Optical communications inventions 07/08

20080181603 - Burst mode digital diagnostic and control for passive optical network receiving: Methods and systems for an optical line termination including instructions stored on a computer-readable medium, the instructions including a digital diagnostic table, and a plurality of entries within the diagnostic table, wherein a first entry is associated with a first optical network unit, the first entry including at least one... Agent: Workman Nydegger

20080181604 - 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

20080181605 - Multi-degree optical node architectures: An optical node includes a plurality of optical input components operable to receive a plurality of signals communicated in an optical mesh network. A plurality of optical drop components coupled to the plurality of optical input components, each optical drop component operable to select a signal to drop to one... Agent: Baker Botts L.L.P.

20080181606 - Optical bi-directional line-switched ring transmission system, transmission apparatus, and through cross-connect setting method: An optical bi-directional line-switched ring transmission system includes a unit configured to transmit, from a transmission source node in a signal path for setting a cross-connect to an adjacent node, squelch information storing identity information of a transmission source node and a transmission destination node in a squelch information region... Agent: Hanify & King Professional Corporation

20080181607 - Technique for photonic switching: A technique for photonic switching is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for photonic switching. The method may comprise receiving at least one optical signal at a photonic line card, wherein the at least one optical signal comprises one or more wavelength... Agent: Hunton & Williams LLP Intellectual Property Department

20080181608 - Systems and methods for a hierarchical layer one and layer two cross-connect in a transport and aggregation platform: The present invention provides systems and methods to effectively combine layer one and layer two cross-connects in a hierarchical fashion. The present invention combines layer one and layer two cross-connects between a layer one (L1) line card and a layer two (L2) line card in a transport and aggregation platform.... Agent: Clements Bernard Miller

20080181609 - Methods and apparatus for designing a fiber-optic network: Methods and apparatus for designing a fiber-optic network are disclosed. An example apparatus comprises a memory to store a first list of available fibers between a plurality of nodes of a fiber-optic network and a second list of forecasted services for the plurality of nodes, and a network planner to... Agent: Hanley, Flight & Zimmerman, LLC

20080181610 - Optical signal multiplexing device and optical signal multiplexing method: An optical signal multiplexing device includes a delay-amount adjusting unit that converts wavelengths of optical signals to be multiplexed when the optical signals are obtained, and adjusts delay amounts of the optical signals by passing the wavelength-converted optical signals through waveguides that generate propagation delays corresponding to the wavelengths in... Agent: Staas & Halsey LLP

20080181611 - Bidirectional, optical transmitting/receiving module, optical transmitting/receiving device, and bidirectional optical transmitting/receiving module manufacturing method: To provide a low-cost and fine-property bidirectional optical transmitting/receiving module and the like, which include a de-multiplexing device that uses a V-letter shaped optical waveguide and a dielectric multilayer filter. Formation of an end face where the dielectric multilayer film is formed and separation of optical modules are performed in... Agent: Nec Corporation Of America

20080181612 - Method and system for wavelength division multiplex optical signal combining: A selective WDM add-channel system and method for adding channels to a WDM (wavelength division multiplexed) signal input to produce a WDM signal output while protecting against signal collisions are provided. The method protects against signal collisions by determining channel wavelengths of add-channel signals and at least one of the... Agent: Smart & Biggar P.o. Box 2999, Station D

20080181613 - System and method for managing different transmission architectures in a passive optical network: In accordance with the teachings of the present invention, a system and method for managing different transmission architectures in a passive optical network (PON) is provided. In a particular embodiment, a method for managing different transmission architectures in a PON includes transmitting traffic in an upstream or downstream direction in... Agent: Baker Botts L.L.P.

