Optical communications inventions 04/09

20090110390 - Multimode fiber link probe: A link probe for multimode fibers in optical networks is provided. An optical test probe signal is sent over a multimode fiber of an optical network link and a receiver converts the optical signal into an electronic signal with a trigger generated by the clock recovery section of an EDC... Agent: Aka Chan LLP / Cisco

20090110392 - Allocating upstream bandwidth in an optical communication network: A gigabit passive optical network or other type of optical communication network comprises an optical line terminator that transmits data in a downstream direction to multiple optical network units. The optical network units transmit data in an upstream direction to the optical line terminator. In one aspect of the invention,... Agent: Ryan, Mason & Lewis, LLP

20090110391 - Photodiode assembly within a fiber optic tap and methods thereof: An arrangement in a fiber optic network device for analyzing a set of optical signals traversing the fiber optic network device is provided. The arrangement includes a set of ports for receiving and outputting the set of optical signals. The arrangement also includes a set of photodiodes, which is configured... Agent: Ipsg, P.C.

20090110394 - 1+1 protection method of services in obs networks, intersection node apparatus and service protection system: A 1+1 protection method of service in optical burst switching (OBS) networks, an intersection node apparatus, and protection system of service are provided. The method discloses that burst packets bearing service are transferred through two risk-independent routes, and each burst packet corresponds to a control packet. The intersection node receives... Agent: Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd)

20090110393 - Broadband wavelength multiplexing and demultiplexing filter and optical splitter with optical signal multiplexing and demultiplexing function: Two Mach-Zehnder optical interferometer circuits 13a and 13b are accurately point-symmetrically connected to each other to form a first point-symmetrically connected optical interferometer circuit 5 constituting a light input side circuit 1. Optical signals having a plurality of wavelengths are input to a light input terminal 17. A second point-symmetrically... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090110395 - Path computation element method to support routing and wavelength assignment in wavelength switched optical networks: A network component comprising at least one processor configured to implement a method comprising transmitting a request to compute a routing assignment, a wavelength assignment, or both, wherein the request comprises a lightpath constraint indicator is disclosed. Also disclosed is an apparatus comprising a Path Computation Client (PCC) configured to... Agent: Conley Rose, P.C.

20090110396 - Method and apparatus for hitless routing of optical signals in an optical transport network: A method is provided for routing optical signals in an optical transport network. The method includes: separating an incoming optical multiplexed signal having a plurality of wavelength-channels embodied therein into two or more channel groups, where each channel group has a subset of the wavelength-channels and channels to be routed... Agent: Harness, Dickey & Pierce, P.L.C

20090110397 - Prevention of collision for time division multiplexing optical network, apparatus and method thereof: An apparatus for preventing collision of upstream signals is provided. The apparatus is suitable for a time division multiplexing (TDM) passive optical network (PON). The apparatus includes an optical coupler device, an optic-electron converter (O/E), a control system, and an optical signal switch module. The O/E is coupled to the... Agent: Jianq Chyun Intellectual Property Office

20090110398 - Electrical point-to-multipoint repeater for pon: The present invention relates to an electrical point-to-multipoint repeater for Passive Optical Networks (PONs). A multiport passive optical network extender (1) comprises an optical input/output port for connection via an optical fiber (4) to the feeder side of the PON; a plurality of optical input/output ports for connection via respective... Agent: Harness, Dickey & Pierce, P.L.C

20090110399 - Storage system and optical module switching method for storage system: An object of the present invention is to continue to send and receive to/from a host when a failure has occurred in a storage device interface. A storage system includes a host and a storage device connected to the host via a communication line, wherein the storage device comprises a... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20090110400 - Wdm type passive optical network: In a WDM type PON system, each ONU comprises an optical transmitter capable to transmit optical signals with variable wavelengths, an optical signal receiving filter variable its receiving wavelength, and a control unit. An OLT selects in response to a wavelength allocation request from each ONU, a transmitting wavelength and... Agent: Mcdermott Will & Emery LLP

20090110401 - Controllable optical add/drop multiplexer: The inventions relate to a method for operating a controllable selective optical add/drop channel for fiber-optic communication system provided with 2N of wavelength-division multiplexing channels, whose optical frequencies are retunable at a constant frequency separations Δv between adjacent channels, with the aid of the inventive controllable optical add/drop multiplexers (70,... Agent: James C. Wray

20090110402 - Distributed wavelength assignment using signaling protocols in wavelength switched optical networks: An apparatus comprising a first node configured to forward a wavelength assignment message to a second node, wherein the wavelength assignment message comprises a wavelength set type-length-value (TLV), a wavelength assignment method selection TLV, a supplemental wavelength assignment information TLV, a traffic parameter TLV, or combinations thereof. Also included is... Agent: Conley Rose, P.C.

