the feeder optical fiber cable, an optical splitter that receives the input signal from the single-fiber input cable, splits the input signal into a plurality of output signals, and transmits each of the plurality of output signals, and a multi-fiber output cable that receives the plurality of output signals from the optical splitter and carries the plurality of output signals. The device may also provide a second opening via which a multi-fiber distribution cable that receives the plurality of output signals from the multi-fiber output cable exits the device. The multi-fiber distribution cable may carry the plurality of output signals. | 06-10-2010 |
20100142889 | WAVELENGTH TUNABLE OPTICAL INTERLEAVER - An optical interleaver of a wavelength division multiplexing (WDM) system includes an optical coupler, first and second waveguides, a high reflection mirror, and first and second phase shifters. The coupler divides an input optical signal. The first waveguide branches off from the coupler in a first direction. The second waveguide branches off from the coupler in a second direction for providing an optical path different from that provided by the first waveguide. The high reflection mirror is disposed at an end of the first waveguide for reflecting a first optical signal incident onto the first waveguide. The first phase shifter is disposed at an end of the second waveguide for multiple-reflecting a second optical signal incident onto the second waveguide. The second phase shifter is disposed at the first or second waveguide for adjusting an optical path difference between the first and second waveguides by varying its refractive index. | 06-10-2010 |
20100195955 | OPTICAL FIBER INTERCONNECTION DEVICES AND SYSTEMS USING SAME - Optical fiber interconnection devices, which can take the form of a module, are disclosed that include an array of optical fibers and multi-fiber optical-fiber connectors, for example, a twenty-four-port connector or multiples thereof, and three eight-port connectors or multiples thereof. The array of optical fibers is color-coded and is configured to optically interconnect the ports of the twenty-four-port connector to the three eight-port connectors in a manner that preserves transmit and receive polarization. In one embodiment, the interconnection devices provide optical interconnections between twenty-four-fiber optical connector configurations to eight-fiber optical connector configurations, such as from twenty-four-fiber line cards to eight-fiber line cards, without having to make structural changes to cabling infrastructure. In one aspect, the optical fiber interconnection devices provide a migration path from duplex optics to parallel optics. | 08-05-2010 |
20100260453 | QUALITY FACTOR (Q-FACTOR) FOR A WAVEGUIDE MICRO-RING RESONATOR - The waveguide in the ring and the bus waveguide in the immediate vicinity of the ring are made wider than the optimal single mode size. The bus waveguide has adiabatic tapers which serve to connect single mode portions in the bus waveguide to the wider portion of the bus waveguide to expand the mode from the narrower waveguide to the wider waveguide. Since the light is now spread out over a larger area in the wider waveguides, the scattering loss from the sidewalls is reduced and the loss is lower. This lower loss gives rise to a higher Q in the ring since the Q of the ring is directly proportional to the round trip loss. | 10-14-2010 |
20100266237 | Adapter block including connector storage - A fixture includes an adapter array with movable adapter modules and a storage panel. A housing of a connector holder includes a plurality of openings for receiving fiber optic connectors and protecting the polished end face of the connectors from damage while the connectors are stored within the storage panel. Each of the connectors are inserted within the openings in the connector holder for storage and protection until the cables need to be connected to a customer equipment cable in the adapter array. The fixture is used in a cabinet including fiber optic splitters. Offset vertical fingers are provided on the fixture for cable management. | 10-21-2010 |
20100278478 | MULTI-CHANNEL OPTICAL COUPLER - A solid core, multi-channel optical coupler comprising an elongate mixer body having an input end, an output end and sidewalls forming a length of the mixer body, where the input end is configured for coupling to a plurality of input channels providing an optical signal for transmission through the mixer body, and a plurality of output tapers coupled to the output end. Each of the output tapers has a reception area adjacent the output end of the mixer body for receiving a portion of the optical signal transmitted through the mixer body. Furthermore, the reception area of each output taper is variable to vary the intensity of the optical signal received by the output taper. | 11-04-2010 |
20100290737 | OPTICAL WAVELENGTH DIVISION MULTIPLEXED MULTIPLEXER/DEMULTIPLEXER FOR AN OPTICAL PRINTED CIRCUIT BOARD AND A METHOD OF MANUFACTURING THE SAME - The invention provides an optical mux/demux for an optical printed circuit board. The mux/demux comprises: a first waveguide formed on a support layer for carrying a wavelength division multiplexed optical signal; a separator/combiner for separating the wavelength division multiplexed signal into component signals of corresponding wavelengths or for combining component signals into the said wavelength division multiplexed signal; and plural second waveguides, each for receiving or providing one or more of the said component signals, wherein the separator/combiner is at a predetermined location relative to the waveguides. | 11-18-2010 |
20100303408 | Port Mapping for Series Connected Fiber Optic Terminals - Fiber optic cable assemblies and fiber optic terminals supporting port mapping for series connected fiber optic terminals are disclosed. In one embodiment, a fiber optic cable assembly is provided. The fiber optic cable assembly includes a fiber optic cable having a plurality of optical fibers disposed therein between a first end and a second end of the fiber optic cable. The plurality of optical fibers on the first end of the fiber optic cable are provided according to a first mapping. The plurality of optical fibers on the second end of the fiber optic cable are provided according to a second mapping. In this regard, the fiber optic cable assembly provides port mapping of optical fibers to allow multiple fiber optic terminals having the same internal fiber mapping to be connected in series in any order, while providing the same connectivity to each of the terminals in the series. | 12-02-2010 |
20100322554 | OPTICAL INTERCONNECTION METHODS FOR HIGH-SPEED DATA-RATE OPTICAL TRANSPORT SYSTEMS - Optical interconnection methods for high-speed data-rate optical transport systems are disclosed that optically interconnect active assemblies to a fiber optic cable in a polarization-preserving manner. The methods include defining active-assembly-wise connector ports that connect to active assembly transmit and receive ports, and defining or establishing a pairings method between the active-assembly-wise connector ports. In a first optical interconnection assembly, an active-assembly-wise port is optically connected to a cable-wise port. In the second optical interconnection assembly, the cable-wise port that corresponds to the connected cable-wise port in the first optical interconnection assembly is optically connected to a select active-assembly-wise port as defined by the pairings method. The optical connection process is then repeated from the second to the first optical interconnection assembly. The optical interconnection acts are repeated until all of the active-assembly-wise ports are connected. | 12-23-2010 |
20110002583 | OPTICAL DEVICE - Provided is an optical device. The optical device includes a multiplexer/demultiplexer, a multimode interference (MMI) coupler, a first waveguide, and second waveguides. The multiplexer/demultiplexer splits optical signals having a plurality of channels and received through a first port according to their wavelength to provide the split optical signals to second ports, or providing input optical signals having wavelengths difference from each other and received through the second ports to the first port. The multimode interference (MMI) coupler is connected to the first port. The first waveguide is connected to the MMI coupler. The second waveguides are connected to the second ports. The MMI coupler has a width decreasing toward the multiplexer/demultiplexer. | 01-06-2011 |
20110033152 | OPTICAL ASSEMBLY - An optical assembly includes a first transparent substrate having first and second surfaces, a second transparent substrate having substantially parallel third and fourth surfaces, a reflective portion on the second transparent substrate, a plurality of filters between the first substrate and the reflective portion, the plurality of filters filtering light beams incident thereon, the plurality of filters and the reflective portion forming a bounce cavity within the second transparent substrate, a collimating lens for collimating light beams to be input to the bounce cavity, a tilt mechanism for introducing tilt to light beams input to the bounce cavity; an input port receiving light beams and an output port transmitting light beams. The tilt mechanism may be between the first and second substrate. | 02-10-2011 |
20110052119 | FIBER OPTIC DEVICE - A fiber optic device outputs, at high conversion efficiency, an idler lightwave having a wavelength λ | 03-03-2011 |