20080181614 - Method and apparatus for correcting color imbalance of visible light in wavelength division parallel visible light communications: A method and an apparatus for correcting a color imbalance of visible light in wavelength division parallel visible light communications (VLC). The method includes the steps of: transmitting a visible light signal including information from a VLC transmitter to a VLC receiver during a preset correction unit, and setting correction... Agent: Cha & Reiter, LLC

20080181615 - Method and system for dynamic dispersion compensation: A dynamic dispersion compensation system and method are provided. The method dynamically compensates for dispersion in an optical signal by recovering a first clock and a second clock from a first polarization component and a second polarization component of the optical signal respectively, determining a delay time between the first... Agent: Smart & Biggar P.o. Box 2999, Station D

20080181616 - Wavelength dispersion compensation control device and method thereof: A wavelength dispersion compensation control device includes an error correction circuit for correcting a code error of a signal from an optical transmission line, a variable wavelength dispersion compensator for changing wavelength dispersion characteristics based on this error correction information and performing a dispersion compensation of the optical transmission line,... Agent: Sughrue Mion, PLLC

20080181617 - Method and apparatus for correcting color imbalance of visible light in wavelength division parallel visible light communications: Disclosed is a method and an apparatus for correcting a color imbalance of visible light in wavelength division parallel visible light communications. The method includes the steps of: inverting an original signal including information by a visible light communication transmitter; transmitting the original signal including the information and an inverted... Agent: Cha & Reiter, LLC

20080181618 - Modulating a signal according to 2n-psk modulation: A system operable to modulate a signal according to phase-shift keying (PSK) modulation includes a translator and a phase modulation system. The translator receives data signals and translates the data signals into control signals, where the number of control signals is greater than the number of data signals. The phase... Agent: Baker Botts L.L.P.

20080181619 - Method and apparatus for generating signals with increased dispersion tolerance using a directly modulated laser transmitter: An optical transmitter is disclosed wherein a modulating signal, such as an NRZ signal, encoding data is combined with a time derivative of the modulating signal and coupled to a directly modulated laser in order to generate artificial transient chirp in the output of the laser effective to substantially compensate... Agent: Workman Nydegger

20080181620 - Control method for optical phase modulation: A QPSK modulator comprising: two phase modulators implemented in parallel for outputting the light phase-modulated with an information signal; a phase shifter for shifting the phase of the light phase-modulated with the first phase modulator of the two phase modulators and for outputting the phase-shifted light; and a combiner for... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20080175586 - Communication network with skew compensation: Embodiments of the present invention compensate for skew across a wavelength division multiplexed network. The network is a wavelength division multiplexed optical transport network. The skew compensation can be performed electrically or optically. It can be performed on the transmission side of the network, the receiver side of the network... Agent: North Weber & Baugh LLP

20080175587 - Method and apparatus for network fault detection and protection switching using optical switches with integrated power detectors: Current network switching architectures require communication with a higher level network control plane, which can be slow to reroute communications, resulting in unacceptable losses of communications for customers. Examples embodiments of the present invention reroute communications faster detecting optical power of an optical signal at optical switches coupled via optical... Agent: Hamilton, Brook, Smith & Reynolds, P.c.

20080175588 - Method and apparatus for analyzing a network or a network element fault: Common techniques for restoring service to an optical network after a service interruption, while quick, do not to assist a service provider or a vendor in determining a true root-cause of the interruption. Oftentimes, the true root-cause remains undetermined, resulting in costly and unnecessary fixes. In contrast, an example embodiment... Agent: Hamilton, Brook, Smith & Reynolds, P.c.

20080175589 - Communication network with skew determination: Embodiments of the present invention determine skew relative to a plurality of communication paths on a network system. The network is a wavelength division multiplexed optical transport network. The plurality of communication paths involves different signal and path attributes such as a plurality of carrier wavelengths, optical carrier groups, physical... Agent: North Weber & Baugh LLP

20080175590 - Communication network with skew path monitoring and adjustment: Embodiments of the present invention route a WDM signal across multiple communication paths using skew characteristics of at least some of the communication paths. The network is an optical transport network, using either circuit or packet based switching, and wavelength division multiplexed wavelengths and/or optical carrier groups (“OCGs”) over a... Agent: North Weber & Baugh LLP

