Optical communications inventions 09/08

20080232794 - Pon with distributed virtual port loopback: A passive optical network (PON) access network connected to an external data network can be tested using a remote test host operating on the external data network by looping test data from the test host through the PON to an Optical Network Terminator (ONT), through a data path between an... Agent: Alcatel Lucent Intellectual Property & Standards

20080232795 - Method and system for localizing an attenuation change location in an optical waveguide: The invention provides a method and a system for localizing an attenuation change location in an optical waveguide, wherein the attenuation change location can be determined depending on a time difference (ΔT) between signal power change instants of optical signals having different wavelengths (λ1, λ2) that are transmitted via the... Agent: Greenblum & Bernstein, P.L.C

20080232796 - Optical signal monitoring system and optical signal monitoring method: An optical signal monitoring system includes a bit rate information collecting unit and a monitoring unit. The bit rate information collecting unit gets bit rate information indicating a bit rate of an optical signal passing through an optical communication path. The monitoring unit extracts a monitoring optical signal from the... Agent: Nec Corporation Of America

20080232797 - Method of controlling optical amplifier located along an optical link: The invention concerns shutting down and restarting optical amplifiers, such as Raman amplifiers, in an optical link, depending whether the optical amplifier is a transmitting side amplifier or a receiving side amplifier. For controlling the amplifiers, at least one diagnostic signal is to be transmitted via an auxiliary optical channel... Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw

20080232798 - Loss-of-light detecting apparatus: According to an aspect of an embodiment, an apparatus comprises: a correction level calculating unit that calculates a correction level, which is the input light level necessary to meet an optical signal-to-noise ratio at the maximum level of an optical noise signal; a loss-of-light detection threshold-value setting unit that compares... Agent: Staas & Halsey LLP

20080232799 - Method and apparatus for duplex communication in hybrid fiber-radio systems: An apparatus and method for enabling cost-effective duplex communication by diplexing one of down stream signals for frequency up-conversion in a hybrid fiber-radio system includes diplexing an unmodulated mode signal among beating signals between a master laser and an injection-locked slave laser and using the diplexed signal for down-conversion in... Agent: Lee & Morse, P.C.

20080232800 - Method and apparatus for switching optical wavelengths: An example embodiment of the present invention is a non-blocking wavelength switching architecture that enables graceful scaling of a network wavelength switching node from small to large fiber counts using fixed size bidirectional 1×N Wavelength Selective Switches (WSS). The architecture uses an intermediate broadcast and select layer implemented using optical... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20080232801 - Method and system for transporting docsis communication signals over a passive optical network: A translation agent adapts DOCSIS information, primarily QoS information, for transmission over a PON. The agent places into an IP address field of a DHCP message the MAC address of an ONU associated with a CPE device attempting to register with a CMTS. The translation agent intercepts DHCP reply messages... Agent: Arris International, Inc

20080232803 - Hybrid optical network and a method of routing data packets in a hybrid optical network: A hybrid optical network comprising a single channel optical ring network with a plurality of ring nodes and a star subnetwork. The star subnetwork comprises a central wavelength router, a plurality of combiners being connected to input ports of the central wavelength router, and a subset of the ring nodes... Agent: Workman Nydegger

20080232802 - Method for protecting cross-ring service in optical network: A method for protecting a cross-ring service in an optical network includes the steps of: determining whether a configured working path crosses different rings; and in the case that the working path crosses different rings, establishing a cross-ring protection path which bypasses an off-ring node or an on-ring node of... Agent: Fulbright & Jaworski L.l.p

20080232804 - Pon with protected cross-connect forwarding: Redundancy is provided in a passive optical network (PON) to protect against network malfunctions or provide other benefits. The Optical Line Terminal (OLT) that couples an external network to the PON routes network traffic via one or, alternatively, both of two paths or links between the OLT and a subscriber... Agent: Gardner Groff Greenwald And Villanueva, PC

20080232806 - Transponder unit, transponder unit control apparatus, transponder unit control method and recording medium recording transponder unit control program: A transponder includes a CDR section that extracts clocks from an input signal, an oscillating section that can output various frequencies to the CDR section, a frequency instruction processing section that instructs the oscillating section to output an arbitrary frequency, a detection processing section, and a frame processing section control... Agent: Staas & Halsey LLP