20110075968 | Fiber Optic Terminals Configured to Dispose a Fiber Optic Connection Panel(s) Within an Optical Fiber Perimeter and Related Methods - Fiber optic terminals and methods for establishing optical connections are disclosed. In one embodiment, a fiber optic terminal is provided that includes a base defining an interior chamber. The fiber optic terminal includes a terminal cover configured to close onto the base. A plurality of fiber routing guides are disposed in the base defining an optical fiber perimeter in the interior chamber. At least one fiber optic connection panel is disposed in the fiber optic terminal for establishing optical connections. The fiber optic connection panel is disposed on the internal surface of the terminal cover such that when the terminal cover is closed, the fiber optic connection panel is disposed within the optical fiber perimeter. In this manner, routing of optical fibers around the optical fiber perimeter provides space for disposing the fiber optic connection panel in the fiber optic terminal when the terminal cover is closed. | 03-31-2011 |
20110081108 | Wavelength Interleaver - The present invention provides a wavelength interleaver comprising a first interleaving unit, a second interleaving unit and an adapting waveguide coupled between the first interleaving unit and the second interleaving unit; both the first interleaving unit and the second interleaving unit including an input waveguide, an output waveguide and a filter coupled between the input waveguide and the output waveguide, the input waveguide of the first interleaving unit receiving an optical input signal with a particular wavelength for coupling to the filter of the first interleaving unit and outputting a first interleaving signal from the output waveguide of the first interleaving unit; the input waveguide of the second interleaving unit receiving the optical input signal through the adapting waveguide for coupling to the filter of the second interleaving unit and outputting a second interleaving signal from the output waveguide of the second interleaving unit. The gap width between the input waveguide and the filter of the first interleaving unit is a first gap width and the gap width between the filter and the output waveguide of the first interleaving unit is a second gap width, wherein one of the first gap width and the second gap width is greater than a jumping threshold gap width, and the other one of the first gap width and the second gap width is less than the jumping threshold gap width. The gap width between the input waveguide and the filter of the second interleaving unit is a third gap width and the gap width between the filter and the output waveguide of the second interleaving unit is a forth gap width, wherein both the third and forth gap widths are greater or less than the jumping threshold gap width. | 04-07-2011 |
20110110624 | ARRAYE WAVEGUIDE DIFFRACTION GRATING - An optical wavelength multi/demultiplexing circuit is provided in which temperature dependence at a transmission center wavelength remained in an athermalized AWG is compensated. An AWG according to an embodiment of the present invention is compensated for the main temperature dependence at the transmission center wavelength. The AWG comprises an optical splitter, a first and second arm waveguides, an optical mode combining coupler and a multimode waveguide between an input/output waveguide and a slab waveguide. The optical mode combining coupler couples fundamental mode light from the first arm waveguide as fundamental mode and the fundamental mode light from the second arm waveguide as first mode. The multimode waveguide is capable of propagating the fundamental and first mode light. This AWG is configured such that the temperature dependence remained in the arrayed waveguide grating is compensated by changing the optical path length difference between the first and second arm waveguides with temperature. | 05-12-2011 |
20110123148 | Optical router with nearly ideal performance - An optimized planar optical router consisting of two stages performing stationary imaging between an input waveguide and a set of output waveguides has advantages of reduced size, larger number of channels and minimal loss variation in each passband. Each stage is a waveguide grating router, the two stages are characterized by nearly equal free-spectral ranges, and a waveguide lens is connected between the two stages. In one embodiment, the lens is connected between the central zones of the two stages, and the diffraction orders of the two stages vary monotonically from each passband to the next. In another embodiment, the loss caused by secondary images is substantially reduced by using a composite lens providing efficient transmission of both principal and secondary images. | 05-26-2011 |
20110129184 | WAVEGUIDE SYSTEMS AND METHODS - A waveguide apparatus is provided. The apparatus can include a base member including a first surface having at least one first attachment feature and a waveguide member including a first surface and a second surface. The waveguide member first surface is complimentary to and disposed proximate the base first surface. The waveguide member second surface can include at least one channel. The apparatus can further include a cover member, comprising a plurality of second attachment features adapted to engage at least a portion of the at least one first attachment features disposed thereabout. At least a portion of the cover member can be disposed proximate the at least one channel, to provide at least one hollow core waveguide. | 06-02-2011 |
20110188803 | COUPLING MULTIPLE CONDUCTOR UNDERSEA OPTICAL CABLES TO AN UNDERSEA DEVICE WITH AN ISOLATED BYPASS CONDUCTIVE PATH ACROSS THE UNDERSEA DEVICE - A multiple conductor optical cable may be coupled to an undersea device, such as a cable joint, branching unit, or repeater, with one or more isolated bypass conductive paths being provided across the undersea device. At least one conductor may be terminated within a housing of the undersea device and at least one conductor may be coupled to a conductive bridge member that provides the isolated bypass conductive path across the device. Multiple conductor optical cables may be coupled to undersea devices in optical networks using independent power paths, for example, to deliver power to different powered components at different voltage potentials. | 08-04-2011 |
20110188804 | OPTICAL JOINT - An optical joint ( | 08-04-2011 |
20110194810 | REINFORCED MULTI-BODY OPTICAL DEVICES - Reinforced multi-body optical devices. In one example embodiment, a method for fabricating a reinforced multi-body optical device includes various acts. First, a supporting plate is bonded, using pressure and heat, to a multi-body optical device to form a reinforced multi-body optical device. The supporting plate has a coefficient of thermal expansion (CTE) that is within about 0.5 parts per million of the CTE of the multi-body optical device. Then, the multi-body optical device is ground to reduce the thickness of the multi-body optical device. | 08-11-2011 |
20110206318 | Optical router with stationary response and increased number of channels - A planar optical router consisting of two stages performing stationary imaging has advantages of reduced size, increased number of channels and reduced crosstalk. In one embodiment, each stage of the router includes a waveguide grating, and the router produces several sets of interleaved images, with the property that different sets are characterized by different diffraction orders of the two gratings. The new arrangement substantially increases the number of output waveguides, as compared to previous arrangements using only one set of images, characterized by the same order of the output stage. Moreover, since adjacent sets are characterized by different orders, crosstalk is substantially reduced. In a second embodiment, the number of output waveguides is further increased by including two gratings in the second stage. | 08-25-2011 |
20110211787 | OPTICAL INTERCONNECT COMPONENTS - A component for an optical interconnect includes a waveguide having at least one surface that is configured at an angle equal to or less than 90° relative to an axis of the waveguide. A tap is operatively connected to the waveguide. The tap has an angled surface that is adhered to the angled surface of the waveguide. An angle of the angled surface of the tap is substantially identical to the angle of the angled surface of the waveguide. An axis of the tap is positioned at an angle that is two times the angle of the angled surface of the tap. An at least partially reflective coating established on at least a portion of the angled surface of the tap. | 09-01-2011 |
20110299810 | MODULAR OUTLET - In conjunction with a wiring in a house carrying data network signal, a modular outlet ( | 12-08-2011 |
20120002918 | WAVELENGTH MULTIPLEXER/DEMULTIPLEXER AND METHOD OF MANUFACTURING THE SAME - The present invention provides a wavelength multiplexer/demultiplexer comprising a Mach-Zehnder interferometer and an arrayed waveguide diffraction grating, the wavelength multiplexer/demultiplexer having a simple configuration and being capable of reducing the degradation in the temperature compensation characteristics of a temperature compensation material provided in the Mach-Zehnder interferometer or the peeling-off of the temperature compensation material, and a method of manufacturing the same. A wavelength multiplexer/demultiplexer comprises an AWG including two separated slab waveguides and an MZI including two arm waveguides. A temperature compensation groove is formed in the two arm waveguides, wherein in a space between the temperature compensation groove, and two separated slab waveguides, a compensation material, the refractive index matching that of the AWG or Mach-Zehnder interferometer, the compensation material having a temperature dependence coefficient with a sign different from that of the temperature dependence coefficient of the waveguide core and having plasticity or fluidity, is filled. | 01-05-2012 |
20120014644 | Optical router with nearly ideal performance - An optimized planar optical router consisting of two stages performing stationary imaging between an input waveguide and a set of output waveguides has advantages of reduced size, larger number of channels and minimal loss variation in each passband. The new router is an optimized M×N imaging arrangement including two waveguide gratings and n waveguide lenses connected between the principal zones of the two gratings. The largest values of N are realized by using a combination of two techniques that increase N without increasing the size of the two gratings. One technique increases N for a given number n of lenses and, the other, increases n. In one embodiment, each lens produces a periodic sequence of passbands, all transmitted from a particular input waveguide to the same output waveguide, whereas, in a second embodiment, the above passbands are transmitted to different output waveguides. In both cases, the loss caused by secondary images is substantially reduced by including secondary lenses. | 01-19-2012 |