20080175591 - Filter assembly and optical module using same: There is provided a filter assembly for combining a wavelength multiplexed optical signal by multiplexing optical signals of different wavelength emitted from respective optical devices, and/or for dividing a wavelength multiplexed optical signal into optical signals of different wavelength and causing the optical signals of different wavelength to enter respective... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080175592 - Wpon architecture using model-locked laser with nonlinear dispersive fiber wdm light source and colorless onu: A passive optical network component comprising a model-locked laser, a dispersive nonlinear fiber coupled to the model-locked laser, and a modulator coupled to the dispersive nonlinear fiber, wherein the model-locked laser provides wavelengths for downstream modulations and enables upstream transmissions from a colorless optical network unit (ONU). Also disclosed is... Agent: Conley Rose, P.c.

20080175593 - Systems and methods for adaptive interference cancellation: In one embodiment a communications system includes an RF receiver that receives a desired signal and the interference signal, a first phase modulator that receives the desired signal and the interference signal from the RF receiver and generates a resulting optical signal, a second phase modulator that generates a modulated... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20080175594 - Method and apparatus for generating optical duobinary signals with enhanced receiver sensitivity and spectral efficiency: An optical network transmitter comprising a fractional-bit delay module, an optical modulator coupled to the fractional-bit delay module, and a band-limiting optical filter coupled to the optical modulator. Also disclosed is a transmission system comprising a source configured to generate two complementary binary data streams, a fractional-bit delay module in... Agent: Conley Rose, P.c.

20080175595 - Micropulse lidar transmitter based on a low-sbs erbium-doped silica fiber: A narrow-linewidth micropulse LIDAR transmitter based on a low-SBS single clad, small-mode-area optical fiber. High narrow-linewidth peak powers are achieved through the use of an erbium doped fiber with an acoustic waveguide. Over 6 μJ per pulse (100 ns pulse width) is achieved before a weak form of stimulated Brillouin... Agent: Patti, Hewitt & Arezina Llc

20080175596 - Optical correlation apparatus and method: Optical correlators are discussed, suitable for in-vehicle distance measurement. The correlators use modulation sequences based on maximal length sequences. A number of different modulation sequences are obtained by generator (32) from a single maximal length sequence, either by adding a variable number of cycles to the end of the maximal... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080175597 - Optical clock signal regeneration device: An optical clock signal regeneration device, which includes a mode-locking laser element, a signal light provision component and an optical clock signal formation component, is provided. The signal light provision component includes a birefringent medium, at which a polarization group delay time between orthogonal polarization signals, which is caused by... Agent: Rabin & Berdo, Pc

20080175598 - Software-based electro-optic modulator bias control systems and methods: The present invention provides a software-based electro-optic modulator bias control system resident in an optical transceiver including an electro-optic modulator that includes an optical-to-electrical converter including a transimpedance amplifier, an analog-to-digital converter, and a software algorithm, wherein the software algorithm is operable for determining an optimum bias voltage applied to... Agent: Clements Bernard Miller

20080175599 - Optical pulse generator, semiconductor laser module, and semiconductor laser drive apparatus: Provided are: an RF signal generator 110 which generates and outputs an RF signal having a signal waveform in which the potential of the signal changes to be alternately positive and negative with respect to a reference potential; a semiconductor laser 140 which receives, at its one end, a drive... Agent: Jianq Chyun Intellectual Property Office

20080175600 - Method and apparatus for pulse generation and adaptive pulse generation for optical communications: One embodiment of the invention relates to producing optical pulses for use on a transmission link. A light source is configured to produce an optical signal. A pulse generator is coupled to the light source. The pulse generator is configured to receive, for a first channel, the optical signal and... Agent: Celight, Inc.

20080175601 - Optical transmitter and optical communications device: Disclosed is an optical transmission module in which effects of conductive heat from sides of a metal case upon a thermistor are reduced, thereby allowing steady optical beam wavelengths to be obtained over a wide range of temperatures, regardless of the temperature of the usage environment. Specifically, the optical transmission... Agent: Mattingly, Stanger, Malur & Brundidge, P.c.

