Optical communications inventions 01/09

20090028548 - Operation and construction method of network using multi-rate interface panel: The present invention provides a network at a low cost with a reduced number of components and simple management among networks anticipated to become more and more complicated, the network being capable of quick pass change upon service addition/change and failure occurrence. Namely, the present invention realizes a network configuration... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090028549 - System and method for suppressing beat noise in line monitoring equipment: A system and method for suppressing beat noise in line monitoring equipment. A wavelength dither generator wavelength modulates a carrier wavelength of a test signal laser transmitter. A test code is modulated on the dithered carrier wavelength to provide a test signal output of the line monitoring equipment.... Agent: Tcm/gtpp

20090028550 - System and method using differential loop gain for fault identification in line monitoring equipment: A system and method using differential loop gain for fault analysis in line monitoring equipment. Differential loop gain data is calculated from loop gain data, and fault analysis is conducted using differential loop gain data, e.g. by comparing the differential loop gain data to predefined fault signatures.... Agent: Tcm/gtpp

20090028551 - Dynamic digital diagnostic alerts: Alerts, such as laser driver current alarms, are triggered in an optoelectronic device based on dynamic digital diagnostics, such as operating temperature. Optoelectronic devices may execute microcode structured to represent a formulaic relation between a first parameter (e.g., temperature) and an indicator value for a second parameter (e.g., laser driver... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090028554 - Method and apparatus for sampled optical signal monitoring: Monitoring an optical signal comprises sampling the optical signal from two or more distinct tap points to retrieve a sample set. Multiple such sample sets are obtained over time. A joint probability distribution or phase portrait of the sample sets is assessed for indications of optical signal quality. The tap... Agent: Snell & Wilmer LLP (oc)

20090028553 - Method and apparatus of detecting abnormal behavior in a passive optical network (pon): Environmental conditions, such as temperature or wind load, may cause a fiber-optic link to expand or contract, resulting in upstream communications drift. Current methods compensate for such drift assuming it is caused by environmental conditions; however, these methods cannot determine abnormal behavior due to fiber faults that magnify the effect... Agent: Hamilton, Brook, Smith & Reynolds, P.c.

20090028552 - System and method for wavelength monitoring and control: A system and method using for wavelength monitoring and control in a WDM optical communication system. An aggregate channel monitor detects crosstalk between channels in the aggregate signal. Channel spacing may be modified by an element management system in response to the output of the aggregate channel monitor.... Agent: Tcm/gtpp

20090028555 - Optical filter: An apparatus and method are provided for filtering an optical signal by wavelength. An initially polarised signal is passed through a DGD element effective to alter the polarisation state of the components of the signal according to wavelength. A polarisation filter (polariser) is then provided to attenuate light having given... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090028556 - Method and apparatus for monitoring the power level of two or more optical transmitters: Methods and apparatus for monitoring the power level of one or more optical emitters are provided. In some embodiments, optical signals from two or more optical emitters are directed at different regions of a photo detector. The photo detector may include two or more spaced contacts that are adapted to... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090028557 - Insertable emi shield clip for use in optical transceiver modules: The embodiments disclosed herein relate an insertable shield clip for use in controlling electromagnetic interference in an optical transceiver module. The optical transceiver module may include a shell that houses first and second optical subassemblies and an enclosure that cooperates with the shell in defining a covering for the optical... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090028558 - Method for providing visible light communication in a visible light communication system: A method of providing a visible light communication in a data link layer of a visible light communication system adopting an infrared communication link connection protocol includes: broadcasting a discovery exchange station identification (D-XID) frame; generating a visible frame to provide a visibility to a link for a specified waiting... Agent: Cha & Reiter, Llc

20090028559 - Method and system for designing a network: A design of a network is determined to connect a plurality of central offices (COs) to a video hub office (VHO) using a plurality of fiber path pairs, respectively. In the design, each of the fiber path pairs is a lowest-cost, node-disjoint path pair between its respective one of the... Agent: At&t Legal Department, Attn: Patent Docketing

20090028561 - Method, system and node device for realizing service protection in automatically switched optical network: A method for realizing service protection in the automatically switched optical network includes following steps: after any defect occurs on the working paths that carry the service, the first node and the last node of the working paths sends the requests to restore the paths setup in opposite directions, respectively;... Agent: Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd)

20090028560 - System and method for implementing dynamic scheduling of data in a non-blocking all-optical switching network: A non-blocking optical matrix core switching method that includes maintaining a schedule for routing data through an optical matrix core and receiving and analyzing reports from peripheral devices. The method determines whether the schedule is adequate for the current data traffic patterns and if the schedule is not adequate a... Agent: Connolly Bove Lodge & Hutz LLP

20090028562 - Bidirectional optical amplifier arrangement: The invention relates to a bidirectional optical amplifier array (VA) which is preferably used in a passive optical network (PON) system, is disposed between a first line termination (OLT) and a second line termination (ONU), and is penetrated by an optical downstream signal (OSD) in one direction and an optical... Agent: Bell, Boyd & Lloyd, LLP