20120057817 | LIGHT WAVE GUIDE WITH LOW REFLECTIVITY - An optical light splitter includes or is connected to at least two input waveguides ( | 03-08-2012 |
20120063719 | DWDM and CWDM Communication System over Multimode Fiber - The transmission of multiple signals over multimode fiber is accomplished using single-mode transmission lasers and single-mode DWDM (Dense Wave Division Multiplexing) and CWDM (Coarse Wave Division Multiplexing) multiplexers. It also allows for any datarate communication, including high datarate (10 Gbps and faster) signals to be transported over any distance of multimode fiber. This ability will allow institutions that currently have multimode fiber in place, to extend the useful life of the fiber by increasing multimode fiber transmission capacity and thereby reducing overall infrastructure costs. | 03-15-2012 |
20120082413 | AN OPTICAL CONNECTION SYSTEM - The present disclosure provides an optical connection system which comprises optical components that include a plurality of vertical cavity surface emitting lasers (VCSELs) for emitting modulated light in response to applied electrical signals and a plurality of receivers for receiving the emitted light. The optical components are arranged in at least two monolithically integrated modules each comprising at least two of the optical components. The optical connection system further comprises at least one light guiding component for guiding the light between the VCSELs and the receivers. The optical connection system also comprises coupling elements for coupling the at least one light guiding component to the monolithically integrated modules such that in use light is transmitted between modules via the at least one light guiding component. | 04-05-2012 |
20120087623 | OPTICAL ASSEMBLY FOR A WDM RECEIVER OR TRANSMITTER - An optical assembly for a wavelength-division-multiplexing (WDM) transmitter or receiver that lends itself to cost-effective production-line manufacturing. In one embodiment, the fiber optic assembly has a vernier-type arrayed waveguide grating (AWG) with five optical ports at one side and fourteen optical ports at another side. Ten of the fourteen ports are optically coupled to ten photo-detectors or lasers. A selected one of the five ports is optically coupled to an external optical fiber. The coupling optics and the mounting hardware for the AWG are designed to accommodate, with few relatively straightforward adjustments performed on the production line, any configuration of the AWG in which any consecutive ten of the fourteen ports are optically coupled to the ten photo-detectors or lasers. | 04-12-2012 |
20120093459 | OPTICAL CHANNEL TAP ASSEMBLY - An optical channel tap assembly comprises a first N by M waveguide array including a first set of optical channels to convey optical signals along a first set of conveyance paths. The optical channel tap assembly also comprises a second N by M waveguide array including a second set of optical channels to convey the optical signals along a second set of conveyance paths, the optical signals received from the first set of conveyance paths. Additionally, the optical channel tap assembly comprises a beam splitter, disposed between the first N by M waveguide array and the second N by M waveguide array, to divert a first portion of power from the optical signals away from the second N by M waveguide array while allowing a second portion of power from the optical signals to propagate into the second N by M waveguide array. | 04-19-2012 |
20120099814 | UPSTREAM FIBER OPTIC COUPLERS AND METHODS FOR POWER SPLITTING PASSIVE OPTICAL NETWORKS - A fiber optic coupler includes a housing that receives upstream optical signals from drop optical fibers that are optically coupled to optical network units in a power splitting passive optical network and provides an aggregate upstream optical signal to a trunk optical fiber that is optically coupled to an optical line terminal in the power splitting passive optical network, without having passed through a power splitter. At least one reflector and/or refractor in the housing is oriented to reflect and/or refract at least one upstream optical signal from at least one of the drop optical fibers, so as to produce the aggregate upstream optical signal for the trunk optical fiber. Various configurations of reflectors and/or refractors may be provided. Relative methods are also disclosed. | 04-26-2012 |
20120106891 | METHOD AND DEVICE FOR TUNABLE OPTICAL FILTERING - An optical device includes an optical splitter having a resonant structure including at least a resonator, the optical splitter being adapted to receive at an input port a WDM optical signal and to output at first and second output ports, respectively, a first and a second portion of the optical signal, the second portion including the channels spaced by an integer multiple of the WDM frequency spacing; an optical combiner adapted to receive at first and second input ports, respectively, the first and the second portions and adapted to output them at an output port; a first optical path optically connecting the first output port to the first input port; a second optical path optically connecting the second output port to the second input port; and an optical filter optically coupled to the second optical path, wherein the optical combiner includes at least a resonator. | 05-03-2012 |
20120128295 | MULTI-CHANNEL OPTICAL MODULE - The present inventive concept herein relates to multi-channel optical modules, and more particularly, to a multi-channel optical module capable of processing a plurality of signals having different optical wavelengths. The multi-channel optical module may include a stem including one or more cavities; at least one lead pin formed in one or more cavities; a plurality of optical devices formed in the one or more cavities; and a filter portion forming an optical path between the plurality of optical devices and an optical fiber by separating a plurality of optical signals according to a wavelength. According to the inventive concept, processing capacity of the optical module may be improved. Also, according to the inventive concept, electrical and optical cross talk of the optical module may be reduced. | 05-24-2012 |
20120128296 | THREE-WAVELENGTH OPTICAL MULTIPLEXER - Disclosed is a three-wavelength optical multiplexer which is compact, and which multiplexes light having different wavelength incident to three single-mode optical fibers, particularly light of red, green, and blue at transmittance above a certain reference. Specifically disclosed is a three-wavelength optical multiplexer ( | 05-24-2012 |
20120141066 | OPTICAL COMMUNICATION BUS NETWORK FOR AVIONIC EQUIPMENT - An avionic system for an aircraft including at least two pieces of equipment ( | 06-07-2012 |
20120148188 | ENERGY TARGET SYSTEM - A system for determining properties of a radiant energy beam. The system include a plurality of fiber optic cables each including a first end and a second end and a plurality of optical coupling nodes coupled to a target body, wherein each optical coupling node includes one or more terminations, wherein each termination is coupled to the first end of one of the plurality of fiber optical cables to receive radiant energy from an incident radiant energy beam to determine properties of the radiant energy beam. | 06-14-2012 |
20120148189 | USING AN OPTICAL EXPANDER/CONDENSER TO ACHIEVE A COMPACT BEAM STRUCTURE FOR A MULTI-CHANNEL OPTICAL ROTARY JOINT - The multiple channel fiber optic rotary joint of this invention can transmit an increased number of optical signals simultaneously through the de-rotating mechanism without increasing the size of the de-rotating mechanism. It also allows for the recapturing of the signals with relative ease. This is accomplished through the use of an optical condenser and/or an optical expander that reduces or expands the overall all beam structure without significantly altering the relative structure. The expanders and condensers are inverse structures in that if an optical signal is condensed when passing from right to light through the condenser it is expanded when passing left to right through the same condenser. | 06-14-2012 |
20120163753 | METHOD AND APPARATUS FOR CONFIRMING OPTICAL FIBERS CONNECTION IN OPTICAL CONNECTOR - Provided is a method for confirming optical fibers connection in a connection part in an optical connector, including: allowing light to pass through a first optical fiber and allowing cladding mode light to disappear; and detecting a difference in light intensity in the connection part between before and after the light from the first optical fiber enters a second optical fiber disposed in the optical connector. | 06-28-2012 |
20120224805 | RADIAL OPTICAL COUPLER - An optical device includes an optical grating coupler and a plurality of optical waveguides coupled thereto. The optical grating coupler is formed along a planar surface of a substrate, and includes a pattern formed by ridges concentrically located on the surface about a center thereon. Each adjacent pair of ridges is separated by a groove. Each waveguide of the plurality of waveguides is oriented about radially with respect to the center, and has a first end that terminates near an outermost one of the ridges. The first ends are about uniformly spaced along the outermost one of the ridges. | 09-06-2012 |