20090110403 - Method and apparatus for reducing data burst overhead in an ethernet passive optical network: One embodiment of the present invention provides a system that reduces data burst overhead in an Ethernet passive optical network which includes a central node and at least one remote node, wherein downstream data from the central node is broadcast to the remote nodes, and wherein upstream data from a... Agent: Park, Vaughan & Fleming LLP

20090110404 - Connector system with electrical connection and infrared coupling and method: An electrical connector system provides both electrically conductive connection and infrared coupling, and includes at least one electrically conductive member adapted to provide electrically conductive connection to another electrically conductive member, an infrared member adapted to provide infrared member coupling with another infrared member, and wherein the at least one... Agent: Warren A. Sklar (soer) Renner, Otto, Boisselle & Sklar, LLP

20090110405 - Method of communicating between terminals using optical wireless line and mobile terminal for performing the same: A wireless communication method between mobile terminals using visible light and a mobile terminal therefore are disclosed. The method includes: periodically transmitting device discovery signals for searching for a visible light communication device when there is a request for a visible light communication; transmitting only reference clock signals between the... Agent: Cha & Reiter, LLC

20090110406 - Dynamic optical signal tracking on a detector array in a free space optical communication system: A free-space optical communication system includes a detector array having a plurality of detector elements and a transmitting source. Dynamic movement of the optical signal on the detector array is caused by changes in orientation of the transmitting source. A tracker tracks the movement of the optical signal in real-time... Agent: Hewlett Packard Company

20090110407 - Dual wiring system: A dual wiring system with improved function expandability is provided. A base unit is mounted in a wall surface of a structure, and connected to both of an electric power line and an information line previously installed in the structure. Each of function units has at least one of functions... Agent: Edwards Angell Palmer & Dodge LLP

20090110408 - Laser optical transmission system with dual modulation: An optical transmitter for generating a modulated optical signal for transmission over dispersive fiber optic links in which a first information-containing radio frequency signal input is applied to a modulation circuit for directly modulating a semiconductor laser with the signal input. The output of the laser is applied to a... Agent: Emcore Corporation

20090110409 - High sensitivity two-stage amplifier: The invention relates to amplifiers and in particular, to a transimpedance amplifier for high rate applications. Disclosed is a two stage transimpedance amplifier having a first stage comprising an amplifier and a load and a second stage comprising an amplifier and a resistor. Negative feedback is provided through a feedback... Agent: Weide & Miller - Mindspeed

20090103915 - Protocol-less all-optical 1+1 bidirectional revertive linear protection system: In an optical network a 1+1 bidirectional protection system is presented. Each node across a link has photodiodes to monitor the power of signals received by the node on receiving working and protection optical fibers and also optical switches connected to transmission working and protection optical fibers to modulate signals... Agent: Aka Chan LLP / Cisco

20090103916 - Optical chassis monitoring: Systems and methods for processing event data provided by a managed device which includes a plurality of components. One or more components are identified based on the event data, providing, for example, more accurate information for purposes of network management and equipment maintenance. Applications include the identification of one or... Agent: Goodwin Procter LLP Patent Administrator

20090103917 - Bidirectional hdcp-based data transmission apparatus using single optical fiber: The present invention provides a bidirectional HDCP-based data transmission apparatus using an optical fiber which includes a core having a first facet and a second facet. The bidirectional HDCP-based data transmission apparatus includes a forward transmission module and a backward transmission module. The forward transmission module is used for emitting... Agent: Reed Smith LLP

20090103918 - Communication system using passive optical network and passive optical network: An OLT transmits and receives a CMTS/CM apparatus control signal through an apparatus physical management interface which is physically identical to or different from a main signal interface (NNI) and processes the CMTS apparatus control signal by itself. When connection of a new ONU is detected by an ONU apparatus... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090103919 - System and method for integrating a fiber optic fixed access network and a fiber optic radio access network: A system and method are described for integrating a fiber optic fixed access network and a fiber optic radio access network. At least one radio unit transmits and receives communications with at least one mobile unit. A first multiplexer transmits and receives the communications with the at least one radio... Agent: Ericsson Inc.