20080232805 - Wavelength-tunable light source and wavelength-division multiplexed transmission system using the source: t

20080232807 - Wavelength division multiplexed-passive optical network capable of high-speed transmission of an optical signal by using modulation format having high spectral efficiency: The present invention discloses a wavelength-division multiplexing passive optical network (WDM-PON) capable of high-bandwidth transmission for optical signals by using modulation format having high spectral efficiency. The WDM-PON according to the present invention provides a larger capacity and higher bandwidth transmission economically (at lower costs) by using a modulation format... Agent: Wolf, Block, Schorr & Solis-cohen LLP

20080232808 - Optical waveform controlling apparatus: According to an aspect of an embodiment, an apparatus for controlling optical waveform, comprises: an input port for inputting a signal light having a modulating frequency and a signal light power; a pump light generator generating pulsed pump light having a frequency higher than the modulating frequency of the signal... Agent: Hanify & King Professional Corporation

20080232809 - Virtual burst-switching networks: A time-shared network comprising edge nodes and optical core nodes may be dynamically divided into several embedded networks, each of which covering selected edge nodes. At least one of the edge nodes may host an embedded-network controller operable to form multiple-source flow-rate allocation requests each of the requests specifying flow-rate... Agent: Anderson Gorecki & Manaras LLP

20080232810 - Bluetooth-enabled infrared remote control: A Bluetooth-enabled infrared (IR) remote control is disclosed, which comprises: a micro control unit, for executing operations of signal processing, decoding and encoding; an signal amplifying circuit, for amplifying a control signal being issued and coded by the micro control unit to be used for controlling a corresponding function of... Agent: Wpat, PC

20080232811 - Infrared remote control system and method: Disclosed is a remote control device for causing operation of a function on at least one of a plurality of different remotely controlled devices. The device includes a randomizer that determines a random local address for the remote control device. The device also includes a modulated optical transmitter that emits... Agent: Nath & Associates

20080232812 - Optical communication device: An optical communication device includes a top cover, a bottom cover, a circuit board and an electrostatic discharge element. The bottom cover is disposed opposite to the top cover, and an accommodating space is formed between the top and bottom covers. The circuit board is disposed in the accommodating space.... Agent: Birch Stewart Kolasch & Birch

20080232814 - Quantum communication apparatus and quantum communication method: A quantum communication apparatus is used in operations to generate entanglement between the two physical system ensembles and operations to extend the distance between entangled ensembles by connecting pairs of entangled ensembles. The apparatus uses only passive elements without any actuating parts, active devices having no mechanically actuating parts, such... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080232813 - Transceiver for optical transmission and transmission method for the same: The present invention provides a transceiver for optical transmission in which noise can be sufficiently suppressed and a method for the same using a simple configuration. The transceiver includes an optical transmitter module in which a low frequency obtained by boosting and filtering a power-source voltage is superimposed onto and... Agent: Nec Corporation Of America

20080232815 - Dpsk modulation-demodulation method, and optical communication device and optical communication system using the same: In the optical communication device and the optical communication system using DPSK modulation whose cost is low, whose size is small and whose power consumption is low, the N:1 multiplexer 125 generates a serial signal by multiplexing a parallel signal coded by the DPSK modulation coding units 115˜117 bit by... Agent: Sughrue Mion, PLLC

20080232816 - Polarization-multiplexing optical transmitter polarization-multiplexing optical receiver, polarization-multiplexing optical transceiving system, and controlling method thereof: By using low-frequency signals, an optical transmitting unit modulates one of a wavelength, a transmission timing, and an intensity of light as a carrier wave. A polarization multiplexer synthesizes the output light signals, modulated by the optical transmitting unit, in polarization states orthogonal to each other and generates polarization-multiplexing signals.... Agent: Staas & Halsey LLP

20080232817 - Waveform shaping apparatus, optical transmission system, and waveform shaping method: A waveform shaping apparatus includes a quantum dot optical amplifier in which an amplification factor of input signal beams saturates if the optical power of the signal beams is equal to or greater than a predetermined value; and a quantum dot saturable absorber in which an absorption factor of the... Agent: Staas & Halsey LLP

