Optical communications inventions 06/09

20090162051 - Wireless tuning and reconfiguration of optoelectronic modules: A method for adjusting a communications transmission characteristic, such as the optical wavelength, in an optoelectronic module having a tunable laser subassembly for converting and coupling an information-containing electrical signal with an optical fiber including a housing having an electrical input for coupling with an external cable or information system... Agent: Emcore Corporation

20090162052 - Latency measurement in optical networks: A device for measuring optical latency in a test path includes an optical source to generate an optical signal. An optical modulator modulates the optical signal based on a modulation signal. An output port outputs the modulated optical signal to the test path. An input port receives a return optical... Agent: Verizon Patent Management Group

20090162053 - Pon system method for receiving optical signal and olt: When a signal of weak optical power is received immediately after a signal of intense optical power, input of the signal of intense optical power readily causes saturation, and the influence interferes in the signal of weak optical power to deteriorate receiver sensitivity. Moreover, when a reverse-bias voltage of APD... Agent: Stanley P. Fisher Reed Smith LLP

20090162054 - Collection of data from an optical channel monitor without causing a malfunction of a transmission apparatus: A method of collecting data from an optical channel monitor for monitoring the power of a wavelength-division multiplexed light signal at each wavelength is disclosed. The total light power is analog-to-digital converted by an A/D converter. The data of the total light power which has been analog-to-digital converted is compared... Agent: Nec Corporation Of America

20090162055 - Optical access system: An optical access system capable of avoiding cutoffs or interruption in the periodically transmitted signals that occur during the ranging time is provided. A first method to avoid signal cutoffs is to stop periodic transmit signals at the transmitter during the ranging period, and transmit all the periodic transmit signals... Agent: Stanley P. Fisher Reed Smith LLP

20090162056 - Method and apparatus for measuring signal power levels using an optical network terminator and a set top box: Methods, systems, apparatuses, and computer programs for measuring power levels of media signals in a communications network such as, for example, an FTTx network, using an Optical Network Terminal (ONT) and a Set Top Box (STB). A method for detecting a signal power level of a channel in a communication... Agent: Fitzpatrick Cella Harper & Scinto

20090162057 - Pluggable module with integrated traffic management functionality: The invention relates to a network comprising at least one host device having an interface card connected to a backplane of said host device, wherein said interface card comprises at least one cage for receiving a pluggable module which performs a traffic management of data transported via at least one... Agent: F. Chau & Associates, LLC

20090162058 - Fibre channel fabric and switches with flexible prefix addressing: A way to assign flexible prefixes to Switches in Fibre Channel Fabrics while using the currently defined FC_ID address space. This allows end devices in different Fibre Channel Fabrics to communicate with one another, without requiring modifications to existing end devices, nor to perform Network Address Translation between Fabrics. The... Agent: Weaver Austin Villeneuve & Sampson LLP

20090162059 - Wavelength division multiplexing transmission system: A wavelength division multiplexing transmission system in which a first channel using an intensity modulation scheme and a second channel using a phase modulation scheme are present includes a polarization scrambler inserted into a signal path of either one of the first channel and the second channel to perform polarization... Agent: Fujitsu Patent Center C/o Cpa Global

20090162060 - Optimization mechanism for use with an optical control plane in a dwdm network: Methods and apparatus for efficiently utilizing an optical control plane distinct from an electronic control plane to facilitate the setup of paths in a dense wave division multiplexing network are disclosed. According to one aspect of the present invention, a method includes receiving a probe arranged determine the optical feasibility... Agent: Patent Capital Group - Cisco

20090162061 - Optical transmission system and method: An optical transmission system for performing frequency synchronization even with a client signal with low frequency accuracy, and for transmitting thereof by accommodating/multiplexing without causing a bit slip. A new overhead is added to the entire client signal, and the signal including the new overhead being stuffed is transmitted in... Agent: Fitch Even Tabin And Flannery

20090162063 - Network system, optical network unit and optical line terminal: It is necessary to completely remove overlapping of signals between plural PONs in order to make the PONs coexist. Accordingly, it is required to share or intensively manage bandwidth use conditions over an optical fiber that serves as a common band between plural systems. Therefore, transmission clocks should be synchronized... Agent: Mattingly & Malur, P.C.