20090103920 - Method and apparatus for transparent ethernet multiplexing and demultiplexing: A method and apparatus for multiplexing multiple Ethernet-based data streams in an optical network reduce the number of optical transceivers required by the optical network. Multiple data streams are multiplexed into a combined data stream, transmitted from a node in the optical network as the combined data stream, and demultiplexed... Agent: Patterson & Sheridan, LLP

20090103921 - Optical receiver systems and methods for polarization demultiplexing, pmd compensation, and dxpsk demodulation: A simplified optical receiver architecture capable of tracking and demultiplexing polarization-multiplexed signals, dynamically compensating for PMD using a variety of polarization controller technologies, and reducing the number of delay line demodulators by two for both DPSK and DQPSK modulation is illustrated. Once polarization is stabilized at the first stage of... Agent: Clements Bernard Miller

20090103922 - Tdm/wdma passive optical network device: Provided is a time division multiplex (TDM)/wavelength division multiple access (WDMA) passive optical network (PON) device. The TDM/WDMA PON device comprises a base station terminal, a wavelength splitter, and a subscriber terminal optical transceiver. The base station terminal comprises a transmitter time-division-multiplexing and simultaneously modulating and outputting a plurality of... Agent: Lahive & Cockfield, LLP Floor 30, Suite 3000

20090103923 - Optical transmitter/receiver module: An optical element mounting substrate where a plurality of light emitting elements have been mounted on the same plane, a lens array for collimating a plurality of light emitted from the plurality of light emitting elements, and a wavelength multiplexing/demultiplexing device are prepared. The wavelength multiplexing/demultiplexing device has typically mounted... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090103924 - Fourth harmonic generating system using optical double side-band suppressed carrier modulator: A fourth harmonic generating system for solving the above problem comprises a first DSB-SC modulator (2) a second DSB-SC modulator (3) and a signal control section (5) for controlling a modulating signal from a signal source (4) for generating modulating signals applied to the first and second DSB-SC modulators (2,3)... Agent: Ostrager Chong Flaherty & Broitman PC

20090103925 - Directional light transmitter and receiver: A system for supplying power wirelessly to a remote mobile device including (i) a transmitting unit for directing radiation into the region of the mobile device, the transmitting unit having a gain medium with a front surface directed towards the space, and a retroreflector on its back surface, and (ii)... Agent: Darby & Darby P.C.

20090103926 - Systems and methods for the integration of framing, oam&p, and forward error correction in sfp optical transceiver devices: The present invention provides systems and methods for integrated framing functionality; optical layer operations, administration, maintenance, and provisioning (OAM&P); forward error correction (FEC); data encapsulation; and performance enhancement support in SFP optical transceiver modules. An SFP pluggable transceiver is configured to frame a client signal and to provide OAM&P functionality,... Agent: Clements Bernard Miller

20090103927 - fiber optic link, a transceiver for use in the link, and methods for designing and constructing fiber optic links and transceivers: A fiber optic link is provided that uses a relatively low-cost transceiver that incorporates relatively inexpensive low bandwidth optical and electrical components to achieve high data rate operations. The data rate of the fiber optic link can be greater than the data rate of the laser of the transceiver provided... Agent: Kathy Manke Avago Technologies Limited

20090103928 - Communicating or reproducing an audible sound: The present invention relates to the communication or reproduction of sound, in particular audible sound. There is provided a method of communicating a sound, including the steps of: transmitting, onto an optical link, pairs of signal copies, the signal copies of a given pair having a time offset relative to... Agent: Nixon & Vanderhye, PC

20090103929 - Synchronous optical bus providing communication between computer system components: A synchronous optical bus system for communication between computer system components is described. In one example, the optical bus system is used for communication between a memory controller and memory devices optically coupled to an optical interconnect. Optical bus interface units couple the components to the optical interconnect and are... Agent: Hewlett Packard Company

20090103930 - Method and system of tracking optical beam shift: An optical interconnect includes an optical transmitter having a plurality of optical sources; a light sensing array configured to receive optical beams emitted from the optical sources; and a beam tracking module in communication with the light sensing array. The beam tracking module is configured to calculate a displacement of... Agent: Hewlett Packard Company