20120230631 | OPTICAL HYBRID CIRCUIT, OPTICAL RECEIVER, OPTICAL TRANSCEIVER, AND LIGHT RECEIVING METHOD - An optical hybrid circuit includes an MMI coupler including input channels provided at positions symmetrical first output channels, and second output channels, to convert multilevel modulation signal into first and second optical signals each having an in-phase relationship; first optical coupler coupled to one of the first and the second output channels, and having a branching ratio of 85:15 or 15:85, to convert the first optical signals into third optical signals having a 45- or 135-degree phase relationship; second optical coupler coupled to the other of the first and the second output channels, and having a same branching ratio as that of the first optical coupler, to convert the second optical signals into fourth optical signals having a 135- or 45-degree phase relationship; and a phase controlling region provided on at least one of one of the first output channels and one of the second output channels. | 09-13-2012 |
20120237161 | METHOD FOR PRODUCING AN OPTICAL SPLITTER CASCADE AND OPTICAL ASSEMBLY - An optical assembly, which is in particular in the form of a splitter component with a so-called splitter forming a passive optical component, is produced particularly inexpensively. In a first step a plurality of splitters are produced on a common wafer by forming a corresponding conductor track pattern. In a second step optical fibers are coupled simultaneously to the connection sides of the individual splitters with the aid of a connection carrier. Then, in a third step the individual splitters with the connection carriers connected thereto are separated form one another. Only one common coupling operation for a large number of splitters is required. The splitters may then be connected to form a splitter cascade. | 09-20-2012 |
20120237162 | TRANSVERSE MODE FILTER FOR WAVEGUIDES - The invention relates to a transverse mode filter in an optical waveguide ( | 09-20-2012 |
20120243827 | OPTICAL WAVEGUIDE DEVICE AND OPTICAL HYBRID CIRCUIT - The optical waveguide device includes a first optical coupler which branches input light and outputs first signal light and second signal light, an optical phase shifter including a first and a second optical waveguides of optical path lengths different from each other and giving a phase difference between the first signal light and the second signal light, and the second optical coupler coupling the first signal light outputted from the first optical waveguide and the second signal light outputted from the second optical waveguide. The first optical waveguide and the second optical waveguide have the same waveguide width and have optical waveguides bent with substantially the same radius of curvature. | 09-27-2012 |
20120269482 | SINGLE-PACKAGE DUAL OPTICAL-FUNCTION DEVICE - A four-fiber collimator is coupled to the optics of a single interleaver to produce the functionality of two co-packaged interleavers. Two fibers of the collimator are coupled to the core optics of a single interleaver to produce two pairs of output beams. The other two fibers of the collimators are coupled to receive the reflection output beams. The geometry of the optical fibers in the bundle is controlled to produce interleaver outputs with no offset. In another embodiment two fibers of the four-fiber collimator are coupled as inputs to and the other two fibers as outputs from a Fabry-Perot etalon. The geometry of the fibers and the focal length of the collimator are controlled to produce two outputs with peaks offset by a predetermined amount. | 10-25-2012 |
20130101252 | ARRAYED-WAVEGUIDE GRATING HAVING TAILORED THERMAL-SHIFT CHARACTERISTICS AND AN OPTICAL ASSEMBLY EMPLOYING THE SAME - An arrayed-waveguide grating (AWG) whose thermal-shift characteristics can be tailored to match the corresponding characteristics of another optical device (e.g., a solid-state laser or modulator) to which the AWG is intended to be coupled. In one embodiment, the physical means that enable the match of the thermal-shift characteristics include one or more wedge-shaped structures placed into one or both of the waveguide-coupling regions of the AWG. By appropriately selecting the structure's material, shape, and orientation and also the number of structures, the AWG can be manufactured to have substantially the same thermal-shift coefficient as the other optical device. As a result, the AWG can advantageously remain in optimal spectral alignment with the optical device despite temperature fluctuations and, as such, does not require a thermostat or temperature controller for proper operation. | 04-25-2013 |
20130148923 | BIDIRECTIONAL WAVELENGTH CROSS CONNECT ARCHITECTURES USING WAVELENGTH ROUTING ELEMENTS - Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least one of the plurality of ports is disposed to simultaneously transmit an output optical signal having at least one of the spectral bands. A plurality of wavelength routing elements are configured to selectively route input optical signal spectral bands to output optical signals. | 06-13-2013 |
20130188909 | COUPLING MULTIPLE CONDUCTOR UNDERSEA OPTICAL CABLES TO AN UNDERSEA DEVICE WITH AN ISOLATED BYPASS CONDUCTIVE PATH ACROSS THE UNDERSEA DEVICE - A multiple conductor optical cable may be coupled to an undersea device, such as a cable joint, branching unit, or repeater, with one or more isolated bypass conductive paths being provided across the undersea device. At least one conductor may be terminated within a housing of the undersea device and at least one conductor may be coupled to a conductive bridge member that provides the isolated bypass conductive path across the device. Multiple conductor optical cables may be coupled to undersea devices in optical networks using independent power paths, for example, to deliver power to different powered components at different voltage potentials. | 07-25-2013 |
20130209032 | Free Optical Beam Fiber-to-Fiber Coupling Systems - A fiber-to-fiber coupling system includes: multiple optical input fibers, each optical input fiber having an exit-face on a light-exit side of the optical input fiber, in which the light-exit-sides are disposed around a central axis, and in which an optical axis extending through the light-exit side is tilted toward the central axis; an optical output fiber having an entry-face for receiving light; and an optical input-coupling device arranged to couple a light beam exiting from the end-face of each optical input fiber into the entry-face of the output fiber. The optical input-coupling device comprises, for each light beam exiting the exit surfaces of the optical input fibers, a single corresponding lens to transmit the light beam or a single corresponding ellipsoidal mirror to reflect the light beam. | 08-15-2013 |
20130216180 | OPTICAL INTERCONNECT FABRICS IMPLEMENTED WITH STAR COUPLERS - This disclosure is directed to scalable optical interconnect fabrics for distributing optical signals over a computer systems. In one aspect, an optical interconnect fabric includes a star coupler and a plurality of output optical fibers. Each output optical fiber is connected at a first end to the star coupler and is connected at a second end to a node of a plurality of nodes. The fabric also includes the input optical fiber connected at a first end to the star coupler and connected at a second end to a node of the plurality of nodes. The star coupler is to receive at least one optical signal via the input optical fiber, is to split each optical signal into a plurality of optical signals with approximately the same optical power, and is to output each optical signal into one of the output optical fibers. | 08-22-2013 |
20130223794 | Methods and Apparatus for Constructing Large Wavelength Selective Switches Using Parallelism - Optical networks are increasingly employing optical network nodes having multiple interfaces to allow a node to direct optical signals received at any interface to any other interface connected to the node. Constructing a larger wavelength selective switching (WSS) module used in such a node can be complex and expensive. A method an apparatus for constructing a large WSS using parallelism is provided. In example embodiments, a larger WSS may include multiple parallel non-cascaded smaller WSSs and an optical coupler configured to optically couple the multiple parallel, non-cascaded smaller WSSs. This technique may be used to construct both N×1 and 1×N WSSs. Because the technique employs multiple parallel, non-cascaded WSSs, all inputs of a larger N×1 WSS and all outputs of a larger 1×N WSS are available receive or transmit external signals rather than being rather than being unavailable due to, for example, cascading smaller WSS devices together. | 08-29-2013 |
20130243374 | OPTICAL BRANCHING ELEMENT, OPTICAL WAVEGUIDE DEVICE USING OPTICAL BRANCHING ELEMENT, AND METHOD OF MANUFACTURING OPTICAL BRANCHING ELEMENT, METHOD OF MANUFACTURING OPTICAL WAVEGUIDE DEVICE - An optical branching element includes: a first waveguide section which has a shape wherein the core width is reduced without variation from a first end section to a second end section; a fourth waveguide section which has a shape wherein the core width is increased without variation from a third end section to a fourth end section respectively connected to the second and a third waveguide sections; and a fifth waveguide section which connects the second end section and the third end section and has a core width of any value from 0.8 μm to 2.7 μm. The relative refractive index of the cores and a clad of the first through fifth waveguide section is at least 1.3% with respect to light in a C band wavelength domain. | 09-19-2013 |
20130279846 | Multichannel Optical Data Coupler - An optical coupler is used to transmit optical data across a temporary connection. A housing is configured with a transparent interface window and positioned in front of a receiving optical coupler so that optical signals pass through the transparent interface window for reception by receiving optical coupler. The receiving optical coupler has a capability of accepting alignment errors caused by aligning the housing with a mating housing in an aquatic environment. Alignment is achieved via an alignment mechanism that mechanical positions the mating optical coupling components with sufficient alignment accuracy to permit the optical coupler to receive and transmit signals. | 10-24-2013 |