20090162062 - Session initiation protocol (sip) provisioning error detection for an optical network terminal (ont): A Session Initiation Protocol (SIP) network can malfunction or be incorrectly provisioned in such a way that an Optical Network Terminal (ONT) cannot perform SIP operations and complete SIP voice path calls between the ONT voice port and the SIP network. Accordingly, a technique for validating SIP operations is provided... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20090162064 - Network system and optical line terminal: It is necessary to completely remove overlapping of signals between plural PONs in order to make the PONs coexist. Accordingly, it is required to share or intensively manage bandwidth use conditions over an optical fiber that serves as a common band between plural systems. Therefore, transmission clocks should be synchronized... Agent: Mattingly & Malur, P.C.

20090162065 - Network system and optical line terminal: It is necessary to completely remove overlapping of signals between plural PONs in order to make the PONs coexist. Accordingly, it is required to share or intensively manage bandwidth use conditions over an optical fiber that serves as a common band between plural systems. Therefore, transmission clocks should be synchronized... Agent: Mattingly & Malur, P.C.

20090162066 - Intra-channel equalizing optical interleaver: An apparatus includes an interleaver configuration for at least one of combining or separating odd and even channel groups to achieve channel density doubling; and an optical equalizer for suppressing inter symbol interference within the channels to provide intra-channel equalizing in the optical path, the equalizer being integrated into the... Agent: Nec Laboratories America, Inc.

20090162067 - Optical transmission device: An optical apparatus includes a first optical amplifier for adjusting an output value to a constant level; an optical signal processor located before the first optical amplifier and processing the optical signal; a second optical amplifier located before the optical signal processor and subjected to automatic gain control for adjusting... Agent: Staas & Halsey LLP

20090162068 - Polarization mode dispersion compensation circuit: An object of the present invention is to realize a compensation circuit which can cope with rapidly fluctuating polarization mode dispersion, and the configuration thereof is a polarization dispersion compensation circuit for compensating polarization mode dispersion which takes place when a signal propagates on a transmission path, characterized by comprising:... Agent: Sughrue Mion, PLLC

20090162069 - Apparatus and method of optical communication: An optical communication apparatus includes an optical source and electronic control circuitry configured to generate a burst of heterogeneous pulses. The burst of heterogeneous pulses includes pulses within a band of characteristic pulse frequencies. The electronic control circuitry is further configured to transmit a plurality of the burst from the... Agent: Motorola, Inc. Law Department

20090162070 - Optical transmission module: An optical transmission module includes a first transmission line for transmitting an electric signal, a resistance element used as a termination point, a second transmission line connected to the resistance element, and a surface ground pattern forming a coplanar line through the first and second transmission lines on a surface... Agent: Leydig Voit & Mayer, Ltd

20090162071 - Auto-tracking system for mobile free-space optical (fso) communications: Free-space optics (FSO) is an unlicensed line-of-sight technology that uses modulated optical lasers to transmit information through the atmosphere. By using invisible beams of light, FSO can transmit and receive voice, video, and data information. To date, the primary concentration of FSO research and development has been toward the accurate... Agent: Dunlap Codding, P.C.

20090162072 - Transmission apparatus and method of switching phase lock reference frequency signal thereof: An optical transmission apparatus according to the present invention connects a terminal apparatus side in which a transmission line is formed by, for example, SONET/SDH, and a WDM side in which a transmission line is formed by, for example, OTU3. The optical transmission apparatus according to the present invention includes... Agent: Staas & Halsey LLP

20090162073 - Optical module: An optical module includes a fusion splicing optical fiber and a ferrule. The fusion splicing optical fiber includes a first optical fiber including optical fiber ends and a first optical fiber core, a second optical fiber including optical fiber ends and a second optical fiber core, and a fused portion... Agent: Staas & Halsey LLP

20090162074 - Wavelength dispersion compensation control method and wavelength dispersion compensation control device: A wavelength dispersion compensation control method determining whether a clock component is contained in an optical signal received from an optical transmission path and, if a clock component if contained in the optical signal, extracting the clock component, and stopping control of a variable wavelength dispersion compensator when no clock... Agent: Staas & Halsey LLP