20090028563 - Optical transmission/reception device and optical communication system using the same: An optical transmission/reception device includes at least one light emitting portion and at least one light receiving portion on the same substrate. The light emitting portion includes at least a lower multilayer reflector and an active layer provided on the lower multilayer reflector. A metal layer including a plurality of... Agent: Mcdermott Will & Emery LLP

20090028564 - Dual broadcast and narrowcast systems and methods: Various embodiments of dual broadcast and narrowcast systems and methods are disclosed. One method embodiment, among others, comprises the steps of receiving optical narrowcast signals and converting the optical narrowcast signals to a radio frequency (RF) domain at a first photodiode, receiving optical broadcast signals and converting the optical broadcast... Agent: Scientific-atlanta, Inc. Intellectual Property Department

20090028565 - Monitoring mechanisms for optical systems: This application describes optical monitoring devices and applications in optical systems for monitoring various optical parameters of light, including the signal to noise ratio, the degree of polarization, and the differential group delay (DGD).... Agent: Fish & Richardson, Pc

20090028566 - System and method for signaling between elements in an undersea optical communication system and system incorporating the same: A system for signaling between elements in an undersea optical communication system including a cable signal generator. The signal generator includes line current modulation circuitry configured to impart modulation in line current provided on a power conductor of the transmission cable. A method of signaling between elements in an undersea... Agent: Tcm/gtpp

20090028567 - Method and device for tunable optical filtering: An optical device includes an optical splitter having an input port, a first output port, a second output port and a resonant structure including at least a resonator, the optical splitter being adapted to receive at the input port a WDM optical signal and to output at the first and... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090028568 - Multi-protocol infrared receiver: A receiver includes a single infrared (IR) sensor, which is coupled to sense an IR signal carrying data and to produce an electrical signal responsively to the IR signal. The receiver further includes multiple receiver channels arranged to accept the electrical signal from the single IR sensor, each receiver channel... Agent: Abelman, Frayne & Schwab

20090028571 - Electrical signal transmission module, method of transmitting electric signals and electrical inspection apparatus having the same: An electrical signal transmission module includes a plurality of optical signal lines and a plurality of electrical signal lines. The plurality of optical signal lines converting a first externally input electrical signal into an optical signal, transmitting the optical signal, converting the optical signal back into the first electrical signal,... Agent: F. Chau & Associates, Llc

20090028570 - Optical-to-electrical converter and analog-to-digital converter thereof: An analog-to-digital converter (ADC) for converting an optical signal into an electrical signal is disclosed. The ADC includes a detection module, a first P-type metal oxide semiconductor (PMOS) transistor, a first N-type metal oxide semiconductor (NMOS) transistor, a first switch unit, and an output module. The first PMOS transistor and... Agent: Jianq Chyun Intellectual Property Office

20090028569 - Optimum dc bias for an electro-optic switch: A method for balancing optical transmission for a first ON state and a second ON state of an electro-optic switch having an RF input port and a DC port, in one implementation, comprises the steps of associating a positive RF voltage with the first ON state of the electro-optic switch,... Agent: Patti, Hewitt & Arezina Llc

20090028572 - Free-space optical receiving apparatus and electronic device equipped with that apparatus: A free-space optical receiving apparatus in one embodiment of the invention is provided with: a signal receiving light-sensitive element that converts an infrared signal to an electric current signal; a current-voltage conversion circuit that converts the electric current signal to a voltage signal; a shared processing circuit that amplifies this... Agent: Nixon & Vanderhye, Pc

20090028573 - Mobile communications via an optical signal during adverse atmospheric conditions: A communications system for wireless transceiving of information, comprising at least one multiple optical beam scanning array transceiver located in a satellite for wirelessly transceiving the information; and at least two terminals at diverse locations capable of wirelessly transceiving the information between the terminals and the satellite, and an apparatus... Agent: Ernest R. Graf, Office Of Patent Counsel The Johns Hopkins University

20090028574 - Self-testing optical transceiver: Systems and methods for an optical transceiver module to perform one or more diagnostic self-tests without the assistance of a host computing system. The optical transceiver module includes at least one processor, a persistent memory and a system memory. The persistent memory, which is coupled to the at least one... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090028575 - Fiber orientation for optical transceiver: A compact optical transceiver is provided in which a substrate provides for an alignment surface for optical fibers and a lens assembly provides the necessary optical paths for coupling to photodiode and photodetector structures. Appropriate electrical connections on the substrate enable the substrate to be directly connected to a printed... Agent: Pete Kirkpatrick, Aprius, Inc.