20130279847 | OPTICAL WAVEGUIDE DEVICE AND A MANUFACTURING METHOD FOR AN OPTICAL WAVEGUIDE DEVICE - To reduce the wavelength dependence of the phase difference given to the lightwaves traveling through the optical waveguide arms of a coherent mixer, the optical waveguide device includes a first optical branching device branching a first input light and outputting to a first and a second optical waveguides, a second optical branching device branching a second input light and outputting to a third and a fourth optical waveguides, a first optical coupler that mixes lightwaves travelling through the first and the third optical waveguides, and then branches and outputs a first and a second output lights, a second optical coupler that mixes the lightwaves which travel through the second and the fourth optical waveguides, and then branches and outputs a third and a fourth output lights. Here optical path lengths are mutually equal between the first and the second optical waveguides, and between the third and the fourth optical waveguides. | 10-24-2013 |
20130287337 | OPTICAL BEAM COUPLERS AND SPLITTERS - Beam couplers and splitters are disclosed herein. An example of a beam coupler and splitter includes a first waveguide having a first waveguide bevel and a bend, the first waveguide bevel to totally internally reflect at least some light incident thereon. A second waveguide includes a second waveguide bevel complementarily shaped to the first waveguide bevel, the second waveguide being coupled to the first waveguide such that i) the first waveguide bevel is offset from the second waveguide bevel so that a first portion of the first waveguide bevel is in direct contact with a first portion of the second waveguide bevel, a second portion of the first waveguide bevel is exposed, and a second portion of the second waveguide bevel is exposed, and ii) a predetermined coupling ratio is achieved. | 10-31-2013 |
20130294724 | DISPERSION-CORRECTED ARRAYED WAVEGUIDE GRATING - Techniques are described for forming an arrayed waveguide grating. In one example, an arrayed waveguide grating comprises a waveguide array coupled to the output of a parallel mode converter and a concave reflective diffraction grating coupled to the output of the waveguide array, wherein the waveguide array comprises a first waveguide and a second waveguide, wherein the first waveguide of the waveguide array has a different length from the second waveguide of the waveguide array. The waveguide array has a first dispersion having a first sign and a first magnitude, wherein the concave reflective diffraction grating has a second dispersion having a second sign and a second magnitude, wherein the second sign is opposite the first sign. | 11-07-2013 |
20130301984 | OPTICAL POWER TRANSMISSION SYSTEM AND METHOD HAVING COUNTER-PROPAGATING CONTROL SIGNAL - A system for delivering optical power over optical conduits includes at least one optical power source delivering multiple optical power forms over an optical conduit with a counter propagating optical control signal. | 11-14-2013 |
20130308901 | LIGHT TRANSMISSION SYSTEM WITH OPTICAL WAVEGUIDE - A light transmission system includes a light guide support, a first convex lens, an optical waveguide member, and two second convex lenses. The light guide support includes a first surface, a second surface, a hollow space formed between the first surface and the second surface, and an inner reflecting surface forming an angle of 45 degrees relative to the first surface. The first convex lens is formed at the first surface, and configured for converging light to the inner reflecting surface. The optical waveguide member is located at the hollow space, and includes a main section parallel with the first surface, two first branch sections extending from and forming equal angles relative to the main section, and two second branch sections extending from the respective first branch sections. The two second convex lenses are formed at the second surface and aligned with the respective second branch sections. | 11-21-2013 |
20130343700 | OPTICAL FIBER ARRAY CONNECTIVITY SYSTEM FOR MULTIPLE TRANSCEIVERS AND/OR MULTIPLE TRUNK CABLES - A transition device for an optical fiber connection system adapted to interconnect a trunk cable with a plurality of transceivers includes: a first set of at least four optical fibers, each of the optical fibers having a trunk end and a transceiver end; a single trunk end terminal having a plurality of trunk ports arranged in a first row, each port connected with a respective one of the set of optical fibers at its trunk end, wherein a first axis of symmetry divides the ports; and a plurality of transceiver end terminals, each of the transceiver end terminals having at least one couplet of transceiver ports, each of the couplets of transceiver ports receiving a respective couplet of the set of optical fibers at their transceiver ends. | 12-26-2013 |
20130343701 | UPSTREAM FIBER OPTIC COUPLERS AND METHODS FOR POWER SPLITTING PASSIVE OPTICAL NETWORKS - A fiber optic coupler includes a housing that receives upstream optical signals from drop optical fibers that are optically coupled to optical network units in a power splitting passive optical network and provides an aggregate upstream optical signal to a trunk optical fiber that is optically coupled to an optical line terminal in the power splitting passive optical network, without having passed through a power splitter. At least one reflector and/or refractor in the housing is oriented to reflect and/or refract at least one upstream optical signal from at least one of the drop optical fibers, so as to produce the aggregate upstream optical signal for the trunk optical fiber. Various configurations of reflectors and/or refractors may be provided. Relative methods are also disclosed. | 12-26-2013 |
20140072260 | Optical Multiplexer/Demultiplexer - An apparatus for optical spectrometry utilizes a simplified construction, reducing the number of independent optical elements needed while providing a sizeable dispersed spectrum. The apparatus provides a spectral intensity distribution of an input source wherein individual spectral components in the source can be measured and, in some embodiments, can be manipulated or filtered. | 03-13-2014 |
20140105539 | PORT MAPPING IN FIBER OPTIC NETWORK DEVICES - A fiber optic network device comprising an input port adapted to receive a multi-fiber cable having active optical fibers designated in a consecutive sequence is disclosed. A first plurality and a second plurality of optical fibers are disposed within the fiber optic network device. The first plurality of optical fibers aligns to a first section of the consecutive sequence and a second plurality of optical fibers aligns to a second section of the consecutive sequence. A plurality of drop ports in the fiber optic network device are adapted to optically couple ones of the first plurality of optical fibers to at least one drop cable. A pass-through port is adapted to optically couple the second plurality of optical fibers to a second fiber optic network device through a multi-fiber adapter in a central alignment at the pass-through port. | 04-17-2014 |
20140112618 | WDM Multiplexing/De-Multiplexing System and the Manufacturing Method Thereof - A WDM multiplexing/demultiplexing system includes a de-multiplexer configured to separate and guide light beams from an incident ray having a plurality of wavelengths to corresponding lenses on an optical device, a multiplexer configured to guide light beams from optical transmitters having various wavelengths through the corresponding lenses on the optical device and combine the light beams, a lens array including the corresponding lenses to receive and/or transmit the light beams from or to the de-multiplexer and multiplexer, and a light beam collimator configured to function with the multiplexer and de-multiplexer. The light beams received or transmitted by the light beam collimator and the light beams transmitted or received from or to the multiplexer and de-multiplexer are collinear. The light beam collimator and multiplexer/de-multiplexer can be easily positioned to predetermined or designed positions, thereby providing light beams output through the lenses in a plastic optical device. The WDM system advantageously reduces optical signal loss, while increasing the assembly yield. | 04-24-2014 |
20140153870 | MONOLITHIC SPLITTER ASSEMBLY - Technologies are presented that provide a monolithic splitter assembly that may, for example, be used in a network computing system for network signal monitoring. A method of routing an optical signal in such a system can include receiving one or more optical input signals at one or more respective inputs, the one or more optical input signals originating at a first device; and for each of the one or more optical input signals, splitting the optical input signal into two or more split input signals along a respective pathway etched onto a medium; outputting a first split input signal of the two or more split input signals at a first output, the first split input signal intended for a second device; and outputting a second split input signal of the two or more split input signals at a second output, the second split input signal intended for a third device. | 06-05-2014 |
20140161388 | Method for modifying the combining or splitting ratio of a multimode interference coupler - Method for modifying the splitting or combining ratio of a first multimode interference (MMI) coupler ( | 06-12-2014 |
20140161389 | APPARATUS FOR CONNECTING OPTICAL FIBER - Provided is an apparatus for connecting optical fiber. The apparatus for connecting optical fiber includes an input terminal in which an input optical fiber receiving light is inserted through an input ferrule, an output terminal emitting the light incident through the input optical fiber into an outer optical fiber through an output ferrule, and a module coupling unit connecting the input terminal to the output terminal. | 06-12-2014 |