20090103931 - Systems and methods for the coherent non-differential detection of optical communication signals: In various exemplary embodiments, the present invention provides coherent non-differential detection systems and methods for the detection of optical communication signals by the Brillouin fiber amplification of an optical communication signal carrier, the coherent non-differential detection systems including: a Sagnac loop including a single-mode fiber span; a fiber span with... Agent: Clements Bernard Miller

20090103932 - Burst optical receiver with ac coupling and integrator feedback network: A burst optical receiver includes an optical signal inlet, an optical-electrical signal converter, an AC coupling network, an integrator feedback network, and an electrical signal outlet. The AC coupling network is electrically communicated with the optical-electrical signal converter, and blocks the electric signal having the frequency ranges lower than a... Agent: David And Raymond Patent Firm

20090097842 - System and method for sonet equipment fault management: A fiber-optic communications interface (110) and method of operation that operates with a paired fiber-optic communications interface (112) in a redundant communications termination point (101). The fiber-optic communications interface (110) has a paired card interface (122) that exchanges at least a first subset of status data between a local bearer... Agent: Motorola, Inc.

20090097843 - Optical phase modulator with monitoring structure: The invention relates to an optical waveguide device that includes a waveguide phase modulator (WPM). A waveguide monitoring structure is coupled optically in parallel with the WPM so as to form a Mach-Zehnder interferometer therewith for producing monitor light indicative of a phase shift imparted by the WPM. The waveguide... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20090097844 - Sensing a disturbance: The present invention relates to a method of sensing a disturbance along an optical link including the steps of: using a first interferometer arrangement connected to an optical source so as to generate pairs of signal copies, which signal copies of a given pair are temporally delayed relative to one... Agent: Nixon & Vanderhye, PC

20090097845 - Network termination apparatus: Apparatus for connecting telecommunications equipment of premises to a telecommunications network, the apparatus comprising a first module associated with the telecommunications equipment, a second module associated with the telecommunications network, the first module connectable to the second module by a telecommunications link, and access means permitting access to only one... Agent: Nixon & Vanderhye, PC

20090097846 - Rfid systems and methods for optical fiber network deployment and maintenance: An optical-fiber-network (OFN) radio-frequency identification (RFID) system for deploying and/or maintaining and/or provisioning service and/or locating faults in an OFN. The system includes a plurality of OFN components, and at least one RFID tag that includes RFID tag data that has at least one property of the OFN component associated... Agent: Corning Incorporated

20090097847 - Optical module: An optical module comprising: a submount provided on a CAN stem; light-emitting device and a light-receiving device; a CAN cap or package; and an optical multiplexer/demultiplexer having a wavelength selective filter on a substrate that has transmissivity to passing light and a mirror, where an extending direction of the optical... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20090097848 - Sharing value of network variables with successively active interfaces of a communication node: A method includes storing a value of shared variables from an active member of a plurality of packet-to-tdm interfaces. Another member of the plurality of packet-to-tdm interfaces is selected to become active. The value of shared variables is provided to the selected member.... Agent: Davis & Associates

20090097849 - Performance optimized receiver with bandwidth adaptive optical filter for high speed long haul wdm systems: The present invention provides a performance optimized receiver with a bandwidth adaptive optical filter for high speed long haul wavelength division multiplexed systems, such as 40 Gb/s and 100 Gb/s wavelength division multiplexed systems. The performance optimized receiver includes: a bandwidth and wavelength tunable optical filter, wherein the bandwidth and... Agent: Clements Bernard Miller

20090097850 - Optical communications system: In an optical communications link, an optical system including: at least a first input port for delivering an optical signal travelling in the communications link, the optical signal including a plurality of wavelength channels, the channels being utilized for carrying optical information over an optical data link; a dispersive element... Agent: Rauschenbach Patent Law Group, LLC

20090097851 - Optical interconnect system providing communication between computer system components: An optical interconnect system for communication between computer system components is described. The system includes an optical data communication path and a plurality of optical taps, each optical tap optically coupling a respective computer system component to the optical data communication path. Each optical tap splits power from an optical... Agent: Hewlett Packard Company

20090097852 - 10 gbps ofdma-pon: A method for generating transparent pipes for heterogeneous service transmission via OFDMA-PON. In an exemplary embodiment, dedicated sub-channels, which are composed of one or more subcarriers—are used as a “transparent pipe” for delivery of arbitrary analog or digital signals for both circuit switched and packet switched systems.... Agent: Brosemer, Kolefas & Associates, LLC (necl)

