Optical communications inventions 01/08

20080025721 - Optical network terminal power failure management: Optical network terminal (ONT) power failure management. A system for permitting a customer of a telecommunication company, for whom fiber to the premises (FTTP) has been installed, to control operating features associated with operation of a battery backup unit (BBU) which is used, during power failure, for powering the ONT... Agent: Verizon Patent Management Group

20080025724 - Pon system, station side device and redundant method used for the same: t

20080025727 - Wavelength-multiplexing optical transmission system and wavelength-multiplexing optical transmission method: A wavelength-multiplexing optical transmission apparatus includes an optical-wavelength-information storing unit that stores optical wavelength information on an optical wavelength of an optical signal to be output from a transponder, and an optical-wavelength-information transmitting unit that transmits the stored optical wavelength information to the transponder via a connection cable. The transponder... Agent: Staas & Halsey LLP

20080025722 - Method for separation of packet networkmanagement domains: The present invention provides a mechanism and a method for indirectly controlling a packet handling device interface from an optical management system in an packet-optical network. A mechanism is provided for controlling a packet handling device, such as a router, interface from a management system indirectly, by using optical equipment... Agent: Aka Chan LLP / Cisco

20080025723 - System and method for creating cheap efficient high-speed home networks.: Broadband connections of end users to the Internet are becoming more and more common today, and the most common types of these fast connections are ADSL and Cable modems. These connections are typically still very slow compared to the speeds that are expected in the next few years and typically... Agent: Yaron Mayer

20080025725 - Fiber to the home broadband home unit: An apparatus and system are provided for delivering communication services such as video, data and telephony services to individual residential units. According to one embodiment, an optical network terminal (ONT) for providing communication services to a single residential unit comprises a passive optical network interface (PI) circuit, a residential service... Agent: Baker Botts L.L.P.

20080025726 - Optical transport network having a plurality of monolithic photonic integrated circuit (pic) semiconductor chips: A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input optically coupled to received all the signal outputs from the modulated... Agent: North Weber & Baugh LLP Carothers, W. Douglas

20080025728 - Coherent optical transceiver and coherent communication system and method for satellite communications: An optical transceiver is provided for optical communications with additive noise compensation. The system and method are disclosed for the additive noise cancellation, which is typically a vibration noise, caused by moving platform, where the transceiver is located. The transceiver comprises an additive noise sensor and a digital signal processing... Agent: Celight, Inc.

20080025729 - Optical transceiver precisely setting the transmission rate of the output optical signal: The present invention is to provide an optical transceiver that enhances and keeps the exactness of the transmission rate of the optical signal to be transmitted. The transceiver includes a rate adjustor, where the de-stuffing unit, the FIFO memory and the stuffing unit. The input electrical data are temporarily stored... Agent: Venable LLP

20080025730 - Method and apparatus for autonomous adaptation of an optical dispersion compensation (\"odc\") module: Optical transponders incorporating an optical dispersion compensator (“ODC”) to perform an adjustable, frequency dependent correction of an optical signal are described and claimed. The ODC is adjusted by a feedback controller that responds to information from at least one signal analyzer. Systems using similar ODC-equipped optical transponders are also described... Agent: Blakely Sokoloff Taylor & Zafman

20080025731 - Versatile compact transmitter for generation of advanced modulation formats: A system for generating a return-to-zero differentially-phase-shift-keyed (RZ-DPSK) optical signal comprising: a driver comprising an N-level digital multilevel transformer (DMT) configured to receive a two level digital electrical signal representing 1s and 0s and output a N-level electrical signal, wherein N>2; an FM source configured to receive the N-level electrical... Agent: Mark J. Pandiscio Pandiscio & Pandiscio, P.C.