20140212088 | OPTICAL DEVICE AND MANUFACTURING METHOD THEREOF - An optical device according to an embodiment includes a laser light source, a first optical waveguide that propagates light being output from the laser light source, a first distribution device that distribute the light into n lights, n second optical waveguides that propagates the n lights being output from the first distribution device, n second distribution devices that distribute each of the n lights into m lights, n×m third optical waveguides arranged in a matrix form and propagates the n×m lights being output from the m second distribution devices, a control electrode that apply a voltage or current to each of the third optical waveguides, and control phase of the light propagating through the third optical waveguides, and an output end surface that output the n×m lights. | 07-31-2014 |
20140270635 | Multi-Mode Interference Device - A multi-mode interference (MMI) device includes a substrate layer, a core layer grown on the substrate layer for propagating an optical signal, and a cladding layer grown on the core layer for guiding the optical signal. The MMI device also includes a non-uniform pattern of patches forming a non-uniform refractive index distribution within the MMI device. | 09-18-2014 |
20140270636 | EFFICIENT FIBER USAGE WITHIN PRE-TERMINATED FIBER DEVICES - A pre-terminated fiber optic connector is provided for coupling electronic components and devices. A multi-fiber optical cable assembly or multi-fiber interconnection module can facilitate optical coupling while maximizing available optical path bandwidth inherent to standard connectors. In an embodiment, a “2×24/24 to 2×20/24+1×8/12” configuration can be employed. | 09-18-2014 |
20140294345 | OPTICAL COMPONENT ASSEMBLY FOR USE WITH AN OPTICAL DEVICE - The inventive optical component assembly advantageously enables a multi-waveguide optical component (such as the inventive optical fiber coupler array, a multi-core optical fiber, etc.), to be coupled to at least one waveguide of an optical device at a predefined coupling angle. The optical component assembly of the present invention comprises a multi-waveguide optical component with an output end, a prism having an input surface, an output surface, and an internal reflective surface with a predefined reflection angle, and a GRIN lens, positioned between the component output end and the prism input surface, along a longitudinal axis of the multi-waveguide optical component. In accordance with the present invention, the length of the GRIN lens, and its refractive index gradient profile are optimized to form an optical image of the output end of the multi-waveguide optical component, at the output surface of the prism, thus enabling the output surface of the prism to be coupled to at least one waveguide of an optical device, with the predefined reflection angle corresponding to the angle at which the multi-waveguide optical component may be coupled to the optical device. | 10-02-2014 |
20140334775 | COHERENT MIXER AND 2X2 MULTI-MODE INTERFERENCE COUPLER - A coherent mixer includes a multi-mode waveguide that has a side surface and an end; a waveguide group including a plurality of semiconductor regions connected to the end; a first semiconductor region that has a side surface extending substantially parallel to the side surface of the multi-mode waveguide; and an external semiconductor region having a side surface extending substantially parallel to an edge of the waveguide group. The side surface of the semiconductor region is spaced apart from the side surface of the multi-mode waveguide by a distance smaller than or equal to a reference value. The side surface of the external semiconductor region is spaced apart from the edge of the waveguide group by a distance smaller than or equal to the reference value. The reference value is a maximum value of distances between arbitrary adjacent semiconductor regions in the waveguide group. | 11-13-2014 |
20150036974 | PLASTIC AND GLASS OPTICAL FIBER BUS NETWORK - An optical network architecture can include a first pair of tapered mixing rods and a second pair of tapered mixing rods. A first plurality of plastic optical fibers is communicatively coupled from the first pair of tapered mixing rods to a first plurality of line replaceable components, and a second plurality of plastic optical fibers is communicatively coupled from the second pair of tapered mixing rods to a second plurality of line replaceable components. At least one optical fiber communicatively coupled from the first pair of tapered mixing rods to the second pair of tapered mixing rods, the at least one optical transmission line comprising a hard clad silica optical fiber. | 02-05-2015 |
20150055913 | OPTICAL CONNECTOR, METHOD FOR MANUFACTURING THE SAME, AND MOLD CONTAINER FOR MANUFACTURING THE SAME - Provided is an optical connector that can optically couple a multi-core fiber and single-mode fibers with a high efficiency. The optical connector connects: N (N is an integer of 3 to 14) single-mode fibers each including one core with a high refractive index, in a cladding material with a low refractive index; to a multi-core fiber including N cores with high refractive indexes in a cladding material with a low refractive index such that the cores of the single-mode fibers are respectively optically coupled to the cores of the multi-core fiber. The optical connector includes: a quartz glass cylinder having a first end face to be in contact with the multi-core fiber and a second end face to be in contact with the single-mode fibers; and N glass fibers that are arranged in the quartz glass cylinder so as to extend from the first end face to the second end face, the N glass fibers each including: a circular rod with a high refractive index that has a constant outer diameter; and a low refractive index material that surrounds an outer periphery of the circular rod and has a constant thickness. | 02-26-2015 |
20150071586 | Multi-Channel, Multi-Port Optical Tap Coupler - A multi-channel, multi-port optical tap coupler with an alignment base element, a pair of sub-assemblies located at opposite ends of the alignment base element, focusing elements located next to each sub-assembly, and an optical filter adjacent to, and in-between the focusing elements is described. The first sub-assembly has an array of waveguides with each waveguide having a radial offset and an azimuthal position with respect to a center axis of the array. The first array includes transmission waveguides and receiving waveguides and each receiving waveguide has a corresponding transmission wave guide that is separated by an azimuthal angle of 180 degrees. The second sub-assembly has a second array of waveguides including a wave guide having the same radial offset and the same azimuthal position for each of the transmission wave guides of the first array. | 03-12-2015 |
20150071587 | Multi-Channel, Multi-Port Optical Tap Coupler - A multi-channel, multi-port bi-directional optical tap coupler with an alignment base element, a pair of sub-assemblies located at opposite ends of the alignment base element, focusing elements located next to each sub-assembly, and an optical filter adjacent to, and in-between the focusing elements is described. The first sub-assembly has an array of waveguides with each waveguide having a radial offset and an azimuthal position with respect to a center axis of the array. The first array includes transmission waveguides and receiving waveguides and each receiving waveguide has a corresponding transmission wave guide that is separated by an azimuthal angle of 180 degrees. The second sub-assembly has a second array of waveguides including a wave guide having the same radial offset and the same azimuthal position for each of the transmission wave and receiving guides of the first array. | 03-12-2015 |
20150086156 | REINFORCED MULTI-BODY OPTICAL DEVICES - A reinforced multi-body optical device that in one embodiment includes a multi-body optical device having a thickness that is less than or equal to about 1.0 millimeter and a supporting plate bonded without epoxy to the multi-body optical device. In an embodiment the supporting plate has a coefficient of thermal expansion (CTE) that is within about 0.5 parts per million of the CTE of the multi-body optical device. | 03-26-2015 |
20150093073 | Optical Tap Modules Having Integrated Splitters And Aggregated Multi-Fiber Tap Output Connectors - Embodiments are disclosed for tap modules having integrated splitters and aggregated multi-fiber tap output connectors. Tap modules are configured to receive optical input/output signals from optical input/output fibers connected to multiple network devices within a network communication system. The tap modules include splitters that are configured to generate multiple tap output signals that are proportional, lower-energy copies of optical signals being communicated between the network devices. These tap output signals are then provided to aggregated multi-fiber tap output connectors for the tap modules. These multi-fiber tap output connectors can then be utilized to connect to other network monitoring devices, such as network monitoring tool systems and/or network tool optimizing systems. The aggregated multi-fiber tap output connectors are configured to operate at a higher aggregated rate as compared to the optical input/output signals. | 04-02-2015 |
20150117813 | Mode Size Adjusting For Edge Coupling Devices - An apparatus comprising a waveguide along a longitudinal axis at a first elevation, an optical splitter coupled to a first edge of the waveguide along the longitudinal axis, two or more inverse tapers coupled to a second edge of the optical splitter along the longitudinal axis, and one or more offset inverse tapers that are substantially parallel with the two or more inverse tapers, wherein the one or more offset inverse tapers are along the longitudinal axis at a second elevation. | 04-30-2015 |