20090162075 - Transmission system and transmission method: A transmission system includes a transmission device that performs data communication with adjacent transmission devices. The transmission device calculates the error rates of data communication, and set line cost based on the error rate. The transmission device synchronizes obtained line costs, and learn the line cost of each line between... Agent: Staas & Halsey LLP

20090162076 - Method and system for electrochemical impedance spectroscopy: A method and system of measuring the spectroscopic impedance of a sensor and its immediate surroundings. The sensor is disposed on an engineered structure and is coated with a protective coating. The method includes providing a first optical signal having a first modulation frequency and amplitude. The method also includes... Agent: 3m Innovative Properties Company

20090162077 - Precision timing pulse width communications systems and methods: Systems and methods are described for pulse communications using precision timing. A method includes digitally pulse coding a data stream; and modulating a carrier signal using the digitally pulse coded data stream.... Agent: John Bruckner, P.C.

20090154916 - Method and apparatus for gpon gem error correction implementation: A method and a device of enhancing data integrity using hash function for data transmission over an optical network are disclosed. The device includes a hash circuit, a lookup circuit, a vector circuit, and a correcting circuit. The hash circuit is capable of performing a hash function and configured to... Agent: James M. Wu Jw Law Group

20090154917 - Photonic integrated circuit device and elements thereof: A photonic integrated circuit (PIC) device is described. The PIC device includes a set of optical transceivers including optical transmitters and optical receivers, and an embedded optical interconnect mesh operatively associated with the set of optical transceivers and structured to enable at least one of the following network architectures: a... Agent: Doron Handelman

20090154918 - Data transport system with an embedded communication channel: A network comprising at least one host device having an interface card connected to a backplane of said host device, wherein said interface card comprises at least one cage for receiving a pluggable module which provides at least one embedded communication channel which exchanges performance monitoring data and configuration data... Agent: F. Chau & Associates, LLC

20090154919 - Pulsed high loss loop back signalling scheme: An optical transmission system comprises two optical fibbers carrying optical signal traffic between two terminals, and a plurality of optical repeaters coupled to the two fibers each repeater having a permanently connected passive high loss loop back circuit between the two fibers. One terminal includes a transmitter, which launches a... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090154920 - Ethernet service configuration device, method, and system in passive optical network: An Ethernet service configuration device, method, and system in a passive optical network (PON) are provided. The device includes a PON protocol processing module, an Ethernet module, and at least one service module based on Ethernet which are sequentially connected. The Ethernet module includes a media access control (MAC) bridge... Agent: Darby & Darby P.C.

20090154921 - Control system and method for optical communication device application: The objective of the present invention is to provide with control system and method for optical communication device application, the system and the method cooperatively controlling software and an optical device controller (hardware) contributing a plurality of loops, at least one of which having a singularity more than first order.... Agent: Nixon & Vanderhye, PC

20090154922 - Pilot tones for optical signal wavelength identification and power measurement: produces a spectrum having a plurality of dominant components at least some of which have substantially the same amplitude. A method of detecting the presence of a selected pilot tone signature having a plurality n of dominant spectral components F1 . . . Fn includes generating a power spectrum P0(f).... Agent: Davis & Associates

20090154923 - Wavelength selective switch: Provided is a wavelength selective switch (WSS), and more particularly, a wavelength selective switch for electrically switching a wavelength without physical displacement. The wavelength selective switch includes an optical demultiplexer for dividing an input optical signal into signals having wavelengths corresponding to respective channels, selecting either the optical signal of... Agent: Rabin & Berdo, PC

20090154925 - High performance gigabit passive optical network: A system includes an optical line terminal (OLT) that includes an OLT transmitter. The OLT transmitter includes one or more fixed wavelength optical sources that generate an optical signal at a first wavelength, and an optical waveguide that transmits the optical signal at the first wavelength in an optical network.... Agent: Verizon Patent Management Group

20090154924 - Passive optical network with wavelength division multiplexing: In one embodiment, a passive optical network is provided that includes: an optical line terminal (OLT) configured to transmit a plurality of downstream signals into a corresponding plurality of passive optical networks and to receive a corresponding plurality of upstream signals from the plurality of passive optical networks, wherein each... Agent: Haynes And Boone, LLPIPSection