20080025732 - Optical transmitter and optical transmission method: An optical transmitter and an optical transmission method includes a plurality of light-emitting elements, a plurality of light-receiving elements for monitoring optical outputs from the light-emitting elements, a linear operation circuit for calculating optical output monitor signals by removing crosstalk parts from a plurality of photoelectric conversion currents outputted from... Agent: Mcginn Intellectual Property Law Group, PLLC

20080025733 - Optical differential phase shift keying receivers with multi-symbol decision feedback-based electro-optic front-end processing: Novel differential-phase shift keying optical receivers are taught based on multi-symbol differential phase shift keying detection (DPSK) aided by decision feedback (DF) from the decision bits in earlier symbol intervals. In accordance with the invention, the DF is directed to an optical front-end comprising multiple Delay Interferometers (DIs) with multiple... Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw

20080019688 - Method and apparatus of routing convergence in control plane of an intelligent optical network: The embodiments of the invention provide a method of routing convergence in a control plane of an intelligent optical network, which includes: a function unit perceiving a service link state transmitting an alarm notification message indicating a failure in a service link to a routing protocol unit when the service... Agent: Marshall, Gerstein & Borun LLP

20080019690 - Method, system and apparatus for detecting failure of an optical network terminal of a passive optical network: A method for detecting a failure network terminal in a Passive Optical Network includes: changing timeslots assigned to potential failure network terminals one by one; and determining the failure network terminal according to uplink data frames sent by the potential failure network terminals whose timeslots are changed. Embodiments of the... Agent: Leydig Voit & Mayer, Ltd

20080019692 - Cross-connector for optical signals: A cross connector for the transparent switching of optical signals is disclosed, comprising a first switching module with one or several switching modules of varying granularity, such as patch panel, wavelength groups or/and wavelengths. A second switching device is connected in series with the first switching device and comprises a... Agent: Bell, Boyd & Lloyd, LLP

20080019693 - Open access service model using wdm-pon: Methods and apparatuses to provide an “Open access” service model using wavelength division multiplexing (“WDM”) passive optical networks (“PONs”) are described. A cross-connect is used to supply a first set of optical signals corresponding to a first service provider and a second set of optical signals corresponding to a second... Agent: Blakely Sokoloff Taylor & Zafman

20080019689 - Method for remote access of an optical network device in a passive optical network: The claimed invention provides a method of a remotely accessing a decentralized device in a conventional fiber to the premises network via a centralized display device operatively connected to an optical line terminal. The invention further provides the decentralized device adapted to be remotely accessed by the display device. The... Agent: Siemens Corporation Intellectual Property Department

20080019691 - Multiservice private network and interface modules for transporting, on such a network, data in different formats: A multiservice private network and interface modules (M1-M5). Each of said modules is dedicated to interfacing a specific terminal equipment (T1-T4, GTW; 310-380) in the multiservice private network. The interface modules (M1-M5) are connected to the terminal equipment on a one-to-one basis. Each interface module (M1-M5) is configured to send... Agent: Cohen, Pontani, Lieberman & Pavane

20080019694 - Wavelength division multiplexing passive optical network system: Disclosed is a wavelength division multiplexing passive optical network (WDM PON) system in which an optical signal outputted from a central office is injected into a Fabry-Perot laser diode (F-P LD) as the light source of an optical network unit, so that the output wavelength of the optical network unit... Agent: Cantor Colburn, LLP

20080019695 - Fiber and wire communication system: This invention provides a new architecture for a communication system between head-ends and end-users which expands bandwidth and reliability of the communication system. A mux-node receives communication signals from a head-end and forwards the received communication signals to one or more mini-fiber nodes. The connection to the head-end is via... Agent: At&t Corp.

20080019696 - Optical transmission system of ring type: The present invention relates to a ring type optical transmission system having a redundancy structure, which employs Wavelength Division Multiplexing (WDM). The system has a Central Office (CO) for generating optical signals of different wavelengths, multiplexing the optical signals and outputting a multiplexed optical signal, an optical coupler for dividing... Agent: Cantor Colburn, LLP

20080019697 - System, method, and computer program product for fiber access: A system, method, and computer program product for synchronizing time between a centralized controller device and at least one subscriber device on a fiber access network. The control layer of a network device is expanded, and additional messaging control is added via the transmission of data frames. The expansion prevents... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20080019698 - Method and apparatus for phostonic stack system for vehicle control/sense: An avionics system for a plane includes a plurality of nodes disposed throughout the plane, each node performing a function. The system includes an optical network in communication with the nodes and through which the nodes communicate. The system includes at least one of the nodes having a hardwired interpreter... Agent: Ansel M. Schwartz