20080232818 - Interface board and optical transmission equipment: A circuit capable of processing signals of different signal types is provided for identifying the signal type by the signal type setting from an administrator or by the implementation of the optical module, thereby selecting a signal processor to be used. An OTN frame standardized by ITU is used in... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20080232819 - Pon system and optical network unit connecting method: In a passive optical network system, upon detecting a connection with one of a plurality of optical network units at the time of performing autonomous ranging, an optical line termination requests for subscriber recognition information from the connected optical network unit, searches a database, to thereby specify the subscriber and... Agent: Birch Stewart Kolasch & Birch

20080232820 - Optical vector modulator: An optical vector modulator includes an information generator that generates a plurality of N-bit streams at an output where each of the plurality of N-bit streams represents a desired modulation point in a signaling constellation. A memory look-up table having an N-bit address input retrieves a first and a second... Agent: Rauschenbach Patent Law Group, LLC

20080232822 - Optical receiver: The present invention provides an optical receiver that suppresses the saturation in the output without alleviating the bandwidth restriction of the current-to-voltage conversion gain. This optical receiver comprises an amplifier 4 for receiving a photocurrent IIN from a photodiode, and a plurality of trans-impedance elements connected in parallel between the... Agent: Smith, Gambrell & Russell

20080232821 - Optical receiver having transfer function bandwidth selection: An optical receiver apparatus and methods for mitigating intersymbol interference (ISI) in a differentially-encoded modulation transmission system by controlling constructive and destructive transfer functions. The receiver includes a bandwidth control element for controlling transfer function bandwidth, a transfer phase controller for controlling transfer function phase and/or an imbalancer for imbalancing... Agent: Fish & Richardson, PC

20080232823 - Coherent optical communication apparatus and method: The present invention relates to a coherent optical communication apparatus and method. According to the invention, the optical communication apparatus receives a modulated optical signal, which is generated by modulating an optical signal with a first electrical signal obtained by adding a second electrical signal carrying information to be transmitted... Agent: Oliff & Berridge, PLC

20080232824 - Optical receiver scheme with all-optical decision element: A receiver scheme (10) for optical signals in Return-to-zero (RZ) systems comprises a conventional receiver (11) at the input of which is placed an all-optical decision element (12) realized with nonlinear optical elements. This allows obtaining a substantial increase in performance compared with a simple conventional receiver optimised for NRZ... Agent: Coats & Bennett, PLLC

20080226287 - Method and apparatus for restoration of operating conditions of an optical ring network comprising a plurality of optical amplifiers after a break or other fault in the ring network: A method and apparatus for restoration of operating conditions of a WDM optical ring network comprising a plurality of amplifiers linked together in a ring after a break or fault has occurred in the network. The method comprises in response to repair of the break or other fault, increasing output... Agent: Coats & Bennett, PLLC

20080226288 - Method and apparatus for performing receiver sensitivity testing and stressed receive sensitivity testing in a transceiver: An apparatus and method are provided for use in a transceiver that enable the transceiver to test itself to determine whether the receiver portion of the transceiver meets receiver sensitivity requirements and stressed receive sensitivity requirements.... Agent: Kathy Manke Avago Technologies Limited

20080226289 - Optical device testing: In one embodiment, an apparatus comprises a pattern generator to generate a test bit pattern in an electrical signal, an optical transponder to covert the electrical signal to an optical signal, transmit the optical signal to a device, and receive a processed test bit pattern from the device, and an... Agent: Caven & Aghevli C/o Intellevate, LLC

20080226291 - Optical receiving apparatus and optical level adjusted quantity setting method therefor: The present invention relates to an optical receiving apparatus designed to receive light wavelength-demultiplexed in a wavelength multiplex optical transmission system. The optical receiving apparatus includes an optical level adjusting unit for adjusting a level of light inputted and for outputting the level-adjusted light and a light receiving unit for... Agent: Staas & Halsey LLP

20080226290 - Optical signal monitoring apparatus, optical system and optical signal monitoring method: By reducing the number of PD arrays, and by simplifying the configuration of an optical power monitor in a WDM system, a miniaturized, cost reduced optical signal monitoring apparatus, optical system or optical signal monitoring method is provided. An optical power monitor 1 has an optical switch 30 having four... Agent: Workman Nydegger