20090154926 - Highly reliable backbone video distribution architecture: An optical network for providing a plurality of end users with video content, which includes a plurality of video head ends, each coupled to a pair of video hub offices via a plurality of diverse optical communication paths, where each hub office is coupled to a plurality of video serving... Agent: At& T Legal Department - Monka Attn: Patent Docketing

20090154927 - Multi-carrier communication via sub-carrier groups: One embodiment of the present invention relates to a method for communicating over a multi-carrier communication channel. In the method, sub-carrier frequencies that are reserved for communication between a pair of nework nodes are associated with different sub-carrier groups, where the sub-carriers of each sub-carrier group are assigned a common... Agent: Eschweiler & Associates LLC

20090154929 - Gain equalizer, optical amplifier, loss compensation method, and optical amplification method: A gain equalizer for compensation a variation of intensity among a plurality of optical signals each including a different wavelength in a wavelength multiplexed optical signal includes an input part for receiving the wavelength multiplexed optical signal, an outputting part and a gain equalizing unit for repeatedly giving a loss... Agent: Nec Corporation Of America

20090154928 - Wavelength division multiplexer/demultiplexer having flat wavelength response: Provided is a wavelength division multiplexer/demultiplexer having a flat wavelength response. In the wavelength division multiplexer/demultiplexer, a modified taper-shaped optical waveguide is interposed between an input waveguide and a first slab waveguide, such that the distribution of an optical signal input to an Arrayed Waveguide Grating (AWG) has a sinc-function... Agent: Rabin & Berdo, PC

20090154930 - Pluggable module for a network with add-drop functionality: The invention provides a network and a method for bidirectional transport of data and in particular a pluggable module for bidirectional transport of data via at least one optical fibre between host devices providing an add/drop functionality by means of an integrated bandwidth adaption unit. The network comprises at least... Agent: F. Chau & Associates, LLC

20090154931 - Arrangement for compensating raman scattering: A light beam which is used for transmitting a wavelength division multiplex signal is guided to a Bragg grating via an adjustable mirror. According to the angle of incidence of the light beam relative to the longitudinal axis of the Bragg grating, different transmission characteristic curves having different gradients are... Agent: K&l Gates LLP

20090154932 - Pluggable module with integrated time division multiplexing: A network comprising at least one host device having an interface card connected to a backplane of said host device, wherein said interface card comprises at least one cage for receiving a pluggable module wherein the pluggable module comprises Time Division Multiplexing (TDM) between an optical network interface and an... Agent: F. Chau & Associates, LLC

20090154933 - Control system for network of input devices with automatic device configuration: Apparatus, methods, and systems for centrally and uniformly controlling the operation of a variety of devices, such as communication, consumer electronic, audio-video, analog, digital, 1394, and the like, over a variety of protocols within a network system and, more particularly, a control system and uniform user interface for centrally controlling... Agent: Orrick, Herrington & Sutcliffe, LLPIPProsecution Department

20090154934 - Optical transceiver method and apparatus: An optical transceiver (200) can comprise an optical receiver (204), an optical lens (201), and an optical transmitter (210). The optical lens can have a lateral periphery (202) and can be configured and arranged to focus at least some incoming light (203) at the optical receiver. The optical transmitter, in... Agent: Motorola/fetf

20090154935 - Bidirectional optical link over a single multimode fiber or waveguide: A transceiver for use in a bidirectional optical communication link over a multimode channel is provided. The transceiver includes a single transverse mode light source in a transmitter. A waveguide or fiber based bidirectional coupler projects the transmitter mode to the high modes of the multimode channel. A detector coupled... Agent: Goodwin Procter LLP Patent Administrator

20090154936 - Machine with optical communication from a first machine part to a second machine part which rotates relative to the first machine part: To enable signals to be transmitted from a fixed machine part to a machine part opposite same which rotates on a hollow shaft or vice versa, light must be able to be transmitted or received over the entire circumference. This is achieved by using an optical waveguide which, unlike conventional... Agent: Siemens Corporation Intellectual Property Department

20090154937 - Apparatus for restoring clock signal by using circulator: Provided is an apparatus and method for restoring clock signals by using a circulator in an optical transmission system. The apparatus includes a circulator, which allows one of N types of input data signals having different transmission speeds to circulate in a single direction, band pass filters, which extract N... Agent: Lahive & Cockfield, LLP Floor 30, Suite 3000