20080175602 - Optical reception device: An optical reception device realizes stabilization of reception sensitivity inexpensively and highly precisely. The optical reception device includes: a Mach-Zehnder type 1-bit delay unit including a one-terminal input port and two-terminal output ports for decoding an optical difference phase shift keying (DPSK) signal and provided with one or more phase... Agent: Birch Stewart Kolasch & Birch

20080175603 - Optical receiver for visible light communication and light communication system using the same: An optical receiver for visible light communication includes a lens system for converging visible light for light communication and an optical filter for passing converged visible light to the optical receiver. A photoelectric transmission device detects data from visible light for light communication in a VLC system. An optical filter... Agent: Cha & Reiter, Llc

20080170852 - Wire emulation through a network for propagation of failure information: An optical transponder, system, method, and program wherein the transponder monitors for at least one of a failure or an alarm signal. In response to detecting a failure or alarm signal (communication), the transponder performs at least one of a predetermined action and propagating an alarm communication to a network,... Agent: Fitzpatrick Cella (tellabs)

20080170853 - System for low noise aggregation in docsis contention slots in a shared upstream receiver environment: A cable modem termination system is disclosed with flexible mapping of upstreams to downstreams and flexible mapping of downstreams to optical nodes and optical nodes to upstream receivers and the ability to add singe upstreams or downstreams as needed for load balancing. Multiple downstreams can share the same upstream. Multiple... Agent: Ronald Craig Fish, A Law Corporation

20080170854 - Method of identifying domain-to-domain link based on automatically switched optical network: A method of identifying domain-to-domain link based on ASON (Automatically Switched Optical Network), including: storing, by a node in ASON, a route control ID of an abstract node each high layer network; obtaining, by the node, the route control ID of the abstract node in each network layer stored in... Agent: Wolf Greenfield & Sacks, P.C.

20080170855 - Optical switch apparatus and optical switching system: An optical switching system having a transmission node. The transmission node includes a bit pattern processing unit for processing a bit pattern of transmitted data to stabilize optical power of a frame signal light to be monitored and a frame signal light producing unit for producing frame signal light to... Agent: Staas & Halsey LLP

20080170856 - System for utilizing wavelength reachability and wavelength occupation status information to describe cross-connection capabilities in optical networks: A system for communicating cross-connection information within an optical network by use of wavelength information is provided. Cross-connection information in Wavelength Division Multiplexing (WDM) devices is abstracted, to produce wavelength reachability information and wavelength occupation status information for each node within the optical network. Cross-connection information is distributed from one... Agent: Akin Gump Strauss Hauer & Feld, LLP

20080170857 - System and method for establishing protected connections: A method for establishing protected connections includes determining a primary path to a first node through a first layer of a multi-layer network. The primary path comprises a plurality of first layer links. At least one link of the plurality of first layer links comprises at least one second layer... Agent: Baker Botts L.L.P.

20080170858 - Optical pulse source for use in broadband photonic communication systems: The invention relates to an apparatus and method for providing an improved optical pulse source suitable for use in high-speed optical communication systems. The optical pulse source can output spectrally pure pulses in a high capacity optical communication system. An optical pulse source in accordance with the invention comprises; at... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20080170859 - System and method for multi-rate, high-sensitivity clock and data recovery with adjustable decision threshold, rf input, and optical-to-electrical conversion: The present invention provides a system and method for multi-rate, high-sensitivity CDR, including a variable/adjustable decision threshold, RF input clock recovery, and OE conversion feature. The system includes an optical input connector, CDR circuit, decision threshold circuit, internal power supply, OE converter, external electrical output, and multiple clock outputs. The... Agent: Clements Bernard Miller

20080170860 - Method for transferring data packets: Different transfer time periods are allocated to a network node for a connection, according to different quality classes. During the allocated transfer time period, the network node can transfer data bursts and data packets on the fly. The data packet is no longer transferred when the transfer capacity is required... Agent: Siemens Corporation Intellectual Property Department

20080170861 - Method and system for compensating for optical dispersion in an optical signal in a hybrid optical network: A system and method for dispersion compensation of an optical signal in a hybrid network includes generating optical traffic in a first set of one or more channels, wherein the traffic in the first set of channels is modulated using a first modulation technique. Optical traffic is generated in a... Agent: Baker Botts L.L.P.