20080226292 - Method and processing device for transmitting ethernet service signals in wavelength division multiplexing networks: Disclosed is a method for transmitting Ethernet service signals in a Wavelength Division Multiplexing (WDM) network, including: a Center receiving Ethernet service signals and transmitting the signals to a transmission channel; a receiving station receives the Ethernet service signals, performs a space-division cross operation upon the received signals, duplicates the... Agent: Marshall, Gerstein & Borun LLP

20080226293 - Communication system, terminating apparatus, and pon virtualization method for use therein: When a frame is received from one of PON ports 12a to 12c of ONUs 1a to 1c, an OLT 3 compares VPIDs contained in Preamble/SFD regions A of the received Ethernet® frame with VPIDs assigned to LAN ports 31 and 32 of the OLT 3. Upon coincidence, a PON... Agent: Nec Corporation Of America

20080226294 - Passive optical network system and method of data transmission in the passive optical network: Regarding the passive optical network (PON) system of the present invention, in an OLT, data of different bit rates is framed, and framed data rows are subjected to FEC encoding processing without changing the line up of the data, and a check bit is added to the end of the... Agent: Staas & Halsey LLP

20080226295 - Light modulating apparatus: A light modulating apparatus which is to be used in a transmission system using wavelength division multiplexing has: a signal generating section for producing a transmission signal and the like; a first light modulating section for modulating light emitted from a light source, on the basis of the transmission signal;... Agent: Sughrue-265550

20080226296 - Optical transmitter with suppressing wavelength deviation at begging of operation: An optical transmitter is disclosed in which the wavelength deviation occurred at the turning on from the disabled state to the enabled state by the negating of the Tx_Disable command is suppressed. The optical transmitter includes a semiconductor laser diode (LD) and an automatic temperature controller (ATC) circuit to drive... Agent: Smith, Gambrell & Russell

20080226297 - Optical fiber paper reader: Techniques for authenticating certificates of authenticity (COAs) are discussed. The techniques provide for a simplified authentication system that is easily utilized in a field setting. In described embodiments, COAs are attached to or otherwise associated with goods to be authenticated. The COAs incorporate random or pseudo-random arrangements of optically sensitive... Agent: Lee & Hayes PLLC

20080226298 - Optical transmission system: The present invention has been achieved to provide a novel optical transmission system realizing high-speed optical transmission over greater distance by suppressing waveform degradation caused by mode dispersion and mode transition in a multimode optical transmission line. The optical transmission system of the present invention includes: an optical transmitter for... Agent: Hogan & Hartson L.L.P.

20080226299 - Optical transmission apparatus: An optical transmission apparatus includes redundant line cards each having a plurality of ports, a hardware unit and a CPU. The hardware unit obtains failure information on redundant lines for each port. The CPU determines switching control of the redundant lines based on the failure information. Then, the hardware unit... Agent: Katten Muchin Rosenman LLP

20080226300 - Optical differential-phase-shift-keyed demodulator apparatus and method: A system and method for demodulating an optical differential-phase-shift-keyed (DPSK) input signal using a Fabray-Perot etalon filter. In one embodiment the system receives a transmitted wavefront from the etalon filter and uses a detector to generate an electrical waveform from the transmitted wavefront. A comparator is used to receive an... Agent: Harness, Dickey & Pierce, P.L.C

20080226301 - System and method for increasing spectral efficiency, capacity and/or dispersion-limited reach of modulated signals in communication links: A system and method for increasing spectral efficiency, capacity and/or extending dispersion-limited reach in a communication link employs narrow filtering of a baseband signal to reduce the original bandwidth to a substantially smaller bandwidth for transmission across a transmission medium such as an optical fiber. By restricting the bandwidth, the... Agent: Procopio, Cory, Hargreaves & Savitch LLP

20080226302 - Chromatic dispersion compensation system and method: Dispersion compensation is provided in an optical transmission system. An optical line couples first and second transceivers, and a plurality of amplifiers coupled to the optical line are spaced throughout the optical line with variable span distances. A plurality of dispersion compensation modules include a coarse granularity fiber, a connector,... Agent: Woodcock Washburn LLP