20090154938 - In-channel residual chromatic dispersion measurement: A system generates optical pulses, that include two frequencies within one optical channel, at a first end of an optical link, and receives the optical pulses at a second end of the optical link. The system also sets a frequency difference for the two frequencies of the optical pulses, calculates... Agent: Verizon Patent Management Group

20090154939 - Method of allocating bandwidth of passive optical network: In a method of allocating a bandwidth of a passive optical network, downward data are transmitted by varying a wavelength based on a wavelength division method and upward data are transmitted using a time division method. Thereby, by efficiently allocating a network bandwidth, data can be transmitted and by realizing... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090154940 - Balanced optical signal processor: An apparatus and method for reducing electrical signal intermodulation by processing a balanced electrical signal in the optical domain in a manner adapted to reduce noise and second order intermodulation, and converting the processed optical signal back to an electrical domain signal with either a single or balanced (differential) outputs.... Agent: Wall & Tong, LLP/ Alcatel-lucent Usa Inc.

20090154941 - Systems and methods for communication system control utilizing corrected forward error correction error location identifiers: The present invention provides systems and methods for communication system control utilizing corrected forward error correction (FEC) error location identifiers in multi-level modulation scheme systems. The present invention utilizes precise error correction information, available for each FEC block of a particular code (including, but not limited to, block codes and... Agent: Clements Bernard PLLC

20090148155 - Optimized cdr application for variable data rate signals in sfps for jitter reduction: Systems and methods for conditioning an optical signal are provided for applications which require management of both low and high-data-rates. Upon receipt of a data signal, a determination is made as to whether the data signal is a high or low-data-rate signal. If the data signal is a high-data-rate signal,... Agent: Patent Group 2n Jones Day

20090148156 - Optical transmitting and receiving apparatus and method for analyzing abnormality or failure of the optical transmitting and receiving apparatus: An optical transmitting and receiving apparatus 1 has a transmitting circuit unit 20 including a light emitting element 2 and a driving circuit 3 which drives the light emitting element 2, a receiving circuit unit 30 including a light receiving element 5 and amplification circuit 6 which amplifies a signal... Agent: Scully Scott Murphy & Presser, PC

20090148157 - Identifying communication errors caused by the exchange of unsupported messages among devices in a network: A method, and an apparatus, system, and sequences of instructions that operate in accordance with the method, for identifying errors in communications in a system that provides services. In the method, control messages are generated and sent to a network device. Error information generated in response to an unsupported control... Agent: Fitzpatrick Cella (tellabs)

20090148158 - Optical signal quality monitoring apparatus: The present invention relates to the quality monitoring of optical signals, which have different symbol rates and generated by different modulation schemes, used for example in a wavelength division multiplexing network. The apparatus according to the invention includes an optical splitter for outputting the input optical signal to a first... Agent: Oliff & Berridge, PLC

20090148159 - Method and apparatus for securing fiber in an optical network: A method and apparatus for securing an optical communication link includes the step of identifying a profile of the link by measuring, at the transmitter, optical back-reflections from optical pulses forwarded to a receiver. The profile is stored at the transmitter. Periodically during operation, such as during key exchange, more... Agent: Anderson Gorecki & Manaras LLP

20090148161 - 10 gbe lan signal mapping to otu2 signal: A high-capacity digital communications system and method of transporting 10 GbE LAN packets between user devices over an OTN network that allows the packets to be transported in a manner that is transparent to the destination device(s) on the network. The digital communications system includes an OTN network, and at... Agent: Weingarten, Schurgin, Gagnebin & Lebovici LLP

20090148160 - Optical diplexer module using mixed-signal multiplexer: An optical diplexer module includes: an optical diplexer module comprising: a multiplexing unit multiplexing RF signals and a wideband digital signal having a baseband bandwidth to output a single multiplexed signal; an E-O converter converting the multiplexed signal into an optical signal and externally outputting the optical signal; and an... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090148162 - Methods for non-wavelength-converting multi-lane optical switching: A method for providing multi-wavelength switching. The method comprising receiving a plurality of signals through at least one input port, and separating the plurality of said signals into at least one wavelength signal set based on wavelengths, wherein a first wavelength signal set of said at least one wavelength signal... Agent: Winstead PC

20090148163 - Method for operating transparent node for wdm shared \"virtual ring\" networks: A system and method for a transparent WDM metro ring architecture in which optics enables simultaneous provisioning of dedicated wavelengths for high-end user terminals, while low-end user terminals share wavelengths on “virtual rings”. All wavelengths are sourced by the network and remotely modulated at customer “End Stations” by low cost... Agent: At&t Corp.