20080170862 - Monitoring polarization of a signal communicated according to polarization multiplexing: A system operable to monitor a polarization controller includes the polarization controller and a polarization controller monitor. The polarization controller polarizes the signal to yield a polarized signal comprising a first signal component and a second signal component, where the first signal component is orthogonally polarized with respect to the... Agent: Baker Botts L.L.P.

20080170863 - Apparatus and method for visible light communication: Disclosed are an apparatus and a method for visible light communication, which apparatus uses an illuminator equipped with a plurality of light sources, so that the apparatus can be used for illumination, as well as for visible light communication. The visible light communication apparatus includes an illuminator for generation of... Agent: Cha & Reiter, LLC

20080170864 - Optical device and optical modulation method: The disclosed device and method include varying phases of two data signals at a first predetermined frequency, performing multi-level phase modulation of a light based on the two data signals whose phases are varied at the first predetermined frequency, extracting a component having the first predetermined frequency from an optical... Agent: Staas & Halsey LLP

20080170865 - Method for processing overhead of optical network and device thereof: A method for overhead processing of optical network and device thereof are disclosed, the device includes: an overhead memory, an overhead processor, and an overhead processor control module. The overhead processor control module is used for controlling the operation of the overhead memory and the overhead processor. The method includes:... Agent: Ladas & Parry LLP

20080166119 - Optical network unit for error detection and recovery of optic module and control method thereof: An optical network unit for error detection and recovery of an optical module, and a control method thereof are provided. The optical network unit includes a passive optical network medium access control (PON MAC) to output an optical output control signal to activate a laser diode in a time slot... Agent: Cha & Reiter, LLC

20080166120 - Acoustic modulation: The present invention relates to the modulation of light traveling along a waveguide, in particular to the acoustic modulation of the light. There is provide a modulator arrangement for acoustically modulating optical radiation. The modulator arrangement has: a waveguide portion formed from a flexible material; a vibrator element for generating... Agent: Nixon & Vanderhye, PC

20080166121 - Control system of a multichannel optical switch: A control system of a multichannel optical switch suppressing the generation of a leakage current in a multichannel, highly integrated EO-SW to enable stable operation, that is, a control system of a multichannel optical switch using devices having an EO effect wherein an electrode voltage application device applies voltage for... Agent: Hanify & King Professional Corporation

20080166122 - Optical network backup channel switching control device: An optical network backup channel switching control device is proposed, which is designed for use in conjunction with an optical network for providing a backup channel switching control function, and which is characterized by the capability of generating a main-channel monitoring beam and a backup-channel monitoring beam both on the... Agent: Law Offices Of Mikio Ishimaru

20080166123 - Bidirectional wavelength cross connect architectures using wavelength routing elements: Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least one of the plurality of ports is disposed to simultaneously transmit an output optical signal having at least one of the... Agent: Townsend And Townsend And Crew, LLP

20080166124 - System and method for performing high-speed communications over fiber optical networks: Processing a received optical signal in an optical communication network includes equalizing a received optical signal to provide an equalized signal, demodulating the equalized signal according to an m-ary modulation format to provide a demodulated signal, decoding the demodulated signal according to an inner code to provide an inner-decoded signal,... Agent: James Albert Ward Law Offices

20080166125 - Method for establishing a subscriber connection and a system utilizing the method: A method and a system for establishing a digital subscriber connection between a central site (1) and a subscriber's transmission device (5). The system comprises an optical fiber (2) between the central site and an intermediate equipment (3) on a signal path between the central site and the subscriber's transmission... Agent: Saltamar Innovations