20150147028 | WAVEGUIDE ASSEMBLY - A waveguide assembly for guiding radiation along an optical path, the assembly comprising a first guide element, a second guide element and a coupling element for coupling radiation between the first element and the second element, the first element, second element and coupling element comprising a refractive index along the optical path which is greater than a refractive index of a medium surrounding the elements, wherein, the first and second elements are spaced from the coupling element along the optical path, such that the medium extends between the first element and the coupling element and second element and the coupling element, within the optical path and wherein the radiation is arranged to couple between the first and second guide elements by reflecting within the coupling element from an interface between the coupling element and the medium. | 05-28-2015 |
20150323742 | BREAKOUT CABLE - A breakout cable includes a data-lane module comprising a plurality of data lanes configured to send and receive a plurality of data signals, a plurality of breakout modules, and a plurality cables. Each breakout module is associated with a data lane and each cable interfaces with the data-lane module and a corresponding data lane to send and receive the plurality of signals between the data-lane module and a corresponding breakout module at a nominal 25 Gbps or a nominal 100 Gbps. In various embodiments, the data-lane module connects to a host and each of the plurality of modules connects to one or more system(s) to enable host-to-system(s) communications and system(s)-to-host communications at a nominal 100 Gbps or a nominal 400 Gbps. | 11-12-2015 |
20150331192 | SYSTEMS AND METHODS FOR OPTICALLY CONNECTING FIBER ARRAYS WITH PAIRED TRANSMIT AND RECEIVE FIBERS - Systems and methods for optically connecting first and second fiber arrays at different locations with paired transmit and received fibers are disclosed. A method includes establishing at a first location first and second fiber arrays of fibers T and R, and establishing at a second location third and fourth fiber arrays of fibers T′ and R′. A trunk cable is then used to optically connect fibers T to fibers R′ and fibers R′ to fibers T to form first fiber pairs (T,R) where T=1 to (N/2) and R=[(N/2)+1] to N, and second fiber pairs (T′, R′), where T′=1′ to (N/2)′ and R′=[(N/2)+1]′ to N′, wherein N is an even number greater than 2. | 11-19-2015 |
20150346442 | Optical Communication Module and Method for Producing the Same - An optical communication module includes a plurality of semiconductor lasers that emit optical signals with different wavelengths, a plurality of first mounts each including a first mounting surface on which a corresponding one of the semiconductor lasers is mounted and a first side surface that intersects with the first mounting surface, a second mount including a second mounting surface on which a lens array that collimates an optical signal emitted from a corresponding one of the plurality of semiconductor lasers and a multiplexing optical system that multiplexes the plurality of optical signals that have been collimated by the lens array and a second side surface that intersects with the second mounting surface. Each of the first mounts is fixed to the second mount in a state where a corresponding one of the semiconductor lasers is aligned with the lens array and the first side surface abuts the second side surface. | 12-03-2015 |
20150370028 | SWITCH RACK SYSTEM - In one embodiment, the system comprises: (a) a chassis; (b) one or more cards mounted in the chassis, each card having a plurality of switch ports, the plurality of switch ports being aligned in one or more columns; (c) an aggregator mounted adjacent the chassis, the aggregator having a plurality of bays, each bay being aligned with a card in the chassis, at least one of the bays having a faceplate comprising at least first and second aggregator ports aligned in a column; (d) at least first and second hydras, wherein each hydra comprises at least (i) a first connector; (ii) a plurality of second connectors; (iii) a plurality of conductors, each conductor connecting the first connector to one of the second connectors, the plurality of conductors being bundled together to form a trunk portion from the first connector to a breakout point, the plurality of conductors being separated into breakout portions from the breakout point to the second connectors; (iv) wherein the trunk portion of the first cable is longer than that of the second cable; and (e) wherein the first connector of the first hydra is connected to the first aggregator port and the second connectors of the first hydra are connected to a first set of switch ports, and the first connector of the second hydra is connected to the second aggregator port and the second connectors of the second hydra are connected to a second set of switch ports, wherein the first set of switch ports are further away from the aggregator than the second set of switch ports. | 12-24-2015 |
20150378115 | Window of Optical Waveguide - An optical waveguide has a window for receiving optical signals re-directed by a beam splitter and a heating element associated with the window. | 12-31-2015 |
20160004020 | BIDIRECTIONAL OPTICAL COMMUNICATIONS MODULE HAVING AN OPTICS SYSTEM THAT REDUCES OPTICAL LOSSES AND INCREASES TOLERANCE TO OPTICAL MISALIGNMENT - In a bidirectional optical communications module, an optics system is provided having a lens block that uses a single surface for reflecting light into or reflecting light passing out of the end of the optical fiber and a single surface for reflecting light toward a monitor photodetector. No other surfaces in the lens block are used to turn the light path. A filter block of the optics system that is adjacent to the lens block performs wavelength multiplexing and demultiplexing. The filter block reflects light at either its lower or upper surface back toward the lens block. In some embodiments, a portion of light passes through the upper surface of the filter block to provide some attenuation of light being transmitted so that the light is not coupled back into the light source. Because the upper surface of the filter block is the topmost surface of the optics system, the optics system can be very compact while also limiting the number of surfaces that turn the light path. Limiting the number of surfaces in the optics system that turn the light path reduces optical losses and increases tolerance to optical misalignment. | 01-07-2016 |
20160004026 | HIGH DENSITY SPLITTER AGGREGATION MODULE - A module includes a plurality of splitters, a plurality of inputs, and a plurality of outputs wherein the outputs are connected to multi-fiber connectors and wherein outputs from a plurality of splitters are connected to one of the multi-fiber connectors. The splitters have outputs in multiples of eight, such as a 1×32 splitter. The multi-fiber connectors include twelve fiber cables. | 01-07-2016 |
20160018599 | Using an Optical Expander/Condenser to Achieve a Compact Beam Structure for a Multi-Channel Optical Rotary Joint - The multiple channel fiber optic rotary joint of this invention can transmit an increased number of optical signals simultaneously through the de-rotating mechanism without increasing the size of the de-rotating mechanism. It also allows for the recapturing of the signals with relative ease. This is accomplished through the use of an optical condenser and/or an optical expander that reduces or expands the overall all beam structure without significantly altering the relative structure. The expanders and condensers are inverse structures in that if an optical signal is condensed when passing from right to light through the condenser it is expanded when passing left to right through the same condenser. | 01-21-2016 |
20160025935 | OPTICAL FIBER CONNECTOR, OPTICAL MODULE, AND FABRICATING METHOD THEREOF - Provided is a downsized connector for a multicore fiber and a plurality of single-mode fibers which can simplify the core alignment process between the fibers. The optical fiber connector includes a mount substrate, a multicore fiber including a plurality of cores arrayed in the same plane, a first sub-substrate configured to fix an end part of the multicore fiber, and to be bonded on the mount substrate, a plurality of single-mode fibers including at least the same number of fibers as the plurality of cores of the multicore fiber, and a second sub-substrate configured to fix end parts of the plurality of single-mode fibers, and to be bonded on the mount substrate. A relative position between the first sub-substrate and the second sub-substrate is determined, so that the plurality of cores of the multicore fiber and the plurality of single-mode fibers of the same number as the plurality of cores are optically coupled, respectively. | 01-28-2016 |
20160025942 | OPTICAL WAVEGUIDE MODULE SYSTEM AND METHOD - The present disclosure relates to systems and methods for optically connecting circuit elements and optical fiber systems. In one embodiment, an optical waveguide module includes an optical light guide having opposite first and second planar surfaces extending between a first side edge and a second side edge. The optical light guide can be configured with a substrate supporting one or more optical pathways extending between the first and second side edges. The waveguide module can further include one or more first and second edge connectors, each of which has an adapter port and a first alignment slot opposite the adapter port. The alignment slots extend over the first and second planar surfaces at the first and second side edges to align the adapter ports with the one or more optical pathways in a first direction. | 01-28-2016 |
20160033720 | POLARIZATION-MAINTAINING (PM) DOUBLE-CLAD (DC) OPTICAL FIBER - A double-clad (DC) polarization-maintaining (PM) optical fiber comprises a core, an inner cladding, an outer cladding, and stress rods. The core has a core refractive index (n | 02-04-2016 |