20080226303 - Dispersion-managed optical transmission system: An optical transmission system that alleviates waveform distortions due to nonlinear effects in fibers. A transmitter sends WDM signals to a receiver over a dispersion-managed optical transmission line with in-line optical repeaters. The transmission line is divided into a plurality of dispersion compensation intervals each composed of a main segment... Agent: Staas & Halsey LLP

20080226304 - Optical transmission apparatus: An optical transmission apparatus includes redundant line cards each installed with hardware and a CPU. The hardware obtains failure information on redundant lines including a working line and a protection line, and the CPU determines switching control of the redundant lines based on the obtained failure information. Further, the hardware... Agent: Katten Muchin Rosenman LLP

20080226305 - Integrated optical waveform modulator: A method of modulating an optical carrier. A target carrier modulation is computed based on an input data signal. An effective length of an optical modulator is then controlled based on the target carrier modulation.... Agent: Guerin & Rodriguez, LLP

20080226306 - Gt decoder having bandwidth control for isi compensation: An optical receiver apparatus and methods for mitigating intersymbol interference (ISI) in a differentially-encoded modulation transmission system by controlling constructive and destructive transfer functions. The receiver includes a bandwidth control element for controlling transfer function bandwidth, a transfer phase controller for controlling transfer function phase and/or an imbalancer for imbalancing... Agent: Fish & Richardson, PC

20080226307 - Methods and systems for monitoring multiple optical signals from a single source: Methods and systems for monitoring a plurality of different optical signals from a single source of such signals, where each such different optical signal is spatially separated from other such signals and directed to different detectors or locations upon a single detector, which direction is generally accomplished through the use... Agent: Morgan, Lewis & Bockius LLP (sf)

20080219660 - Communicating information: The present invention relates to the communication of information where the information is introduced at a plurality of spaced apart locations onto an optical waveguide. The following steps are performed: (i) transmitting test signals onto the waveguide, components of the test signals being returned in a distributed manner along the... Agent: Nixon & Vanderhye, Pc

20080219661 - Digital cros-connect: A digital cross-connect (DXC) (10) comprises: a plurality of ports (30-100) for receiving/outputting signals and switching and switching means (20) for selectively cross-connecting signals applied to one port to one or more other ports. The cross-connect (10) is characterized in that the switching means (20) comprises a single switching matrix... Agent: Kirschstein, Ottinger, Israel & Schiffmiller, P.c.

20080219662 - Monolithically integrated reconfigurable optical add-drop multiplexer: A reconfigurable optical add-drop mulitplexer comprises a first waveguide layer having formed therein a first multiplexer-demultiplexer, a second multiplexer-demultiplexer, and a plurality of optical switches. The reconfigurable optical add-drop multiplexer further comprises a second waveguide layer optically coupled to the first waveguide and having a second effective index of refraction,... Agent: Woodcock Washburn LLP

20080219663 - Optical device with cascaded steering devices: An optical switching device for wavelength divisional multiplexed signals uses cascaded arrays of optical steering devices for 1×N routing of WDM optical signals, where N=4, 8, 16, etc. Two cascaded arrays provide 1×4 switching; three cascaded arrays provide 1×8 switching; and so on. Each array is configured with independently controlled... Agent: Patterson & Sheridan, LLP

20080219664 - Method and system for controlling optical network: A technique is described for controlling and optical network composed of network elements (NEs), with the aid of a network controller (NC) being in communication with the network elements. The technique includes collecting, by the network controller NC, information on the NEs therefrom, and, whenever a change in the network... Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw

20080219665 - Optical communication apparatus, optical communication system, and optical communication control method: A common unit that transmits or receives control signals is provided in an optical communication apparatus, and the control signals used in communication include different wavelengths from those of main control signals. In this way, it is possible to simplify the structure of an optical communication apparatus, and reduce the... Agent: Nec Corporation Of America

20080219666 - Optical line terminal arrangement, apparatus and methods: A wavelength division multiplexed optical communication system includes a plurality of optical line terminals which may be part of separate in service networks, each having a line interface and an all-optical pass-through interface including a plurality of pass-through optical ports, and each also including a plurality of local optical ports... Agent: Fitzpatrick Cella Harper & Scinto