20080166126 - Device and method for decoding an optical multi-level dpsk signal: The invention refers to a device (1) for decoding an optical multi-level DPSK signal (E), the device (1) comprising: means for receiving the multi-level DPSK signal (E); at least two means (3) for transforming optical multi-level DPSK signals (E) into corresponding analog electrical signals (i); means (2) for splitting up... Agent: Central Coast Patent Agency, Inc

20080166128 - Optical apparatus using polarized orthogonal control: An optical apparatus comprising, converting units converting electrical signals into signal lights with different wavelength, polarization control units controlling polarizing states of the signal lights into polarization controlled lights respectively, an optical multiplexer multiplexing the polarization controlled lights into a multiplexed light, an optical branching unit branching the multiplexed light... Agent: Staas & Halsey LLP

20080166127 - Passive optical network system and wavelength assignment method: In a PON system with WDM, at the time of initial setting, each ONU negotiates with an OLT, and automatically acquires a wavelength which can be used by the ONU. One wavelength for negotiation of assigned wavelength is fixed as a default, and a newly connected ONU first uses the... Agent: Mcdermott Will & Emery LLP

20080166129 - Wdm passive optical network with parallel signal detection for video and data delivery: An optical network component, architecture and method for a wavelength division multiplexed passive optical network includes a band coupler configured to demultiplex first and second wavelength division multiplexed content transmitted from an optical line terminal into a first band signal and a second band signal. An arrayed wavelength grating is... Agent: Nec Laboratories America, Inc.

20080166130 - Wavelength division multiplexing source using multifunctional filters: This invention provides a system that combines a wavelength multiplexer with an FM discriminator for chirp reduction and wavelength locker in a filter to produce a wavelength division multiplexed signal with reduced chirp. A partially frequency modulation laser signal is converted into a substantially amplitude modulation laser signal. This conversion... Agent: Workman Nydegger

20080166131 - Parametric monitoring of optoelectronic modules on host system: An optoelectronic module 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 device and for transmitting and receiving information-containing electrical signals over such input, and a fiber optic connector adapted for... Agent: Casey Toohey Emcore Corporation

20080166132 - Method and apparatus for performing laser operations downhole: The disclosure, in on aspect, provides a method for performing a laser operation in a wellbore that includes displacing a wellbore fluid with a laser-compatible medium proximate a location in the wellbore where a work is desired to be performed; positioning a laser head proximate the laser-compatible medium; and passing... Agent: Madan, Mossman & Sriram, P.C.

20080166133 - Optical network remote power supply system for remote switching unit: An optical network remote power supply system is proposed, which is designed for use with an optical network for supplying power to a remote switching unit, and which is characterized by the provision of a light source on the local site which can transmit a light beam via the optical... Agent: Law Offices Of Mikio Ishimaru

20080166134 - Optical transmitter having a widely tunable directly modulated laser and periodic optical spectrum reshaping element: An optical transmitter is disclosed including a widely tunable laser coupled to a periodic optical spectrum reshaper (OSR) to convert frequency modulated pulses from the laser into amplitude modulated pulses. The laser is tuned to generate pulses corresponding to passbands of the OSR spanning a wide range of frequencies. The... Agent: Workman Nydegger

20080166135 - Method for setting power control initial value using indication light in visible light communications and transmission/receive apparatus using the same: Disclosed is a method for setting a power control initial value by using an indication light in visible light communications and a transmission/reception (Tx/Rx) apparatus using the method. The method includes the steps of: radiating multiple indication lights having power levels different from one another by a visible light communication... Agent: Cha & Reiter, LLC

20080166136 - Dual-lensed unitary optical receiver assembly: A unitary optical receiver assembly is formed to include a V-groove passively aligned with a first aspheric lens (the lens formed along a surface perpendicular to the V-groove). An optical fiber is disposed along the V-groove and is used to bring the received optical signal into the unitary assembly. Upon... Agent: Wendy W. Koba, Esq.