20090097854 - Optical signal processing apparatus: An O/E conversion element converts an input NRZ optical signal into an electric signal. A clock recovery circuit recovers a clock signal from the electric signal obtained by the O/E conversion element. A phase modulator applies phase modulation to the NRZ optical signal, using the recovered clock signal. An intensity... Agent: Staas & Halsey LLP

20090097853 - Sharing value of network variables with successively active interfaces of a communication node: A method includes storing a value of shared variables from a first active packet-to-tdm interface. The value of the shared variables is provided to a successor active packet-to-tdm interface.... Agent: Davis & Associates

20090097855 - Hybrid wireless/wired rof transponder and hybrid rof communication system using same: A radio-over-fiber (RoF) hybrid wired/wireless transponder is disclosed that is configured to provide both wireless and wired communication between a hybrid head-end and one or more client devices. The hybrid transponder includes optical-to-electrical (O/E) and electrical-to-optical (E/O) conversion capability and is configured to frequency multiplex/demultiplex electrical “wired” signals and electrical... Agent: Corning Incorporated

20090097856 - Receiver apparatus for use in optical space transmission system: There included are a plurality of light receiving sections (121, 122) for receiving a plurality of optical signals (R1, R2) and respectively converting the received optical signals to a plurality of electrical signals (r1, r2); a first calculating section (130) for subjecting the plurality of electrical signals (r1, r2) to... Agent: Wenderoth, Lind & Ponack L.L.P.

20090097857 - Downhole optical communication system and method: Disclosed herein is a downhole optical communication system. The system includes, at least one optical transmitter and at least one optical receiver. The at least one optical receiver is in operable communication with the at least one optical transmitter such that wellbore fluid is passable between the at least one... Agent: Cantor Colburn, LLP

20090097858 - Optical data transceivers: An optical data transceiver is manufactured by forming an integrated control circuit (101) on a suitable substrate, such as a silicon wafer, and then mounting said integrated circuit (101) onto the lead frame (102). Electrical connections may then be made between said integrated circuit (101) and said lead frame (102).... Agent: Townsend And Townsend And Crew, LLP

20090097859 - Emitter, converter, and display system using same: A display system includes an emitter and a converter. The emitter is used for emitting invisible light rays carrying to-be-displayed information. The converter is used for receiving the invisible light rays and converting the invisible light rays to be visible light rays, and emitting the visible light rays carrying the... Agent: PCe Industry, Inc. Att. Steven Reiss

20090097860 - Optical dispersion compensation: A method of providing dispersion compensation includes providing a dispersion signal indicative of an amount of dispersion for at least one channel of a multi-channel optical signal. A dispersion compensator is controlled in accordance with the dispersion signal to optically compensate for the dispersion of the optical signal.... Agent: Davis & Associates

20090097861 - Passive optical network system and optical line terminating apparatus: A passive optical network (PON) system which enables plural types of ONUs having different signal transmission speeds to be connected to one OLT. An optical line terminating apparatus (OLT) connected to plural types of ONUs having different signal transmission speeds through an optical distribution network includes an optical transmitter-receiver connected... Agent: Stanley P. Fisher Reed Smith LLP

20090097862 - Quantum repeater: A quantum repeater includes a transmitter portion including a source, a set of matter systems, and an optical system. The source produces a probe pulse in a probe state having components with different photon numbers, and each matter system has at least one state that interacts with photons in the... Agent: Hewlett Packard Company

20090097863 - Optical transmitter with a chirp managed laser diode automatically adjusting emission wavelength thereof and its adjusting method: An optical transmitter using a chirp managed laser is disclosed. The optical transmitter compares, in advance to the ATC operation, the phases of the signal corresponding to the original output of the LD and the signal corresponding to that reflected by the filter. When the two signals are in phase,... Agent: Venable LLP

20090097864 - Systems and methods for phase control for rz-dqpsk modulation: RZ-DQPSK (Return-to-Zero Differential Quadrature Phase Shift Keying) systems and methods are provided with a single real-time phase alignment mechanism. The present invention eliminates the requirement for phase adjustment between a carver modulator and a DQPSK modulator. In an exemplary embodiment, the present invention replaces the carver modulator with AND gates... Agent: Clements Bernard Miller