20090148164 - Signal equalizer in a coherent optical receiver: A signal equalizer for compensating impairments of an optical signal received through a link of a high speed optical communications network. At least one set of compensation vectors are computed for compensating at least two distinct types of impairments. A frequency domain processor is coupled to receive respective raw multi-bit... Agent: Blake, Cassels & Graydon, LLP

20090148165 - Optical filtering apparatus and optical communication system: Provided is an optical filtering apparatus which is applied to a Time Division Multiplexing Passive Optical Network (TDM-PON) based on a wavelength division multiplexing (WDM) method. The optical filtering apparatus includes: an optical signal distributing unit dividing an optical signal received from an optical line terminal into at least one... Agent: Lahive & Cockfield, LLP Floor 30, Suite 3000

20090148166 - Optical add/drop multiplexer: An optical add/drop multiplexer includes a first optical coupler receiving an optical signal including a plurality of multiplexed wavelengths, a wavelength blocker receiving the optical signal from the first optical coupler, and blocking at least one wavelength of the plurality of multiplexed wavelengths, a first wavelength selective switch, having one... Agent: Hanify & King Professional Corporation

20090148167 - Communication apparatus and signal transmitting method: A communication apparatus time-division multiplexes a first signal transmitted at a first bit rate and a second signal transmitted at a second bit rate which is an integer multiple of the first bit rate, and sends out the first signal and the second signal to one line. The communication apparatus... Agent: Staas & Halsey LLP

20090148168 - Optical fiber access network and commuication protection method thereof: The present invention relates to an optical fiber access network and a communication protection method thereof. The optical fiber access network comprises an optical fiber communication system, a wireless communication system, a communication service switch device (8), a second optical network unit (6) and protection optical fiber (91, 92). The... Agent: Thomas W. Tolpin Olson & Cepuritis, Ltd.

20090148169 - Calibration: A system, including an optical source configured to emit optical signals, and an optical receiver configured to receive optical signals; a housing having one or more optical windows; a user-detachable reflector attached to the housing, configured to enable emitted optical signals exiting an optical window to be reflected, so that... Agent: Harrington & Smith, PC

20090148170 - Skew compensation across polarized optical channels: Embodiments of the present invention provide systems, devices and methods for managing skew within a polarized multi-channel optical transport system. In a DP-QPSK system, skew between polarized channels is compensated within the transport system by adding latency to at least one of the polarized channels. The amount of added latency... Agent: Infinera Corporation

20090148171 - Dqpsk/dpsk optical receiver with tunable optical fibers: An optical receiver includes a first interferometer having a plurality of arms. The optical receiver further includes first tunable optical filters connected in series with the arms of the first interferometer, where each first tunable optical filter is tuned to filter a region of overlap in the optical frequency spectrum... Agent: Verizon Patent Management Group

20090142051 - Coherent optical detector and coherent communication system and method: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler... Agent: Celight, Inc.

20090142052 - Monitoring of optical signals: An apparatus and method for monitoring of optical signals 60 at a node (12, 14, 16) in a WDM telecommunications system 10 comprising the employment of photodiodes (54, 56, 58). Each of the photodiodes (54, 56, 58) has a short response time relative to a number of bit periods of... Agent: Coats & Bennett, PLLC

20090142053 - Integrated optical communication and range finding system and application thereof: The present invention is directed toward systems for conducting laser range and enabling optical communication between a plurality of entities and to the application of such systems in a secure covert combat identification system. In one embodiment, the present invention uses a novel laser system that generates high pulse rates,... Agent: Townsend And Townsend And Crew, LLP

20090142054 - Sonet multiplexer card having front panel access to electrical and optical connectors for use in compact enclosure for sonet multiplexer cards: A reduced size multiplexer and, in particular, a reduced size SONET multiplexer module is provided for use in a reduced size enclosure. The SONET multiplexer module has electrical and optical connectors on its faceplate to provide ease in access without having to remove the SONET multiplexer from the enclosure. The... Agent: Roylance, Abrams, Berdo & Goodman, L.L.P.