20080019699 - Hybrid ir transmission system: A hybrid IR transmission system implements at least two IR transmission protocols with a common IR transceiver. The hybrid IR transmission system includes an IR decoding circuit, a common IR transceiver and a filter circuit. The IR decoding circuit includes an IrDA module for decoding IR signals in IrDA protocol... Agent: Kirton And Mcconkie

20080019700 - Optical transceiver: The present invention provides an optical transceiver which can be miniaturized while having a number of electronic components mounted on an electrical circuit board thereof. An optical transceiver comprises: a substrate having at least one electronic component mounted thereon; a base comprising a receptacle for connecting an optical connector; and... Agent: Sughrue Mion, PLLC

20080019701 - Railway monitoring system: A railway monitoring system firstly includes an optical fiber. A first part of the fiber is attachable to one of a pair of tracks of a rail, and a characteristic of the first part of the fiber is variable in correspondence to variance of a characteristic of said one track... Agent: Jacobson Holman PLLC

20080019702 - Laser optical device and control method of actuator: A laser optical device, having: a laser light emitting section to emit laser signal light moderated by information; a laser light receiving section to receive the laser signal light emitted from the laser light emitting section; a light condensing optical unit to conduct the laser signal light emitted from the... Agent: Sidley Austin LLP

20080019703 - Optical transmitter using nyquist pulse shaping: An optical data transmitter includes a symbol generator that generates a stream of symbols having a symbol rate. A Nyquist filter that is electrically connected to the symbol generator generates a Nyquist filtered stream of symbols. An optical modulator modulates an optical beam with the Nyquist filtered stream of symbols... Agent: Rauschenbach Patent Law Group, LLC

20080019704 - Interferometer-based chromatic dispersion monitor: An apparatus includes a first portion operable to convert an optical phase modulation component of a signal being transmitted through a fiber to a RF intensity modulation, the RF intensity modulation comprising a magnitude; and a second portion operable to determine a dispersion of the fiber based on the magnitude... Agent: Naval Research Laboratory Associate Counsel (patents)

20080019705 - Methods of achieving optimal communications performance: A system includes an optical transmitter that outputs an optical signal having a substantially Gaussian waveform and an optical receiver that is optically coupled to the optical transmitter and has an impulse response essentially matching the waveform. The impulse response and waveform preferably match in the time domain. The transmitter... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20080019706 - System and method for transmitting data on return path of a cable television system: An optical signal return path system includes a transmitter having a sample clock generator for generating a sample clock and an RF signal receiver for receiving and converting an analog RF data signal into a first data stream of digitized RF data samples at a rate determined by the sample... Agent: Workman Nydegger

20080013949 - Link connectivity verification method: A link connectivity verification message to recognize a physical link connection state is transmitted from the WDM to the PXC on a C-plane. The PXC transmits a link connectivity verification ACK message including information representing a physical link connection state, and the WDM transmits a cross-connect instruction message to cross-connect... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080013950 - Wavelength reconfigurable optical network: The invention provides a unified optical network architecture for metro and access communication networks, wherein a metro ring network interfaces access PONs through one or more reconfigurable Optical Add/Drop Multiplexers to provide wavelength-reconfigurable all-optical transmission of communication signals from the metro ring network to designated optical network units associated with... Agent: Teitelbaum & Maclean

20080013954 - Multifunctional and reconfigurable optical node and optical network: An optical node includes a reconfigurable optical add drop multiplexer (ROADM) core configured to transmit optical signals of multiple wavelengths to and receive optical signals of multiple wavelengths from another optical node. The ROADM core is also configured to add optical signals thereto and to drop optical signals therefrom. The... Agent: Fitzpatrick Cella Harper & Scinto

20080013953 - Multifunctional and reconfigurable opticalnode and optical network: An optical node includes a reconfigurable optical add drop multiplexer (ROADM) core configured to transmit optical signals of multiple-wavelengths to and receive optical signals of multiple-wavelengths from another optical node via a network interface, and to add optical signals thereto and to drop optical signals therefrom. The node also includes... Agent: Fitzpatrick Cella Harper & Scinto

20080013947 - Method and device for surveillance of optical connection paths for a transparent optical network: An optical connection path surveillance device for a transparent optical network includes analysis means (80, 81) adapted to detect node signatures carried by an optical signal in transit at a point of said network, each node signature including information uniquely associated with a switching node of the network. The analysis... Agent: Sughrue Mion, PLLC