20090097865 - Method and system for a narrowband, non-linear optoelectronic receiver: Methods and systems for a narrowband, non-linear optoelectronic receiver are disclosed and may include amplifying a received signal, limiting a bandwidth of the received signal, and restoring the signal utilizing a level restorer, which may include a non-return to zero (NRZ) level restorer. The NRZ level restorer may include a... Agent: Mcandrews Held & Malloy, Ltd

20090097866 - Optical receiving device and optical transmission system: According to an aspect of an embodiment, an apparatus includes: a wavelength-to-transmission quality characteristic obtaining unit for obtaining a wavelength-to-transmission quality characteristic; a residual dispersion-to-transmission quality characteristic saving unit for saving a residual dispersion-to-transmission quality characteristic; a wavelength-to-residual dispersion characteristic generating unit for generating a wavelength-to-residual dispersion characteristic from a... Agent: Fujitsu Patent Center C/o Cpa Global

20090097867 - Optical receiver using mach-zehnder interferometer: A transmittance detecting circuit and a minute modulation signal detecting circuit are provided in parallel after a balanced optical receiver, and a switch is selectively connectable either a minute modulation signal detecting circuit and a transmittance detecting circuit. In the initial stage of frequency pull-in, the switch is set to... Agent: Miles & Stockbridge PC

20090092388 - Method, optical network and network device for locating fiber events: A method for locating fiber events and an optical network and network device are provided. The method for locating fiber events includes: determining the distance between an event and an OLT, measuring the optical loss of the optical channel between the OLT and an ONU or ONT at the peer... Agent: Brinks Hofer Gilson & Lione

20090092389 - Orthogonal frequency division multiple access based optical ring network: A fiber optic network transmits data between a hub node and a plurality of local nodes connected by at least one unidirectional fiber ring. Downstream data streams are carried on wavelength-division-multiplexed optical carriers from the hub node to the local nodes. An optical carrier corresponding to a specific wavelength carries... Agent: Nec Laboratories America, Inc.

20090092390 - Wavelength-division multiplexed passive optical network for embodying wavelength-independent operation of wavelength-locked fabry-perot laser diodes by injecting a low noise broadband light source: The present invention relates to a wavelength-division multiplexed passive optical network (WDM-PON) which embodies wavelength-independence of wavelength-locked Fabry Perot-Laser Diode (F-P LD). A WDM-PON of the present invention comprises an optical fiber being used for optical transmission to and from a broadband light source (BLS) with a low noise characteristic;... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090092393 - Coherent optical orthogonal frequency division multiplexing (ofdm) reception using self optical carrier extraction: A method includes producing interference between a received optical OFDM signal and an optical carrier extracted from the received optical OFDM signal to provide optical coherent detection of the received optical OFDM signal. Preferably, producing the interference includes optically splitting the received optical OFDM signal into a first part that... Agent: Nec Laboratories America, Inc.

20090092391 - Method and system for power stability control in wavelength division multiplexing networks: Methods and systems for controlling power fluctuations in a network including a plurality of nodes are disclosed. A node in the network may be configured to modify power levels in accordance with either an active state or an inactive state. The node may transition to an inactive state in response... Agent: Nec Laboratories America, Inc.

20090092394 - Orthogonal frequency division multiple access based virtual passive optical network (vpon): Various types of passive optical networks operate simultaneously in one passive optical network system comprising an optical line terminal, a passive remote node, and multiple optical network units. Downstream data is orthogonal frequency division multiplexed onto a single wavelength optical carrier transmitted on a primary downstream optical beam from the... Agent: Nec Laboratories America, Inc.

20090092395 - Upgraded optical communication system with increased transmission capacity and method: A method for upgrading a wavelength division multiplex (WDM) optical communication system includes replacing an installed transmitter operable to transmit a data stream at a defined bit rate with a return-to-zero M-ary phased shift keying (RZ-mPSK) transmitter operable to transmit the data stream at the defined bit rate and at... Agent: Baker Botts L.L.P.

20090092392 - Virtual i/q multiplexing in optical code division for secure local area ofdm: A system and method for virtual I/Q multiplexing in optical code division for secure local area OFDM includes encoding a wide spectrum signal, which includes a plurality of spectral bins, to provide a complementary spectral coding over at least two channels. The complementary spectral codings are intensity modulated with opposite... Agent: Nec Laboratories America, Inc.