20090142055 - Control device and a method for controlling an optical data transmission, and a shared storage network system: A control device for controlling the optical data transmission in an optical burst switching mode between a source computer and a destination computer, the control device being connected to the source computer and to the destination computer and being adapted such that in case of a burst to be transmitted... Agent: Foley And Lardner LLP Suite 500

20090142056 - Extending routing protocols to accommodate wavelength switched optical networks: A network component comprising a control plane controller configured to implement a method comprising transmitting routing and wavelength assignment (RWA) information to at least one adjacent control plane controller, wherein the RWA information is transmitted using an interior gateway protocol (IGP). Included is a method comprising communicating a message comprising... Agent: Conley Rose, P.C.

20090142057 - Optical transmission equipment and optical network: In order to insert a regenerator into a wavelength cross-connect equipment, there is provided at least one port that demultiplexes one wavelength among the wavelength multiplexed signals that are input to a wavelength selective switch. An output of the port that demultiplexes one wavelength is input to the regenerator, and... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090142058 - Photonic cross-connect: A photonic cross-connect includes a plurality of ingress WS-switches with drop outputs outputting WDM drop signals including odd channels and a plurality of egress WS-switches for receiving WDM add signals including add channels. Wavelength selective elements in a drop path and in an add path comply with a double frequency... Agent: K&l Gates LLP

20090142059 - System control and management of passive optical networks: A highly reliable, carrier class passive optical network and associated devices which employs multiple instances of operating software in host systems, as well as mechanisms to automatically determine whether an individual OLT device has entered or left the system without disruption to overall system operation.... Agent: Brosemer, Kolefas & Associates, LLC

20090142060 - Method and apparatus for transferring wdm signals between different wavelength division multiplexed optical communications systems in an optically transparent manner: In a WDM optical communication system that includes a plurality of nodes interconnected by communication links, a node is provided which includes an optical coupling arrangement having at least one input port for receiving a WDM signal and a plurality of output ports for selectively receiving one or more wavelength... Agent: Mayer & Williams PC

20090142061 - Fiber optic communication system with automatic line shutdown/power reduction: A wavelength division multiplexing (WDM) fiber optic communication system is operative to transmit WDM signals between multiple nodes. Each of the nodes has a booster EDFA, and in-band (IB) and out-of-band (OB) supervisory channels operative to monitor the integrity of a transmission link by generating and detecting respective in-band and... Agent: Ipg Photonics Corporation

20090142062 - Dynamic frequency adjustment for interoperability of differential clock recovery methods: A system and method for dynamic frequency adjustment for interoperability of differential clock recovery, including one or more of the following: a frequency generator for receiving a frequency reference clock signal and generating a plurality of frequency signals by operating on the frequency reference clock signal, the plurality of frequencies... Agent: Kramer & Amado, P.C.

20090142063 - Remote controlling system using optical fiber: The present invention provides a remote controlling system using an optical fiber. The remote controlling system is for controlling N electronic equipments located in a situation. The remote controlling system according to the invention includes a receiving unit and a transmitting unit. A radiation signal receiver of the receiving unit... Agent: Reed Smith LLP Suite 1400

20090142064 - Coherent optical detection and signal processing method and system: A method and system of coherent detection of optical signals. The system utilizes a digital signal processor to recover an incoming optical signal. The system employs a local oscillator, which does not need to be phase locked to the signal. The signal may be consistently recovered, even when the polarization... Agent: Michael L. Diaz Diaz And Associates

20090142065 - Optical data-bus system: An optical data-bus system for wireless signal transmission between two modules of an appliance, where the modules are each equipped with at least one transmitter and/or at least one receiver, and where the transmitter is a laser diode, and the receiver is a photo-element, with which a laser beam emitted... Agent: Ditthavong Mori & Steiner, P.C.