20080219667 - Optical communication system and dispersion-compensating optical fiber: With this scheme, there is provided an optical communication system and a dispersion-compensating optical fiber with which a long-haul optical signal transmission is possible by making use of the low optical nonlinearity and the low transmission loss characteristic of the photonic bandgap optical fiber.... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080219668 - Liquid crystal optical device with arrayed waveguide grating: An optical device that processes a wavelength divisional multiplexed (WDM) optical signal includes an arrayed waveguide grating (AWG) and a polarizing liquid crystal array. The AWG demultiplexes and/or multiplexes the wavelength channels of the WDM signal. The liquid crystal array modulates the polarization state of individual wavelength channels so that... Agent: Patterson & Sheridan, LLP

20080219669 - Sdh/sonet convergent network: An apparatus comprising at least one component configured to implement a method comprising inserting best effort packet (BEP) data into a synchronous digital hierarchy (SDH)/synchronous optical network (SONET) frame without encapsulating or reframing the BEP data. Also disclosed is an apparatus comprising a SDH/SONET framer, and a multiplexer coupled to... Agent: Conley Rose, P.c.

20080219670 - Rof system providing hd wireless communication service and signal control method for the same: Disclosed is an RoF system providing an HD wireless communication service. The RoF system includes the base station for transmitting and receiving each of the TDD/FDD individual signals and TDD/FDD combined signals, channel-combining downstream signals for a TDD scheme with downstream signals for an FDD scheme, and generating TDD/FDD mode... Agent: Docket Clerk

20080219671 - Indirect optical free-space communications system and method for the broadband transmission of hight-speed data: An indirect optical free-space communications system provides broadband transmission of high-speed data in in transportation vehicles such as aircraft. The system includes a transmitter with a light source that can be modulated and a receiver with a photo detector, adapted to receive light that is emitted from the transmitter and... Agent: Crowell & Moring LLP Intellectual Property Group

20080219672 - Integrated infrared receiver and emitter for multiple functionalities: Apparatuses and methods to detect and emit various infrared (IR) and ambient light signals using an integrated sensor and emitter device. Embodiments include a sensor to sense proximity, to sense IR data signals, and to sense ambient light; and an emitter of an IR proximity signal. The sensor detects the... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080219674 - Optical space transmission device including rotatable member: An optical space transmission device includes: a first portion; and a second portion which is rotatably connected to the first portion and performs space transmission of signals using light between the first portion and the second portion. The device includes: a first light emitting and receiving module which is provided... Agent: Cantor Colburn, LLP

20080219673 - Optical transceiver with reduced height: A transceiver having a light source die, a photodetector die and a substrate is disclosed. The substrate has a first well in which the light source die is mounted and a second well in which the photodetector die is mounted. The substrate has a reflective surface which blocks light leaving... Agent: Kathy Manke Avago Technologies Limited

20080219675 - Apparatus and method for light intensity modulation and optical transmission system employing the same: A multilevel light intensity modulation system can generate a multilevel modulated optical signal from a single light source without handling multilevel electrical signals. The light from a light source 1 is branched by a Y-branch 40 into two light beams, which are phase-modulated by phase modulation sections 41, 42 with... Agent: Nec Corporation Of America

20080219676 - Transmitting device, receiving device, and optical communication method: A receiving device includes a light-receiving unit receiving a light transmitted from a light source, luminance of the light changing corresponding to an information, the light-receiving unit having a plurality of light-receiving elements detecting the light repeatedly at times different from one another, and a decoding unit decoding a light-receiving... Agent: Nixon & Vanderhye, Pc

20080219677 - Optical transmitter: An optical transmitter for carrying out an optical modulation based on a data signal to be transmitted, thereby generating a transmission light signal, includes an optical phase modulating section for carrying out an optical phase modulation over an output light of a light source based on a data signal, an... Agent: Sughrue-265550

20080219678 - Control system and control method for controlling optical modulator: A control system for controlling an optical modulator that intensity-modulates input light, the system includes an automatic bias control circuit configured to control an operating point of an optical modulator due to a bias voltage, including (i) a low-frequency signal superimposing unit configured to superimpose a low-frequency signal having a... Agent: Young & Thompson

20080219679 - Optical branching device: An optical branching device comprises a first lens member comprising a transmitting plane surface, a transmitting convex surface having an approximate center of curvature in the transmitting plane surface, and a first optical fiber and a second optical fiber firmly affixed on the transmitting plane surface of the first lens... Agent: Brinks Hofer Gilson & Lione