20160047989 | WAVELENGTH DIVISION MULTIPLEXING OF UNCOOLED LASERS WITH WAVELENGTH-COMMON DISPERSIVE ELEMENT - An example demultiplexer may include at least one dispersive element that is common to multiple wavelength channels. The demultiplexer may additionally include multiple field lenses positioned optically downstream from the at least one dispersive element, where a number of the field lenses is equal to a number of the wavelength channels. An example multiplexer may include a single piece power monitor assembly that includes a collimator lens array, a focusing lens array, and a slot integrally formed therein. The collimator lens array may be positioned to receive multiple wavelength channels from a laser array. The focusing lens array may be positioned to focus multiple portions of the wavelength channels onto an array of photodetectors. The slot may be configured to tap the portions from the wavelength channels collimated into the single piece power monitor assembly by the collimator lens array and to direct the portions toward the focusing lens array. | 02-18-2016 |
20160062042 | Spectral Power Combining With Volume Bragg Grating Elements - Fiber optic devices including volume Bragg grating (VBG) elements are disclosed. A fiber optic device may include one or more optical inputs, one or more VBG elements, and one or more optical receivers. Methods for manufacturing VBG elements and for controlling filter response are also disclosed. A VBG chip, and fiber optic devices using such a chip, are also provided. A VBG chip includes a monolithic glass structure onto which a plurality of VBGs have been recorded. | 03-03-2016 |
20160085027 | TAPERED OPTICAL MIXING RODS - An optical transmission device includes a tapered mixing rod that includes an optically transmissive material and has a first face, a second face, and a length. A size of the first face is based on a first number of optical fibers and a size of the second face is based on a second number of optical fibers, where the size of the first face is different from the size of the second face. The length can be selected such that light entering the first face from one of the first number of optical fibers is distributed substantially uniformly across the second face and such that light entering the second face from one of the second number of optical fibers is distributed substantially uniformly across the first face. | 03-24-2016 |
20160109652 | MODIFYING LIGHT OF A MULTICORE ASSEMBLY TO PRODUCE A PLURALITY OF VIEWING ZONES - Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise an image-generating source to provide one or more frames of image data in a time-sequential manner, a light modulator configured to transmit light associated with the one or more frames of image data, a substrate to direct image information to a user's eye, wherein the substrate houses a plurality of reflectors, a first reflector of the plurality of reflectors to reflect transmitted light associated with a first frame of image data at a first angle to the user's eye, and a second reflector to reflect transmitted light associated with a second frame of the image data at a second angle to the user's eye. | 04-21-2016 |
20160124151 | ARRANGEMENT TO OPTICALLY COUPLE MULTIPLE WAVEGUIDES TO A FEW-MODE FIBER - An arrangement to optically couple multiple waveguides to a few-mode fiber comprises an optical assembly to respectively deflect light beams impacting the optical assembly and an optical coupler being configured to convert a respective fundamental mode of a plurality of the light beams coupled out of a respective different one of a plurality of the multiple waveguides and impacting the optical coupler to a respective higher order mode of each of the plurality of the light beams. The optical assembly comprises a first optical device to deflect each of the light beams impacting the first optical device from the optical coupler to a core section of the few-mode fiber to transfer light within the few-mode fiber. | 05-05-2016 |
20160131843 | MULTICHANNEL OPTICAL TRANSMITTER AND METHOD OF ALIGNING COMPONENTS IN THE SAME - An optical multiplexer and methods of making and calibrating the same are disclosed. A method of aligning components in a multichannel optical/optoelectronic transmitter includes passively fixing a plurality of light emitters in place on a substrate; adjusting positions of a first lens passing light from a first light emitter and an optical signal transmission medium receiving the light from the first light emitter until a far field spot of the light from the first light emitter is at or near an end of the transmission medium; fixing one or more optical subassemblies on the substrate; and adjusting positions of the optical subassembly(ies) to align light from the remaining light emitters with the far field spot. Some embodiments include multiple optical subassemblies, each including a lens and a filter. Other embodiments include one optical subassembly including a mirror and a beam combiner. | 05-12-2016 |
20160147017 | OPTICAL MODULE - An optical module is composed of a plurality of optical elements to emit or receive light rays having wavelengths different from each other, and a plurality of optical members arranged in correspondence with the plurality of optical elements respectively. The plurality of optical members each of which includes a mirror section to transmit a predetermined transmission band wavelength light ray while reflecting a predetermined reflection band wavelength light ray, and a lens section located opposite the corresponding optical element. The plurality of optical members are positioned and disposed in such a manner that the respective lens sections thereof collimate or converge the light rays to be emitted or received by the plurality of optical elements respectively, while the respective mirror sections thereof multiplex or demultiplex the light rays to be emitted or received by the plurality of optical elements respectively. | 05-26-2016 |
20160161674 | OPTICAL COMBINER, LASER DEVICE USING SAME, AND METHOD FOR MANUFACTURING OPTICAL COMBINER - An optical combiner | 06-09-2016 |
20160161727 | OPTICAL CROSS-COUPLING MITIGATION SYSTEMS FOR WAVELENGTH BEAM COMBINING LASER SYSTEMS - In various embodiments, wavelength beam combining laser systems incorporate optical cross-coupling mitigation systems and/or engineered partially reflective output couplers in order to reduce or substantially eliminate unwanted back-reflection of stray light. | 06-09-2016 |
20160170144 | OPTICAL COUPLER FOR A MULTICORE FIBER | 06-16-2016 |
20160170149 | FURCATING OPTICAL COUPLING DEVICES AND FURCATION SYSTEMS INCORPORATING THE SAME | 06-16-2016 |
20160181711 | MIDPLANE INTERCONNECT SYSTEM WITH CONDUCTOR TWIST MITIGATION | 06-23-2016 |
20160252679 | LIGHT GUIDE DEVICE, MANUFACTURING METHOD, AND LASER DIODE MODULE | 09-01-2016 |
20160377811 | Optical Coupling Using Polarization Beam Displacer - An optical coupling apparatus for coupling an optical fiber to a photonic chip is described. The apparatus includes a collimating microlens for collimating light from the optical fiber; a polarization splitting beam displacer for separating the light collimated by the collimating microlens into orthogonally polarized X and Y component beams; at least one focusing microlens for directing the X and Y component beams separately onto the photonic chip; and first and second surface grating couplers (SGCs) orthogonally disposed on the photonic chip and configured for operation in a same polarization state, for coupling the X and Y component beams, respectively, to the photonic chip. | 12-29-2016 |
20160377813 | OPTICAL PHASE DIVERSITY RECEIVER FOR COHERENT OPTICAL COMMUNICATION - An optical phase diversity receiver may include: a diffraction grating including grating surfaces; a first input waveguide to which a first optical signal is inputted; a second input waveguide to which a second optical signal is inputted; and a slab waveguide including an input terminal optically coupled with the first and second input waveguides, and an output terminal provided at a position at which optical signals reflected by the diffraction grating reach the slab waveguide. Every determined number of grating surfaces are chirped in an identical manner. The slab waveguide is configured to guide the first and the second optical signals to the diffraction grating and guide the optical signals reflected by the diffraction grating to the output terminal. The grating surfaces are configured such that each of the optical signals reflected by the diffraction grating is divided into the predetermined number by optical power distribution. | 12-29-2016 |
20160377814 | OPTIMIZED 2X2 3DB MULTI-MODE INTERFERENCE COUPLER - An optimized SOI 2×2 multimode interference (MMI) coupler is designed by use of the particle swarm optimization (PSO) algorithm. Finite Difference Time Domain (FDTD) simulation shows that, within a footprint of 9.4×1.6 μm | 12-29-2016 |
20170235055 | OPTICAL COUPLER, LASER DEVICE, AND TAPER FIBER | 08-17-2017 |
20170235057 | PASSIVELY ALIGNED SINGLE ELEMENT TELESCOPE FOR IMPROVED PACKAGE BRIGHTNESS | 08-17-2017 |
20220137299 | Wavelength Division Multiplexing Filter for Multiplexing or Demultiplexing Using Cascaded Frequency Shaping - A wavelength division multiplexing filter comprises: a first multi-order Mach-Zehnder interferometer comprising a plurality of first-order Mach-Zehnder interferometers, and a second multi-order Mach-Zehnder interferometer comprising a plurality of first-order Mach-Zehnder interferometers; wherein the first multi-order Mach-Zehnder interferometer and the second multi-order Mach-Zehnder interferometer are included in a group of multiple multi-order Mach-Zehnder interferometers arranged within a binary tree arrangement, the binary tree arrangement comprising: a first set of a plurality of multi-order Mach-Zehnder interferometers, the first set including the first multi-order Mach-Zehnder interferometer, and having an associated spectral response with a first spacing between adjacent passbands, and a second set of at least twice as many multi-order Mach-Zehnder interferometers as in the first set, the second set including the second multi-order Mach-Zehnder interferometer, and having an associated spectral response with a second spacing between adjacent passbands that is twice the first spacing. | 05-05-2022 |