20080013948 - Method and system for managing data service network of metropolitan area network: The present invention discloses a method and system for managing data service network of MAN, as well as a method for searching data service paths based on the MAN system. The solution of the present invention includes binding VCTTPs at each end of at least two VCs as Path Trails... Agent: Mcandrews Held & Malloy, Ltd

20080013951 - Wavelength division multiplexing passive optical network system: Disclosed is a wavelength division multiplexing passive optical network (WDM PON) system in which an optical signal outputted from a central office is injected into a Fabry-Perot laser diode (F-P LD) as the light source of an optical network unit, so that the output wavelength of the optical network unit... Agent: Cantor Colburn, LLP

20080013952 - Method and apparatus for demultiplexing optical signals in a passive optical network: Methods and structures are disclosed demultiplexing optical signals transmitted over an optical fiber into a silicon substrate and to multiple detectors. The silicon substrate has two spaced-apart surfaces and a diffractive element disposed adjacent to one of the surfaces. Each of the optical signals corresponds to one of multiple wavelengths.... Agent: Townsend And Townsend And Crew LLP / Amat

20080013955 - Optical module and optical wavelength multiplexing and demultiplexing device: To provide an optical module with optical elements having a collimator and filter functions arranged on the same substrate, and reducing a complicated alignment and obtaining an excellent optical coupling while securing actually sufficient amount of reflection attenuation. A plurality of wavelength selective filters 71 to 74 with different selective... Agent: Oliff & Berridge, PLC

20080013956 - Provisioning of services via an optical fiber network: An optical fiber network may be provided in a building or set of buildings that can be used with any type of services, regardless of whether those services are provided as electrical signals or as optical signals. To accomplish this, a service aggregation gateway may be provided that receives electrical... Agent: Banner & Witcoff, Ltd.

20080013957 - Service aggregation gateway: An optical fiber network may be provided in a building or set of buildings that can be used with any type of services, regardless of whether those services are provided as electrical signals or as optical signals. To accomplish this, a service aggregation gateway may be provided that receives electrical... Agent: Banner & Witcoff, Ltd.

20080013958 - Information communication system for use in robot: An information communication system for use in a robot communicates a full-color light flux between a transmitting device and a receiving device separated from each other. The transmitting device receives a sensor signal to generate an optical information signal including a color signal based on a sensor identifying information and... Agent: Amin, Turocy & Calvin, LLP

20080013959 - Optical module and production method therefor: An optical transmitter includes a package including a cavity formed at an upper part thereof, a light transparent member disposed on the package, and a flexible substrate including a circuit pattern formed on at least one side thereof and being placed on a back surface of the light transparent member.... Agent: Mcginn Intellectual Property Law Group, PLLC

20080013960 - Apparatus and method for providing information for at least one structure: A spectrally encoded endoscopic probe having high resolution and small diameter comprising at least one flexible optical fiber; an energy source; a grating through which said energy is transmitted such that the energy spectrum is dispersed; a lens for focusing the dispersed energy spectrum onto a sample such that the... Agent: Dorsey & Whitney LLP Intellectual Property Department

20080013961 - Miniature composite assembly that incorporates multiple devices that use different wavelengths of light and method for making the composite assembly: A remote control (RC) receiver device and an ambient light photosensor (ALPS) device are mounted on a single mounting device (e.g., printed circuit board) such that they are part of a single composite assembly. This reduces the amount of space that is needed in electronic devices that incorporate both RC... Agent: Kathy Manke Avago Technologies Limited

20080013963 - Demodulation circuit, ic, and communication device: The demodulation circuit of the present invention is a demodulation circuit, connected with a plurality of light-receiving sections each for receiving an optical signal and converting the signal into a binary pulse signal, operable to select and demodulate a pulse signal out of pulse signals that are supplied from the... Agent: Birch Stewart Kolasch & Birch

20080013964 - Optical reception apparatus: An optical reception apparatus according to the present invention comprises: a branching section that branches an optical signal input thereto into two; first and second delay interferometers arranged on optical paths through which the branched lights are propagated; first and second photoelectric converting sections that receive the output lights from... Agent: Staas & Halsey LLP

20080013962 - Pulse-modulated signal demodulation circuit, and photoreceiver circuit and electric appliance provided therewith: According to the invention, a pulse-modulated signal demodulation circuit has a first integration circuit, a second integration circuit, and a third integration circuit. The first integration circuit generates a first pulse signal containing a pulse having a pulse width corresponding to the number of any consecutive pulses in the pulse-modulated... Agent: Fish & Richardson P.C.