20090092396 - Adaptable duobinary generating filters, transmitters, systems and methods: A variety of adaptable electronic duobinary generating filters to be used in communication systems are provided, each filter generating an adaptable electronic duobinay signal which is optimized for system impairments. According to one exemplary implementation, an adaptable electronic duobinary generating filter comprises an adaptable delay-and-add circuit, having an adaptable electronic... Agent: Infinera Corporation

20090092397 - Wireless remote control device, bridge device and wireless remote control system: A wireless remote control device of the present invention includes not only an infrared-transmitting section that transmits operational information to the outside so as to remotely control a predetermined electronic device but also a radio-wave-transmitting section that transmits information to the outside through the use of radio waves as a... Agent: Nixon & Vanderhye, PC

20090092398 - Data signal isolation apparatus: Data signal isolation apparatus comprising a first media converter adapted to convert outgoing electrical data signals into outgoing optical data signals, an optical data signal transmission means adapted to transmit said outgoing optical data signals, a second media converter adapted to convert said outgoing optical data signals back into outgoing... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20090092399 - Monolithic shell for an optical electrical device: An optoelectronic transceiver module. The optoelectronic module is a monolithic, one-piece module shell that includes a top portion, a bottom portion, a first side portion, a second side portion, and a front portion. The top portion, bottom portion, first side portion, second side portion and the front portion define a... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090092400 - Light source in optical transmission system, waveform shaper, optical pulse train generator and optical reproduction system: The present invention provides a pulse train generator comprising: a dual-frequency signal light source for generating a dual-frequency signal; a soliton shaper for soliton-shaping output light from the dual-frequency signal light source; and an adiabatic soliton compressor for performing adiabatic soliton compression on output light from the soliton shaper, and... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090092401 - Quaternary phase modulator: In a quaternary phase modulator including two phase modulators disposed in parallel and a phase adjuster that adjusts a phase difference when the outputs of the two phase modulators are combined, there are provided a second light source that introduces light propagated in a backward direction, a first controller that... Agent: Reed Smith LLP

20090087178 - Self-contained secure videoconferencing console: Disclosed is a secure/non-secure bypass switch, including at least one input port for receiving signals; a control module for determining if a secure or a non-secure operating mode is selected; if a non-secure mode is selected, configuring at least one relay to route the signals through at least two fiber... Agent: The Farrell Law Firm, P.C.

20090087179 - Multi-interface protocol analysis system: A device may include a first network module to capture network data at a first location in a network and a second network module to capture network data at a second location in the network different from the first location in the network. The device may include a control module... Agent: Verizon Patent Management Group

20090087180 - Wavelength assignment optimization: A method may include inputting parameters that characterize an optical network, inputting one or more demands to be routed, selecting routes, wavelengths, and wavelength translation nodes simultaneously for the one or more demands of the optical network based on the parameters, where each demand includes a working path and one... Agent: Verizon Patent Management Group

20090087181 - In-wall optical network unit: One embodiment provides an ONU that includes an optical interface coupled to an optical transceiver, which is configured to transmit optical signals to and receive optical signals from an OLT through the optical interface. The ONU also includes an ONU chip coupled to the optical transceiver and configured to communicate... Agent: Park, Vaughan & Fleming LLP

20090087182 - Wavelength division multiplex (wdm) optical network: A wavelength division multiplex (WDM) optical network comprises a ring configuration of optical fiber links connecting a plurality of nodes and add and drop filters at each node connected in series within the ring. One or more of the filters are arranged to add or drop at least two selected... Agent: Kirschstein, Israel, Schiffmiller & Pieroni, P.C.

20090087184 - Method, system and apparatus for distributing node information: A method for distributing node information, including an optical node generating an information bit stream based on its own node information and distributing the information bit stream it generates and a wavelength sequence corresponding to the node information. According to various embodiments, an information bit stream is generated based on... Agent: Harness, Dickey & Pierce, P.L.C

20090087185 - Optical transmission apparatus and control method therefor: An optical transmission apparatus comprising a first detector for detecting the power of the supervisory signal light separated from received wavelength-division multiplexed signal lights; a second detector for detecting the power of the wavelength-division multiplexed signal lights after the separation of the supervisory signal light; a gain-controlled type optical amplifier... Agent: Mcdermott Will & Emery LLP

20090087183 - Wavelength division multiplexing serial video signals over optical interfaces using the xfp form factor: Certain pins of an XFP connector are re-purposed to enable the connector to receive, for example, four 11.88 Gb/s serial data streams (for a receiver), or output four 11.88 Gb/s serial data streams (for a transmitter). The four data streams are wavelength division multiplexed inside the XFP module for transmission... Agent: Patent Group 2n Jones Day