20090028576 - Frequency-domain equalization of the fiber optic channel: Systems and methods for frequency-domain compensation in optical communication systems. In pre-equalization embodiments, the transmitter transforms the data stream into a frequency domain signal and applies a compensation filter before transforming it back into a pre-distorted time domain signal. As the pre-distorted time domain signal propagates through the optical channel,... Agent: Krueger Iselin LLP (sc)

20090028577 - Optical repeater converting wavelength and bit rate between networks: An optical repeater which includes a wavelength converter and a bit rate converter. The wavelength converter converts a wavelength of an optical signal from a first optical network to a wavelength of a second optical network. The bit rate converter converts a bit rate of the optical signal from the... Agent: Staas & Halsey LLP

20090028578 - Hybrid optical and electrical fiber optic link linearizer: Techniques and systems for reducing nonlinear distortions in an output optical beam from an optical transmitter by using both electrical pre-distortion compensation and optical compensation.... Agent: Edell, Shapiro & Finnan, Llc

20090028579 - Fiber optic link having an integrated laser and photodetector chip: A fiber optic communications link is disclosed that can include first and second nodes operably connected by a multi-mode optical fiber and that utilizes two distinct optical wavelengths for enabling the bidirectional transfer of data via the optical fiber between the first and second nodes. Each node can include an... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090028581 - Burst mode optical receiver and system and method therefor: A communications system includes an optical receiver for receiving optical signals and for converting the optical signals into electrical signals, a transimpedance amplifier (“TIA”) for filtering the electrical signals, a limiting amplifier coupled with the TIA, an automatic threshold control (“ATC”) coupled with the TIA for providing a reference voltage... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090028580 - Optical reception apparatus and controlling method thereof: The optical reception apparatus of the invention branches into two an RZ-DQPSK optical signal input from an optical transmission path via an optical amplifier, respectively sends this to delay interferometers and photoelectric converters on a pair of arms, separately detects a number of generated errors for the signals propagating through... Agent: Staas & Halsey LLP

20090022489 - Optical ring networks having node-to-node optical communication channels for carrying data traffic: Techniques, apparatus and systems for optical communications, including fiber ring networks with protection switching to maintain optical communications when an optical failure occurs and to automatically revert to normal operation when the optical failure is corrected, fiber ring networks that provide a circulating optical probe signal at an optical probe... Agent: Fish & Richardson, Pc

20090022490 - Method and device for data-flow protection of optical interface in data communication equipment: A method for data-flow protection of an optical interface in data communication equipment includes: receiving an optical-signal from a source-neighboring device, then duplicating the received optical signal into two duplicated optical signals. One of the optical signals is sent to a protected device for processing. According to the protected device... Agent: Harness, Dickey & Pierce, P.L.C

20090022491 - Light collecting device and single-photon generation device: A light collecting device is disclosed that is able to couple light from a light emission structure to an optical fiber at low loss. The light collecting device includes an excitation light source for emitting excitation light to an optical fiber; a light condensing optical system which condenses the excitation... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20090022492 - Dqpsk transmitter with parallel precoder and high-speed dqpsk data stream realignment: The present invention utilizes field programmable gate arrays (FPGAs) to implement a parallel differential quadrature phase shift keying (DQPSK) precoder and a DQPSK optical transmitter with an automatic realignment process. The present invention can perform DQPSK preceding, modulation, and data stream realignment at any lower rate, and its upper rate... Agent: Clements Bernard Miller

20090022493 - Pon equipment capablel of displaying connection state and logical link identifier: A passive optical network (PON) equipment capable of displaying a connection state and a logical link identifier (LLID) is provided, which aims at solving a problem that equipments in the conventional PON system cannot display connection state and LLID. The PON equipment displays the connection state and the LLID through... Agent: Bacon & Thomas, Pllc

20090022494 - Optical network terminal, method for configuring rate limiting attributes of ports, and method for processing packets: The present invention relates to an optical network terminal (ONT), a method for configuring rate limiting attributes of ports, and a method for processing packets. The ONT includes a passive optical network (PON) protocol processing module, and a user network interface (UNI) module, which are connected through an internal interface.... Agent: Brinks Hofer Gilson & Lione

20090022495 - Deployment of electro-optic amplitude varying elements (aves) and electro-optic multi-functional elements (mfes) in photonic integrated circuits (pics): Electro-optic amplitude varying elements (AVEs) or electro-optic multi-function elements (MFEs) are integrated into signal channels of photonic integrated circuits (PICs) or at the output of such PICs to provide for various optical controlling and monitoring functions. In one case, such PIC signal channels may minimally include a laser source and... Agent: Infinera Corporation

20090022496 - Apparatus and method for arranging communication links in visible light communication: A method and apparatus for arranging communication links in visible light communication increases the user visibility of the system. The method includes the steps of: (a) synchronizing, by a visible light communication (VLC) exchange identification (XID) frame, (b) transmission timing of a primary device and a secondary device in an... Agent: Cha & Reiter, Llc

20090022497 - High-speed optical transceiver for infiniband and ethernet: The present invention provides a high-speed 100G optical transceiver for InfiniBand and Ethernet with associated mapping to frame InfiniBand and Ethernet into GFP-T. The optical transceiver utilizes an architecture which relies on standards-compliant (i.e., multi-sourced) physical client interfaces. These client interfaces are back-ended with flexible, programmable Field Programmable Gate Array... Agent: Clements Bernard Miller