20080219680 - Optical receiving apparatus and balance adjustment method: Disclosed is a optical receiving apparatus including a balanced receiver comprising first and second light receiving elements which receive respective optical signals from first and second ports of a 1-bit delay interferometer, monitor units that monitor amplitudes and delays at the first and second light receiving elements, respectively, control units... Agent: Nec Corporation Of America

20080212961 - Method for implementing tandem concatenation monitoring automatically and apparatus thereof: A method for automatically implementing Tandem Concatenation Monitoring (TCM), includes: requesting a network management system for a required number of TCM levels; assigning an available TCM level to a pair of network nodes in a sub-network; performing TCM processing, mapping TCM use information into a corresponding overhead, transferring the TCM... Agent: Brinks Hofer Gilson & Lione

20080212960 - Methods and systems for simultaneous real-time monitoring of optical signals from multiple sources: Methods and systems for real-time monitoring of optical signals from arrays of signal sources, and particularly optical signal sources that have spectrally different signal components. Systems include signal source arrays in optical communication with optical trains that direct excitation radiation to and emitted signals from such arrays and image the... Agent: Quine Intellectual Property Law Group, P.C.

20080212962 - Chirp measurement method, chirp measurement apparatus and their application: first and second nonlinear photo-detecting sections for receiving the signal light beams passing through the first and second dispersion media, and for outputting electric signals with the intensities proportional to nth power of the intensities of the signal light beams, where n is greater than one; and a difference detecting... Agent: Dickstein Shapiro LLP

20080212964 - Method for operating pon user terminal and a pon user terminal: A method for operating PON (passive optical network) user terminal and a PON user terminal equipment, when there is only few data service request in the PON, the PON user terminal operates in power saving manner which maintains low speed connection, the method comprises: a judgment condition that the PON... Agent: Leydig Voit & Mayer, Ltd

20080212963 - Network operating system with distributed data architecture: A network operating system NOS for an agile optical network with a plurality of mesh interconnected switching nodes, manages the network using an object-oriented network information model. The model is common to all applications requiring the data stored in the network managed information base. The core model can be expanded... Agent: Capitol Patent & Trademark Law Firm, PLLC

20080212965 - Method and apparatus for dynamically allocating upstream bandwidth in passive optical networks: One embodiment of the present invention provides a system that facilitates dynamic allocation of upstream bandwidth in a passive optical network which includes a central node and at least one remote node. Each remote node is coupled to at least one logical entity, which corresponds to a device or a... Agent: Park, Vaughan & Fleming LLP

20080212966 - Optimised multiplexer/demultiplexer optical structure: An optical demultiplexing structure and method for demultiplexing channels from a wavelength multiplexed optical signal comprising a first optical filter (115), a second optical filter (117), and at least one third optical filter (120), wherein the first filter has a band-pass characteristic for extracting a first set of channels from... Agent: Coats & Bennett, PLLC

20080212967 - Wdm systems and methods: A WDM optical system including a media converter module including a plurality of converter cards, each converter card being configured to convert a native signal into an optical signal. The system also includes a panel bracket having an opening and a plurality of fingers, and a cable management panel including... Agent: Merchant & Gould PC

20080212968 - Photonic link with improved dynamic range: A photonic link system for transmitting and receiving an optical signal in accordance with an input signal is disclosed. The system includes a photonic transmitter and a photonic receiver. The photonic transmitter includes a first signal path including a first photonic modulator for producing a first output optical signal modulated... Agent: Mcdermott Will & Emery LLP

20080212969 - Method and apparatus for using distributed antennas: A distributed antenna system for using distributed antennas provides for locating a plurality of distributed antennas on existing infrastructure such as existing utility poles, traffic lights/signals, streetlights, etc. Each of the distributed antennas is connected to a base station hotel using a fiber optic cable. The distributed antenna system allows... Agent: Sachnoff & Weaver, Ltd.

20080212970 - Non-line of sight optical communications: A non-line of sight (NLOS) communications system and method are provided. An ensemble of photodetectors is used to collect the light, scattered in the sky being illuminated by initial pulsed laser beam carrying information. Each detector collects scattered light from one area in free space along the initial light propagation... Agent: Celight, Inc.