20080008469 - Communication apparatus, communication line diagnosis method, program and recording medium: In a communication apparatus and the like, the line diagnosis using a test signal is conducted with higher precision. A test signal transmitter generates a test signal for a line diagnosis to feed the signal to a test signal multiplexer. The multiplexer multiplexes the test signal with a main signal... Agent: Mcginn Intellectual Property Law Group, PLLC

20080008470 - Transmission device having optical fiberhigh definition digital audio-video data interface: A transmission device having optical fiber high definition digital audio-video data interface (HDMI/DVI/UDI), in which optical fiber is utilized as the physical connection for the logical channels of the transmission device, and is used to carry images, voices and auxiliary data of the logic channels. For the half-duplex transmission mode... Agent: Birch Stewart Kolasch & Birch

20080008472 - Distribution optical elements and compound collecting lenses for broadcast optical interconnect: Methods and apparatus are described for distribution optical elements and compound collector lenses for a broadcast interconnect. An apparatus includes a broadcast optical interconnect including: a plurality of nodes positioned to define a node array, each of the plurality of nodes having at least one optical signal emitter and a... Agent: John Bruckner, P.C.

20080008471 - N-way serial-channel interconnect: Methods and apparatus are described for an n-Way, Serial-Channel interconnect. An apparatus includes a communications network interconnect including an input layer including a plurality of input channels; a multicast channel branching fabric coupled to the input layer; and a modular output layer coupled to the multicast channel branching fabric layer,... Agent: John Bruckner, P.C.

20080008473 - Wdm-pon system with optical wavelength alignment function: A PLC-based wavelength-tunable WDM-PON system with an optical wavelength alignment function, the WDM-PON system comprises: a PLC platform formed on a silicon substrate; a semiconductor chip comprising an active region generating light and a passive region located in front of the active region for vertically coupling the light generated in... Agent: Blakely Sokoloff Taylor & Zafman

20080008474 - Apparatus for managing an optical signal: An apparatus for managing an optical signal includes a system optics card including an add filter, a drop filter, electrical backplane connector, and a mechanical front panel including express input and output ports providing channels to other system optics cards. The card transports information over a first optical transport link... Agent: Fitzpatrick Cella (tellabs)

20080008475 - Apparatus, system and method for a tunable optical filter: A tunable optical filter comprises an optical switch having a single first optical port and a plurality of second optical ports; a plurality of band pass filters, each one of the band pass filters optically coupled to a respective second optical port; and an optical multiplexer having a plurality of... Agent: Moser, Patterson & Sheridan, L. L. P.

20080008476 - Optical transmitting/receiving apparatus and optical transmitting/receiving method: It is to enable control of an optical transceiver through radio communication. The optical transmitting/receiving apparatus comprises: an optical transceiver which transmits and receives an optical signal to/from outside via an optical fiber; a control device for controlling the optical transceiver; and a main signal wiring system and a control... Agent: Young & Thompson

20080008477 - Optical transmission between devices on circuit board: A circuit board includes a substrate having a thickness in a first direction, extending in a plane perpendicular to the first direction, and having at least one of a through hole and a recess, and an optical transmission channel having an end thereof at a perimeter of the one of... Agent: Arent Fox LLP

20080008478 - Transmitting device for optical signals: The invention relates to a transmitting device for optical signals, having an optical transmitting unit and at least one optical assembly for conditioning a light beam emitted by the transmitting unit. Here, the device has means which permit the attenuation of the intensity of the light beam in the region... Agent: Wells St. John P.s.

20080008479 - Method and arrangement for detecting light signals: A method for detecting and evaluating light signals, in which a light signal impinges an optoelectric converter, where it is converted into an electric signal and the electric signal subsequent to the conversion is distributed into several evaluation channels (13.1-13.4), within each evaluation channel (13.1), (i) a signal evaluation is... Agent: Jacobson Holman PLLC