20090022498 - Optical transmission system: In the transmitting apparatus, phase modulation means phase-modulates a signal light from a signal source based on data. Polarization modulation means polarization-modulates the signal light which is phase-modulated by the phase modulation means so that the polarization directions of temporally adjacent unit data are orthogonal to each other. In the... Agent: Nec Corporation Of America

20090022499 - Optical signal to noise ratio system: The present invention provides a system for improving Optical Signal to Noise Ratio “OSNR” (208) of a transmission system using non gain-flattened optical amplifiers (101) and also provide an optically amplified Dense Wavelength Division Multiplexed “DWDM” transmission system that incorporates aforesaid system and has improved channel OSNR (208).... Agent: Buchanan, Ingersoll & Rooney Pc

20090022500 - Method and system for optoelectronics transceivers integrated on a cmos chip: Methods and systems for optoelectronics transceivers integrated on a CMOS chip are disclosed and may include receiving optical signals from optical fibers via grating couplers on a top surface of a CMOS chip, which may include a guard ring. Photodetectors may be integrated in the CMOS chip. A CW optical... Agent: Mcandrews Held & Malloy, Ltd

20090022501 - Method and apparatus for controlling tunable transmitter chirp: A fiber-optic transmission system includes a transmitter having a designed chirp value. The transmitter has first and second inputs for receiving first and second input signals, respectively, used to produce a modulated output signal. An optical fiber is responsive to the transmitter for receiving the output signal. A circuit asymmetrically... Agent: Emcore Corporation

20090022502 - Receiving apparatus: A receiving apparatus which suppresses threshold-voltage changes. A peak voltage detection block detects the peak voltage of a signal. A bottom voltage detection block detects the bottom voltage of the signal. A stop control block generates a stop signal for stopping the operations to detect the peak voltage and the... Agent: Staas & Halsey LLP

20090016712 - Optical signal quality monitor for a high-bit rate signal: An optical signal quality monitor includes a splitter splitting an input optical signal into two signals; a low-frequency converter converting one split optical signal to a low frequency signal by modulating the optical signal with a frequency offset signal; and an intensity ratio calculator calculating an intensity ratio between the... Agent: Rabin & Berdo, PC

20090016713 - Method, apparatus, system, and computer program to debug an optical network terminal using diagnostic optical network terminal: A method of detecting a problem in a communication network that supports at least one communication service communication service is provided. The method includes disconnecting a suspect component from the network, and replacing the suspect component with a diagnostic component configured to have the same network identification information as the... Agent: Fitzpatrick Cella (tellabs)

20090016714 - System and method for performing in-service fiber optic network certification: A system and method for embedding or multiplexing an in-service optical time domain reflectometry (ISOTDR) or in-service insertion loss (ISIL) session. A preferred embodiment embeds the sessions using the same wavelength as the data traffic for point-to-point or point-to-multipoint optical fiber networks without interrupting or affecting the primary data transmission... Agent: James Albert Ward

20090016716 - Fiber array unit with integrated optical power monitor: A technique for monitoring optical power in a fiber array unit having a plurality of optical transmission waveguides terminating at an edge thereof for carrying optical signals to and/or from a PLC. A tapping filter is placed within a slit formed in the substrate and interrupting the transmission channels, thereby... Agent: Heslin Rothenberg Farley & Mesiti PC

20090016715 - Power over optical fiber system: A system for providing power to remote equipment where a transmit unit having lasers transmits laser light over optical fiber to a receive unit having photovoltaic receivers. The photovoltaic receivers convert the laser light to electrical energy for the remote equipment. The receive unit also sends a feedback signal to... Agent: Lawrence S. Cohen, Esq. Law Office Of Lawrence S. Cohen

20090016717 - Modular add/drop multiplexer including a wavelength selective switch: Consistent with the present invention, tunable demultiplexers are provided in WSS-based add/drop multiplexer. The tunable demultiplexers are modular and thus allow the add/drop multiplexer to be readily expandable, and facilitate flexible add/drop capabilities whereby a channel present on any input line to the WSS can be dropped and supplied to... Agent: Clements Bernard Miller

20090016719 - Optical transponder interfacing multiprotocol signal and method of interfacing multiprotocol signal: Provided are an optical transponder that interfaces a multiprotocol signal and a method of interfacing a multiprotocol signal. The optical transponder includes: an optical transceiver, which optical/electrical converts and multiplexes/demultiplexes an input signal; a reception clock generator, which generates a clock on a reception path; a transmission clock generator, which... Agent: Lahive & Cockfield, LLP Floor 30, Suite 3000

20090016718 - Wireless distribution of passive optical network signals: Systems, methods, and software are described for wirelessly distributing data from a Passive Optical Network (PON). The system includes a PON for transmitting an optical signal. The system further includes a distribution terminal coupled with the PON. The distribution terminal is to receive the optical signal, convert the optical signal... Agent: Townsend And Townsend And Crew LLP Viasat, Inc (client #017018)

20090016720 - Problem detection device at onu end in pon system and method thereof: A problem detection device at an optical network unit (ONU) end in a passive optical network (PON) system and a method thereof are provided, which aim at solving the problem that the user cannot check out photo-physical data on the physical architecture, logical signal information on the logical architecture, and... Agent: Bacon & Thomas, PLLC