20080212971 - Wireless infrared multimedia system: A portable, data storage device, player, playback device, data streaming device, audio player, video player, audio and video player, satellite radio device, cellular phone (with an integrated audio and/or video player), PDA (personal digital assistant), PMP (portable media player), gaming device, handheld and/or mobile device, each embedded with inherent audio... Agent: John Alexander Galbreath

20080212972 - Molded communications module having integrated plastic circuit structures: An embodiment disclosed herein relates to a communications module. The communications module includes a body composed of a plastic resin and a plurality of conductive traces and contact pads defined on a portion of a surface of the body. The module also includes at least one substantially vertical ridge defined... Agent: Workman Nydegger

20080212973 - Bi-directional optical module: Provided is a bi-directional optical module including: a transmission optical element including an SOA (semiconductor optical amplifier) aligned on an optical axis of an LD (laser diode) formed on a substrate; and a reception optical element comprising a PD (photodiode) including a light receiving surface perpendicular to the optical axis... Agent: Rabin & Berdo, PC

20080212974 - Electromagnetic transmission/reception system: An electromagnetic transmission and reception system comprises a transmitter section and a receiver section. The transmitter section has a first signal source, a second signal source at a lower frequency than the first signal source, and means for generating from the first and second signal sources a plurality of signals... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080212975 - Interconnection network between semiconductor structures, integrated circuit and method for transmitting signals: The invention relates to an interconnection network and an integrated circuit and a method for manufacturing the same. Furthermore, the invention relates to a method for signal transfer between semiconductor structures. The invention is characterized in that a signal of a first semiconductor structure is supplied to a transmitter, which... Agent: Indianapolis Office 27879 Brinks Hofer Gilson & Lione

20080212976 - Optical receiver and optical transmitter: An optical receiver for receiving a transmission light signal which is subjected to an optical phase modulation based on a data signal to be transmitted and has a dither signal superposed thereon includes a delay interferometer to which the transmission light signal having the dither signal superposed thereon is applied... Agent: Sughrue-265550

20080212977 - Fiber optic transmission lines on an soc: An optical transmission method. Signal transmissions between cores of an integrated circuit are performed. Each signal transmission is between two cores of a different pair of cores of the integrated circuit. Each signal transmission includes transmission of an optical signal in the visible or infrared portion of the electromagnetic spectrum... Agent: Schmeiser, Olsen & Watts

20080212978 - Optical pulse regenerator: An optical pulse regenerator comprising means for broadening the temporal widths and flattening the centre portions of an optical pulse in optical communication using a saturable absorber such as, an unbalanced optical interferometer, and with an optical amplifier.... Agent: Darby & Darby P.C.

20080212979 - Optical transmitter and optical transmission control method: An exemplary aspect of the invention is an optical transmitter that emits a light signal, including: a light source; a Mach-Zehnder optical modulator; a modulator driver; a wavelength information holder; and a driving voltage controller, wherein the Mach-Zehnder optical modulator modulates the light intensity of output light from the light... Agent: Nec Corporation Of America

20080212980 - Methods and systems for polarization control and polarization mode dispersion compensation for wideband optical signals: An optical processing method includes: receiving an optical signal from an optical system, wherein the optical signal is distorted by frequency-dependent polarization effects in the optical system; spatially dispersing frequency components of the distorted optical signal on a spatial light modulator (SLM); and independently adjusting the polarization transfer matrix of... Agent: Fish & Richardson PC

20080212981 - Optical receiver and visible light communication system: A data signal to be transmitted is supplied to a modulator of a transmitter, and the modulator modulates the output of a blue light-excited white LED and outputs blue LED light and phosphor light. The modulated blue light enters to a photo-electric converter through an LED light transmission color filter.... Agent: Knobbe Martens Olson & Bear LLP

20080212982 - Optical receiver, optical receiving apparatus using the optical receiver and optical receiving method thereof: An optical receiver includes an optical amplifier configured to amplify an input optical signal and output an amplified optical signal; and a light receiving element configured to convert the amplified optical signal into an electrical signal and output the electrical signal, and the optical amplifier controls an output-level of the... Agent: Young & Thompson