20080159735 - Bi-directional ring network having minimum spare bandwidth allocation and corresponding connection admission control: The present invention provides for a method for reserving spare bandwidth for a link in a communication network including a plurality of links. The method provides for monitoring the volume of traffic routed through each link of the communication network. A single link failure for each link is then simulated... Agent: Welsh & Katz, Ltd

20080159736 - Light source device, illuminating device, monitoring apparatus, and projector: A light source device includes: a light source unit emitting a light of a first wavelength; a wavelength converting element converting the light of the first wavelength into a light of a second wavelength different from the firs wavelength; an external resonator transmitting the light of the second wavelength emitted... Agent: Oliff & Berridge, Plc

20080159737 - Transceivers for testing networks and adapting to device changes: Test transceivers are disclosed for testing optical networks. The test transceivers generate one or more errors on a network in a specific, reproducible way, thereby enabling a tester to easily and readily identify whether network devices are operating properly, or prone to failure. A corrective transceiver is also disclosed. The... Agent: Workman Nydegger

20080159738 - Identifiable fibers optics: The present invention provides for an optical cable and methods for interconnecting modular components with optical fibers. Each optical fiber is electronically labeled with a unique serial number such that interconnections using the optical fibers can be accurately audited.... Agent: Patterson & Sheridan, LLP/ Lucent Technologies, Inc

20080159739 - Polarization mode dispersion compensator, polarization mode dispersion compensating method, and its application to optical communication system: The present invention provides a polarization mode dispersion compensator comprising: a compensating portion which includes a first polarization controller which performs polarization conversion on light propagating along an optical transmission line and a DGD (Differential Group Delay) emulator which adds a DGD to the light which is polarization-converted by said... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080159740 - Multi-dwelling unit optical fiber splitting unit: A multiple dwelling unit (MDU) optical fiber splitting unit (FBU). One or more fiber strands enters the FBU at the MDU. Each strand may be connected to a variable attenuator. Each strand is subject to a one to four split. Each of the four split fibers is connected to an... Agent: Verizon Patent Management Group

20080159742 - Dwdm optical network planning method: Various embodiments of the present invention are directed to a method for creating and optimizing a DWDM optical fiber network that is configured to service a set of demands associated with a region of interest. The method may include the following steps: 1) determining the highest aggregate demand from a... Agent: Verizon Patent Management Group

20080159741 - System, method and apparatus for polarization mode dispension compensation and demultiplexing polarization multiplexed signals: A polarization multiplex transmission system (10) comprises two optical signals (z1, z2) transmitted over the same optical fibre (15) at the same wavelength but with orthogonal polarizations. The system is characterised by receiving apparatus (10) which is operable to filter the two components with orthogonal polarization of the signal received... Agent: Coats & Bennett, Pllc

20080159743 - Method and system for controlling remote in a tdd optical repeater: A method and apparatus for transmitting data to an Access Point (AP) and a Mobile Station (MS) in a Time Division Duplex (TDD) optical repeater. A main donor generates a control frame for controlling a remote, upon receipt of data from the AP, and transmits the control frame to the... Agent: Cha & Reiter, Llc

20080159745 - Method and apparatus for assigning communication nodes to cmts cards: A method and apparatus for assigning nodes to CMTS cards in a communication system. In order to avoid bottlenecks and to efficiently use resources of the cards in a hybrid fiber-coax architecture, the nodes are assigned to the cards using linear programming techniques so as to distribute the traffic load... Agent: At&t Corp.

20080159744 - System and method for a subscriber-powered network element: A system for powering a network element of a fiber optic communication network. When communication data is transferred between a central office (CO) and a subscriber gateway using a network element to convert optical to electrical (O-E) and electrical to optical (E-O) signals between a fiber from the central office... Agent: James Albert Ward Law Offices

20080159746 - Optical signal distribution assembly with optical connector holder: A connector holder (22) suitable for use in a communications signal distribution system, comprising first and second parts between which an optical connector element may be secured, and which have means for locating the holder (22) in one of a number of different positions and/or orientations on a base or... Agent: Baker & Daniels LLP