20090087186 - Time-multiplexed optical waveform generation: A time-multiplexed waveform generator includes a wavelength splitter that receives an input optical signal and spectrally separates the input optical signal into a plurality of frequency components. A plurality of intensity modulators receives each of the frequency components and passes each of the frequency components for a selective time period,... Agent: Gauthier & Connors, LLP

20090087187 - Method for transmitting optically transmitted data via a radio antenna and corresponding device: In a method a carrier signal is modulated depending on data to be transmitted. The modulated carrier signal is transmitted via an optical fiber line. The transmitted modulated carrier signal is demodulated, thereby producing received data. The transmitted modulated carrier signal is used to produce an auxiliary carrier signal. Said... Agent: Staas & Halsey LLP

20090087188 - Compact optical transceivers including thermal distributing and electromagnetic shielding systems and methods therefor: An optical transceiver includes structures that define an electrical connector port for allowing connection of an electrical connector to an optical subassembly of the transceiver, and structures that define a vent surrounding at least portions of the connector port, whereby the vent allows bidirectional passage of air therethrough. Included in... Agent: Ibm Corporation RochesterIPLaw Dept. 917

20090087189 - Non-interfering transmitted-beam pairs: Embodiments include apparatus, methods, and system including an apparatus comprising a photo receiver operable to detect a stream of light pulses transmitted from a photo transmitter paired with the photo receiver, wherein a frequency of the stream of light pulses has a harmonic relationship with a frequency of at least... Agent: Rockwell Automation, Inc. Attention: Susan M. Donahue

20090087190 - Optical communications: A dispersion management system for soliton or soliton-like transmission systems comprises a length of optical fibre (L) in which a plurality of sections (l) made up of components (N, A) of opposite sign dispersions are concatenated together. The duration of the dispersion compensation phase is short in comparison with the... Agent: Cooley Godward Kronish LLP Attn: Patent Group

20090087191 - Color sensors using polarimetric techniques: Embodiments include n apparatus including a color sensor including a transmitter portion and a receiver portion, the transmitter portion including a light source operable to generate and transmit a light having a particular range of wavelengths, the receiver portion including a first detector operable to receive a first portion of... Agent: Rockwell Automation, Inc. Attention: Susan M. Donahue

20090087192 - Near infrared sensor system with nano-imprinted wire-grid polarizers and method: Example embodiments of a near-Infrared (NIR) sensor system and methods for detecting changes in polarization are generally described herein. Other example embodiments may be described and claimed. In some example embodiments, the sensor system includes a transmit optical element to transmit optical signals with a polarization, and a receive optical... Agent: Rockwell Automation, Inc./(slwk)

20090087193 - Polarization mode dispersion compensation: Methods and systems for PMD compensation in an optical communication system are implemented by transmitting multiple optical signals through a common optical conduit to an optical compensator that adjustably rotates the polarization states of the multiple optical signals and transmits the rotated optical signals to an optical receiver. The receiver,... Agent: At&t Corp.

20090087194 - Optical transmission system and optical transmission method: An optical transmission system, where in an optical transmitter a detection bit having a specific pattern set according to the number of bits to be transmitted within one symbol time, is imparted with respect to a transmission signal in which transmission information has been encoded according to a preset format,... Agent: Staas & Halsey LLP

20090087195 - Method and device for starting up an optical transmission link: in the n-th execution of the step (c) (ii) if another received pulse (P(n+1)R,#2) is received and answered with another transmit pulse (P(n+1)T,#2), then the transmission is activated in the direction toward the other end point of the transmission link at the end of the startup mode after a given... Agent: The Culbertson Group, P.C.

20090087196 - Method and system for split voltage domain transmitter circuits: Methods and systems for split voltage domain transmitter circuits are disclosed and may include amplifying a received signal in a plurality of partial voltage domains. Each of the partial voltage domains may be offset by a DC voltage from the other partial voltage domains. A sum of the plurality of... Agent: Mcandrews Held & Malloy, Ltd

20090087197 - Method and system for split voltage domain receiver circuits: Methods and systems for split voltage domain receiver circuits are disclosed and may include amplifying complementary received signals in a plurality of partial voltage domains. The signals may be combined into a single differential signal in a single voltage domain. Each of the partial voltage domains may be offset by... Agent: Mcandrews Held & Malloy, Ltd