20090142067 - Method for detecting a signal on a passive optical network: A transceiver assembly is provided for use in an optical telecommunications network. The circuitry arrangement in the transceiver of the present invention generates a ranging signal that is transmitted along the fibers attached thereto and then filters the return signal in an manner that eliminates virtually all of the noise... Agent: Barlow, Josephs & Holmes, Ltd.

20090142066 - Single aperture multiple optical waveguide transceiver: A single-aperture, multi-axial transceiver is provided that is particularly useful in a LIDAR system for detecting low velocities at increased ranges. The system is particularly useful in systems that are required to measure very low velocities and very short distances as well as to provide an operating range of hundreds... Agent: Clark & Brody

20090142068 - Data communication apparatus, electronic camera, and data communication system: A data communication apparatus comprises a storage unit that stores network connection information required for establishing a connection via a network with an external device, a light emission element that emits light, a light emission control unit that converts the network connection information into an optical signal and emits the... Agent: Oliff & Berridge, PLC

20090142069 - Method and apparatus for repeaterless high-speed optical transmission over single-mode fiber using coherent receiver and electronic dispersion compensation: Repeaterless transmission of differential phase-shift keying (DPSK) at 10.7 Gb/s over at least 304 km of standard single-mode fiber is obtained through use of a coherent optical receiver including electronic dispersion compensation. High receiver sensitivity and high tolerance to nonlinearities of DPSK, allow overcoming a total link loss of 58... Agent: Kenneth Watov Watov & Kipnes, P.C.

20090142070 - Methods and apparatus for supporting fiber span loss and dispersion measurements in the presence and absence of dispersion compensation elements: An example embodiment of the invention includes a method and apparatus for supporting fiber span loss and dispersion measurements in the presence or absence of dispersion compensation elements (DCE). The technique may be used to configure a network link by accessing an optical signal at an ingress side of a... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20090142071 - Method and system for polarization mode dispersion compensation: The invention relates to a method and a system for controlling a PMD compensator (2). For this purpose, a measuring signal (MS) is branched off from an already compensated optical data signal (ODSK) and supplied to a polarization adjuster (2). The output signal of the latter is supplied to an... Agent: K&l Gates LLP

20090142072 - Optical interface between two sections of an integrated chip: An integrated electronic chip including: a first section formed on a first substrate; a second section formed on a second substrate; and a chip package. The first section including a first electronic circuit electrically coupled to a first optical transmitter and a first optical receiver. The second section including a... Agent: Ratnerprestia

20090142073 - Method and apparatus for maintaining a coherent combined beam during arbitrary steering: A method and apparatus for accounting for phase differences in a transmit path of an optical system is provided. A transmit control system nullifies phase errors in signals propagating from a coherent source to phase samplers and back to a transmitter sensor. A small time-dependent length modulation is applied to... Agent: Raytheon Company C/o Daly, Crowley, Mofford & Durkee, LLP

20090142075 - Dqpsk optical receiver: According to an aspect of an embodiment, a DQPSK optical receiver, comprising: a first LPF connected to a line branching off from between a first optical-electrical converter and a first data recovery circuit; a second LPF connected to a line branching off from between a second optical-electrical converter and a... Agent: Staas & Halsey LLP

20090142074 - Optical receiving apparatus, optical line terminal apparatus, and optical network system: The optical receiving apparatus of the present invention is provided with an optical receiving unit which receives a burst optical signal and outputs a signal in accordance with an optical reception level, a preamplification unit which amplifies the signal from the optical receiving unit, a direct-current component removing unit which... Agent: Katten Muchin Rosenman LLP

20090142077 - Coherent optical detection and signal processing method and system: A method and system of coherent detection of optical signals. The system utilizes a digital signal processor to recover an incoming optical signal. The system employs a local oscillator, which does not need to be phase locked to the signal. The signal may be consistently recovered, even when the polarization... Agent: Michael L. Diaz Diaz And Associates

20090142076 - Frequency offset compensating apparatus and method, and optical coherent receiver: The present invention relates to a frequency offset compensating apparatus and method, and an optical coherent receiver. The optical coherent receiver includes a front end processor and a frequency offset estimator, of which said front end processor converts an inputted optical signal into a base band digital electric signal, and... Agent: Staas & Halsey LLP