20080159747 - Integral phase rule for reducing dispersion errors in an adiabatically chirped amplitude modulated signal: An optical transmitter is disclosed for transmitting a signal along a dispersive medium to a receiver. The optical transmitter generates adiabatically chirped profile having an initial pulse width and frequency excursion chosen such that high frequency data sequences include one bits that interfere destructively at a middle point of an... Agent: Workman Nydegger

20080159748 - Optical transmission system: An optical transmission system capable of time difference correction without increasing guard times, thereby improving optical packet transmission efficiency. An optical switching processor sets identical switching timing for all input ports thereof such that optical signals input from the input ports are switched at the same timing. During initialization, a... Agent: Staas & Halsey LLP

20080159749 - Optical communication system and optical transmitting apparatus for the same: An optical communication system includes an optical transmission apparatus and an optical receiving apparatus. The optical transmission apparatus includes an input port to receive an electric signal, a noise generator to generate noise, a transmission signal generator to generate a transmission signal by multiplexing the noise with the electric signal,... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080159750 - Memory card, imaging apparatus, and recording/reproducing apparatus: Disclosed is a memory card attached to an external apparatus for transmitting and receiving data via the external apparatus and an optical communication. The memory card includes a power-supply potential unit receiving electric power supply at a predetermined voltage from the external apparatus; a ground potential unit connected to a... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20080159751 - Optical transmission using semiconductor optical amplifier (soa): s

20080159752 - Fiber optical communications systems employing phase incoherent sources: The invention includes a transmitter and transmission method for reducing inter-symbol interference (ISI) related to fiber nonlinearity and dispersion in a fiber optic communication system, such as a high bit rate, long haul optical communications system. A data modulated phase incoherent, low intensity noise optical signal exhibits reduced ISI at... Agent: Patterson & Sheridan, LLP/ Lucent Technologies, Inc

20080159753 - Optical transmission system with automatic signal level adjustment and startup functions: An optical transmission system with automatic startup functions to optimize the power level of optical signals entering each optical amplifier and operate those amplifiers in appropriate mode. In the process of starting up an optical transmission system, upstream and downstream optical transmission devices set up themselves under the coordination of... Agent: Staas & Halsey LLP

20080159754 - Modulation light signal generating device and fsk modulation signal generating device: The above-mentioned object is solved by a modulated optical signal generator (1) provided with an optical modulator (2), a first optical filter (3), and a second optical filter (4), wherein a frequency of a multiplying optical modulation outputted from the second optical filter (4) is controlled by controlling the frequency... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080159755 - Optical signal receiving apparatus: An optical signal receiving apparatus, able to detect a bit rate of a received signal by a low cost and able to change to a suitable reception band width corresponding to the received bit rate, provided with a bit rate detection circuit detecting a bit rate from a consumed current... Agent: Staas & Halsey LLP

20080159756 - Configurable post-amplifiers that are capable of being configured to perform either substantially linear or limiting amplification for use in optical receivers: Configurable amplifiers for optical receivers and transceivers are disclosed. In one aspect, a configurable amplifier may be coupled with an output of a current-to-voltage converter to receive a voltage. The configurable amplifier may be capable of being configured to use either a substantially linear amplifier portion or a substantially non-linear... Agent: Intel/blakely

20080159758 - Optical orthogonal frequency division multiplexed communications with coherent detection: The present invention provides a system and method of optical communications that utilize coherent detection technique and optical orthogonal frequency division multiplexing for phase encoded data transmission. In particular the invention addresses a device and method for digital polarization compensation of optical signals with up to 100 Gb/s transmission rate... Agent: Celight, Inc.

20080159757 - Receiver for optical communications, comprising a nonlinear equaliser: The present development includes a first element of an optical fibre entrance by which an information carrying signal is transmitted, an optical detector block, a non-linear equalizer block and a final processor block. The development includes an electrical non-linear equalizer block, connecting the output of the optical detector block and... Agent: Berenbaum, Weinshienk & Eason, P.c