20090016721 - Method and apparatus for enhanced power diagnostics: Example embodiments of the invention provide a system for monitoring a battery backup unit (BBU) deployed in a network. The BBU typically communicates in a unidirectional manner with an external device, such as an Optical Network Terminal (ONT), is able to communicate in a bidirectional manner. The useful improvements of... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20090016722 - Ont discovery in a dwdm hybrid pon lt configuration: A method, a computer readable medium, and a system for discovering an Optical Network Terminal (ONT) in a Dense Wave Division Multiplex (DWDM) hybrid Passive Optical Network (PON) Line Terminal (LT), comprises implementing, by an Optical Line Termination (OLT), a ranging procedure on at least one downstream link, wherein the... Agent: Alcatel Lucent Intellectual Property & Standards

20090016723 - Optical-wireless hybrid transmission system and optical-wireless hybrid transmission method: An optical transmitter of an optical-wireless hybrid transmission system according to the invention outputs a first single-mode optical signal (center frequency: fC1) to an optical receiver, generates a polarization-coupled optical signal by orthogonal-polarization-coupling a second single-mode optical signal (center frequency: fC2) with a third single-mode optical signal (center frequency: fC3)... Agent: Harness, Dickey & Pierce, P.L.C

20090016724 - Multimode optical transmission system and multimode optical transmission method: Provided is a multimode optical transmission system capable of reducing an influence of multimode dispersion occurring when an optical signal is transmitted in multimode. Light sources (101 to 10m) respectively convert inputted electrical signals into a plurality of optical signals respectively having different wavelengths, and respectively output the plurality of... Agent: Wenderoth, Lind & Ponack L.L.P.

20090016727 - Optical transmission apparatus: An optical transmission apparatus includes a reception part for receiving a wavelength division multiplexed (WDM) signal reached via optical amplifiers; a measuring part for measuring an optical power level of each wavelength of the WDM signal received by the reception part; a determination part for determining whether an amount of... Agent: Staas & Halsey LLP

20090016726 - Optical wavelength multiplexing access system: According to the present invention, a star-type wavelength multiplexed communication network using optical TX/RX devices capable of assigning the wavelengths can be provided without using the monitoring light. In an embodiment of the present invention, an optical TX/RX device for transmitting and receiving a wavelength-multiplexed signal light comprises an optical... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090016725 - Wavelengths multiplexer method and apparatus for optical logging tools: A wavelengths based multiplexer for an optical logging tool method and apparatus comprising a plurality of thin film filter sets and architecture to perform optical wavelength multiplexing without bending an optical fiber within the multiplexer. This enables the multiplexer to be used in a down hole, well logging, tool environment.... Agent: Schlumberger K.k.

20090016728 - Method and system for pairing a remote control with a device: Techniques for pairing a remote control to a device are disclosed. After a specific button is pressed or buttons are pressed in a specific order, a remote control is caused to enter a re-programming mode. In the mode, the transmitting power of the remote control is significantly reduced, resulting in... Agent: Shemwell Mahamedi LLP

20090016729 - Frequency selective mmw source: The present invention relates to the design and operation of a frequency selective electrooptic source. In accordance with one embodiment of the present invention, the electrooptic source comprises an optical signal generator, optical circuitry, and at least one optical/electrical converter wherein the optical signal generator comprises a plurality of optical... Agent: Dinsmore & Shohl LLP

20090016730 - Photon audio amplifier and fiber link for audio systems: Systems and methods to minimize signal loss and distortions with connections of audio sources and speakers are disclosed. Fiber optic cables are used instead of conventional cables. The audio signals are kept always in the analog domain, no matter if they are in optical or electric format. The strength of... Agent: Saile Ackerman LLC

20090016731 - Apparatus and method of signal detection in an optical transceiver: The present invention includes an optical transceiver having a fiber module with an optical data input and an electrical data output. The fiber module further includes a signal detect output that indicates the receipt of valid optical data. A physical layer device having a receive input is coupled to the... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20090016732 - Method for driving surface emitting semiconductor laser, optical transmission module, and handheld electronic device: Provided is a method for driving a surface emitting semiconductor laser including an active region that generates light, a resonator structure disposed such that it sandwiches the active region, and a driving electrode that provides power to the active region. The surface emitting semiconductor laser has an internal resistance defined... Agent: Fildes & Outland, P.C.

20090016734 - Optical waveguide holding device and optical transceiver: A disclosed optical waveguide holding device is attached onto a printed circuit board of an optical transceiver that performs conversion between an electric signal and an optical signal. The optical waveguide holding device holds an optical waveguide between an external optical fiber and a photoelectric conversion unit attached onto or... Agent: Staas & Halsey LLP

20090016733 - Optical waveguide holding member and optical transceiver: An optical transceiver using an optical waveguide holding member is disclosed. The optical transceiver includes a printed circuit board and the optical waveguide holding member. Photoelectric conversion elements are formed in the printed circuit board. An optical waveguide including core members is formed in the optical waveguide holding member. The... Agent: Staas & Halsey LLP

20090016735 - Optelectronic sensor: An optoelectronic sensor includes at least one light transmitter for the transmission of light signals into a monitored zone, at least one light receiver for the reception of light signals transmitted from the light transmitter and a control device for the generation and/or influencing of the light signals and for... Agent: The Nath Law Group

20090016736 - Systems and methods for transmitting quantum and classical signals over an optical network: Systems and methods for transmitting quantum and classical signals over an optical network are disclosed, wherein the quantum signal wavelength either falls within the classical signal wavelength band, or is very close to one of the classical signal wavelengths. The system includes a deep-notch optical filter with a blocking bandwidth... Agent: OpticusIPLaw, PLLC

20090016737 - Electronic dispersion compensation systems and methods: An electronic dispersion compensation module may perform one or more electronic dispersion compensation solutions. The electronic dispersion compensation module may include a solution control module. The solution control module may configure the electronic dispersion compensation module to perform an electronic dispersion compensation solution using data indicating a bit error rate.... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090016738 - Compact all-optical clock recovery device: A clock recovery device adapted to recover at least one clock signal from an optical input signal. The input signal includes at least one data signal. The clock recovery device-includes a first waveguide, a first optical resonator coupled to the first waveguide, a second optical resonator coupled to the first... Agent: Venable LLP

20090016740 - Method and apparatus for compensating for fiber nonlinearity in a transmission system: A transmitter includes a frequency modulated laser. An optical spectrum reshaper (OSR) is positioned to receive the frequency modulated signal and has a transmission function effective to convert the frequency modulation to amplitude modulation. An optical fiber channel has a first end positioned to receive the filtered signal and a... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090016741 - Optical communication: The present invention relates to a method of optical communication, in particular optical communication involving spectral filtering in a passive optical network. The method includes the steps of: (i) performing a first spectral filtering function on a source signal having a spectral width so as to generate a plurality of... Agent: Nixon & Vanderhye, PC

20090016739 - Pattern effect reduction of optical signals: A passive optical equalizer and a predistortion technique are employed to reduce pattern effect in optical signals which result from narrow filtering.... Agent: Brosemer, Kolefas & Associates, LLC (necl)

20090016742 - Optical transmission module, optical transmission apparatus, and structure for fixing member: An optical transmission module mounted pluggably to a cage having an opening. The optical transmission module comprises a gasket on at least a part of an outer periphery of the module. The gasket is deformed depending on temperature change. The gasket is deformed according to temperature rise in a direction... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090010640 - Audio/video signal repeater: An AV signal repeater includes a casing having multiple opening defined therein. A printed circuit board (PCB) is secured in the casing. The PCB has at least one signal connector and at least one terminal electrically mounted thereon. Each of the signal connector and the terminal is partially received in... Agent: Connolly Bove Lodge & Hutz, LLP

20090010641 - Method and apparatus for loading, detecting, and monitoring channel-associated optical signals: A method and apparatus for loading, detecting, and monitoring channel-associated signals are provided. Channel-associated signals are identified with spread spectrum codes in the electrical domain, and after being modulated to an optical service signal at respective loading points separately, the channel-associated identification signals are transmitted in the optical channel along... Agent: Brinks Hofer Gilson & Lione

20090010642 - Method for measuring fiber length, optical line terminal and optical network system: A method for measuring fiber length, an optical line terminal and an optical network system. The method for measuring fiber length according to the embodiment of the present invention includes the following steps: Sending the first message to an optical network device at the subscriber side; —Receiving the second message,... Agent: Brinks Hofer Gilson & Lione

20090010643 - Method and apparatus for identifying faults in a passive optical network: Component malfunctions in passive optical networks (PON) can increase bit error rates and decrease signal-to-noise ratio in communications signals. These faults may cause the receivers of the signals, either the optical line terminal (OLT) or optical network terminals (ONTs), to experience intermittent faults and/or may result in misinterpreted commands that... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20090010644 - Integrated optical communication and range finding system and applications 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

20090010645 - Node device and label management method in optical transmission network: A node device in an optical transmission network where a manually set path and an ADP (autonomous decentralized protocol) set path coexist, wherein the manually set path is set by centralized control and the ADP set path is set by autonomous decentralized processing, the node device including: a label memory... Agent: Nec Corporation Of America

20090010646 - Optical pulse time spreading device: An optical pulse time spreading device includes S optical pulse time spreading elements that spread input optical pulses into trains of (N×j) chip pulses, where j is an integer greater than zero, S is an integer greater than one, and N is an integer equal to or greater than S.... Agent: Rabin & Berdo, PC

20090010647 - Method and apparatus for routing communications in a mesh network: A method includes subdividing a mesh having a plurality of interconnected nodes into a plurality of regions. Each region has an associated primary node. A pre-determined path segment is defined between at least two primary nodes. A primary path between at least two primary nodes is selected utilizing only primary... Agent: Davis & Associates

20090010648 - Methods and apparatus for upgrading passive optical networks: An optical network system can be used to update legacy passive optical networks by adding an optical transmitter, blocking filter, and/or pluggable or unpluggable optics. In one embodiment, an optical network system, including several optical transmitters and receivers, multiplexers, demultiplexers, erbium-doped fiber amplifier, and blocking filter, may be employed. The... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20090010649 - Optical access network with legacy support: An optical access network system can be used to upgrade legacy passive optical networks by subdividing currently used optical bands (e.g., C-, S-, or O-bands) into subbands to support more wavelengths. The subbands can be used to provide various current or emerging services to end users. Optical transmitters may selectively... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20090010650 - Passive optical network system and communication method therefor: In a passive optical network system in which communication signals from a master station to a plurality of subsidiary stations are multiplexed by time division and transmitted, after converting (modulating) data with a high transmission speed to a low transmission speed, a base speed, in the master station, a header... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20090010651 - Optical transceiver module having wireless communications capabilities: An optical transceiver module includes a wireless communications device that provides the transceiver module with the ability to receive wireless signals in and/or transmit wireless signals from the optical transceiver module. The wireless communications device may have various configurations for providing various capabilities, such as, for example, a wireless modem,... Agent: Kathy Manke Avago Technologies Limited

20090010654 - Communication link apparatus and method for maintaining visibility in visible light communication: A system and method for continuing a communication link while maintaining visibility in visible light communication. A frame is transmitted by a sender for establishing a communication link before data transmission to a receiver by a sender. A receiver sends a response frame that reports on establishment of the communication... Agent: Cha & Reiter, LLC

20090010653 - Optical module: According to an aspect of the embodiment, an optical module includes a case, an optical transceiver part in the case, a radiating part on the case; a thermal conductive sheet having a property of transferring and having a first end and second end; a first fixing part for fixing the... Agent: Staas & Halsey LLP

20090010652 - Optical module and optical transceiver: The present invention provides an optical communication module and the like in which a plurality of lead terminals necessary for the optical communication module is collected in one direction to effectively process the increased internal wiring. A plurality of lead terminals are arranged in a projecting manner over two stages... Agent: Nec Corporation Of America

20090010655 - Optical communications circuit current management: An optical communications circuit has a communications light signal source and a heat pump coupled to cool the signal source. A controller monitors a current and a temperature of the signal source, and regulates the temperature. The controller updates a heat pump control limit parameter for the heat pump, based... Agent: Intel/bstz Blakely Sokoloff Taylor & Zafman LLP

20090010656 - Optical waveform measurement system and optical waveform measurement method: In an optical waveform measurement system, a phase comparator compares phases between an electric signal output from a PD and an electric signal output from a mixer, and outputs a signal having an amplitude proportional to the phase difference of the two electric signals to a VCO via an LPF,... Agent: Staas & Halsey LLP

20090010657 - Optical transmission system and optical repeater: An optical repeater connected to an optical transmission line between an optical network unit having an ONU function on the side of a subscriber and an optical line termination (OLT) on the side of a center includes first electrical/optical conversion means connected to a first optical transmission line on the... Agent: Amin, Turocy & Calvin, LLP

20090003826 - Optical sub-assembly with electrically conductive paint, polymer or adhesive to reduce emi or sensitivity to emp or esd: Disclosed are various embodiments of an optical wavelength division demultiplexer or multiplexer sub-assembly configured to receive or transmit optical signals conveyed thereto or therefrom by a fiber optic cable. Selected portions of external surfaces of the sub-assembly are coated with an electrically conductive paint, polymer or adhesive to provide an... Agent: Kathy Manke Avago Technologies Limited

20090003827 - Optical switching device: An optical switching device the size and costs of which are reduced by decreasing the number of switching elements and which can flexibly accommodate the expansion of the number of ports. An optical demultiplexing section has 2n (n=1, 2, 3, . . . ) input ports and 2m (m>n) output... Agent: Staas & Halsey LLP

20090003828 - Systems and methods for host identification: A system and process may include assigning a unique host identifier to a host that is a node of a network. The host is adapted to host at least one network interface. The system and process may further include creating a host/guest relationship for each hosted network interface by associating... Agent: Verizon Patent Management Group

20090003829 - Dwdm hybrid pon lt configuration: A method, a system, and an optical transceiver board for use in a Passive Optical Network (PON), comprising a line terminal (LT) card comprising a plurality of transmitters and one receiver, a Dense Wave Division Multiplex (DWDM) combiner, wherein the LT card is communicably coupled to the DWDM combiner, and... Agent: Alcatel Lucent Intellectual Property & Standards

20090003830 - Loss of signal detection: An apparatus and a method for accurately detecting Loss of Optical Power (LOS) by noise power cancellation effect and optical power is measured at two output ports of an athermal periodic filter, wherein one output port in the optical frequency domain, is aligned with the signal channels of an input... Agent: Brosemer, Kolefas & Associates, LLC - (lucent)

20090003831 - Network interconnection system and method with separated controlling and bearing: A network interconnection system and method with separated controlling and bearing is presented. The system includes a radio access network (RAN) and a corresponding core network (CN). The RAN includes a base station network element and a base station controller (BSC). The BSC is set to separate the controlling and... Agent: Harness, Dickey & Pierce, P.L.C

20090003832 - Led light broad band over power line communication system: An LED light and communication system is in communication with a broadband over power line communications system. The LED light and communication system includes at least one optical transceiver. The optical transceiver includes a light support having a plurality of light emitting diodes and at least one photodetector attached thereto,... Agent: Vidas, Arrett & Steinkraus, P.A.

20090003833 - Optomechanical device and its optical transmitting element: An optomechanical structure includes a housing, a first optical transmitting element, a second optical transmitting element and a filtering element. The first optical transmitting element and the second optical transmitting element are disposed in the housing. The filtering element is disposed between the first optical transmitting element and the second... Agent: Birch Stewart Kolasch & Birch

20090003834 - Plastic optical fiber and manufacturing method thereof, and optical transmission system:

20090003835 - Optical clock recovery apparatus and method and birefringent medium: An optical clock signal recovery apparatus includes a mode-locked semiconductor laser that generates an optical pulse train polarized in a first direction. Optical components of the apparatus transmit a component of an input optical signal polarized in a second direction, perpendicular to the first direction, into the mode-locked semiconductor laser... Agent: Rabin & Berdo, PC

20090003836 - Micro-electro-mechanical systems and photonic interconnects employing the same: Various embodiments of the present invention are directed to micro-electro-mechanical systems and photonic interconnects employing micro-electro-mechanical systems. One micro-electro-mechanical system embodiment of the present invention includes a lens structure and an actuator. The lens structure includes a substantially transparent membrane having a flexible, curved surface, and a reservoir holding fluid... Agent: Hewlett Packard Company

20090003837 - End-to-end chromatic dispersion characterization of optically amplified link: An economic way of determining the chromatic dispersion along a link of a DWDM network is provided. A transmitter modulates the output signals of two lasers operating at two different wavelengths and the modulated output signals are sent into the link. Detectors at each one of a plurality of detection... Agent: Aka Chan LLP / Cisco

20090003838 - Optical data communication system having reduced pulse distortion and method of operating the same: An optical data transmission system and a method of communicating data. In one embodiment, the transmission system is part of an optical data communication system that includes: (1) an optical pulse transmitter configured to generate amplitude-modulated optical pulses at a fixed repetition rate, (2) an optical filter coupled to an... Agent: Hitt Gaines, PC Alcatel-lucent

20090003839 - Method, apparatus and data carrier for compensating for channel depletion of a multi-channel signal in an optical link or optical network: A method and apparatus for compensating for channel depletion of a multi-channel signal in an optical link or optical network comprising a chain of optical amplifiers. The method comprises determining channel depletion for each amplifier from the power of the input signal to the optical amplifier and the power of... Agent: Coats & Bennett, PLLC

20090003840 - Controlling a bias voltage for a mach-zehnder modulator: In one embodiment, the present invention includes a controller coupled to an optical modulator to receive a dither signal, determine a difference between the dither signal and a previous dither signal, determine a derivative of the difference with respect to a bias voltage difference between first and second bias voltages,... Agent: Trop Pruner & Hu, PC

20090003841 - Optical modulator: An optical modulator has an optical splitter for splitting an input light beam into a first and second light beam; a first and a second wave-guide arm connected to the optical splitter for receiving and transmitting therethrough the first and second light beam, respectively, the waveguide arms each including a... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090003842 - Chirped laser with passive filter element for differential phase shift keying generation: Apparatus and methods for driving a transmitter to generate DNPSK signals is disclosed including generating N data streams comprising data symbols and for each of a plurality of sets of N simultaneous data symbols of the N data streams, imposing signals are on L of a plurality of signal lines,... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090003843 - Optical transmitter and method for control the same: An optical transmitter that reduces the stimulated Brillion scattering occurred within a transmission optical fiber and a method to control the optical transmitter are disclosed. The optical transmitter with a type of the chirp managed laser diode (CML) comprises a laser diode modulated with a high frequency signal and biased... Agent: Smith, Gambrell & Russell

20090003844 - High speed optoelectronic receiver: A novel 100+ Gbit/s opto-electronic receiver uses hybrid integration of a photodiode and a demultiplexer. The photodiode converts a high speed optical data stream to an electrical data stream that is input to an electronic demultiplexer. The photodiode and the demultiplexer are connected together by a novel planar microwave transmission... Agent: Brosemer, Kolefas & Associates, LLC - (lucent)

20090003845 - Automatic threshold voltage adjustment circuit for dense wavelength division multiplexing or packet transport system and method of operating the same: An automatic threshold voltage adjustment circuit, a method of automatically adjusting threshold voltage and an optical receiver for an optical communication system. In one embodiment, the circuit includes: (1) an amplitude detector configured to detect an amplitude of a received optical signal, (2) a variable resistor coupled to the amplitude... Agent: Hitt Gaines, PC Alcatel-lucent