Optical communications inventions 03/09

20090080880 - Apparatus for monitoring failure positions in wavelength division multiplexing-passive optical networks and wavelength division multiplexing-passive optical network systems having the apparatus: Disclosed is an apparatus for monitoring failure positions on fibers in a WDM-PON system and a WDM-PON system having the apparatus.... Agent: Vincent Lester J Blakely Sokoloff Taylor & Zafman

20090080881 - Optical communication method, optical communication device, and optical communication system: The present invention relates to controlling wavelength switching in a plurality of nodes that are provided to increase the distance of signal transmission in inverse MUX transmission in which a high-speed line is divided into a plurality of low-speed lines for transmission. A maximum skew occurring between adjacent nodes is... Agent: Sughrue Mion, PLLC

20090080882 - Method and apparatus for in-band osnr monitoring: An optical signal-to-noise ratio monitor includes a demodulator comprising an input that receives at least a portion of a phase modulated optical signal. The monitor also includes a delay interferometer with a periodic phase control that sweeps a differential delay of one arm of the interferometer through a plurality of... Agent: Rauschenbach Patent Law Group, LLC

20090080883 - Systems and methods for polarization mode dispersion mitigation: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and... Agent: Fulbright & Jaworski L.l.p

20090080884 - Hybrid fiber twisted pair local loop network service architecture: A new architecture capable of utilizing the existing twisted pair interface between customer premises equipment and an associated serving local switching office is used to provide a vast array of new services to customers. Using an intelligent services director (ISD) at the customer services equipment as an interface for the... Agent: At&t Corp.

20090080886 - Extending path computation element protocol to accommodate routing and wavelength assignment in wavelength switched optical networks: A network component comprising at least one processor configured to implement a method comprising transmitting a request to compute a routing assignment, a wavelength assignment, or both for a signal in a wavelength switched optical network, wherein the request comprises a lightpath constraint and wherein the request is transmitted using... Agent: Conley Rose, P.C.

20090080885 - Scheduling method and system for optical burst switched networks: An optical network scheduling device (10) including a plurality of schedulers (16) each corresponding to a respective channel in the optical burst switch network and configured to maintain a transmission schedule for the respective channel; and a controller (12) configured to receive a burst transmission request and to select at... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090080887 - Parallel transmission of data streams in a star-configured network: A data communications network includes N nodes, where N is an integer greater than one, and a star coupler coupled to each of the N nodes. Each node includes a transmitter and a receiver. The star coupler is configured to receive, in parallel, data streams transmitted from a plurality of... Agent: Morgan, Lewis & Bockius, LLP.

20090080888 - Optical line terminating apparatus and optical communication system: An optical access communication apparatus and an optical access communication system for the coexistence of two wideband PON systems without using an expensive optical device or module. A low-speed PON and a high-speed PON have a same upstream wavelength, and an OLT receives optical signals by a same optical receiver... Agent: Stanley P. Fisher Reed Smith LLP

20090080889 - Wdm type passive optical network: In a WDM type PON system, each ONU comprises an optical transmitter capable to transmit optical signals with variable wavelengths, an optical signal receiving filter variable its receiving wavelength, and a control unit. An OLT selects in response to a wavelength allocation request from each ONU, a transmitting wavelength and... Agent: Mcdermott Will & Emery LLP

20090080890 - Optical repeater device and optical transmission system: An optical repeater device of the present invention comprises: a preamble compensating circuit 53, for taking out a normal data signal from burst signals propagating through a communication transmission path, and for adding a preamble signal before and/or after the data signal. Furthermore, the preamble compensating circuit 53 comprises: a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090080893 - Multi-band hybrid soa-raman amplifier for cwdm: A multi-band hybrid amplifier is disclosed for use in optical fiber systems. The amplifier uses Raman laser pumps and semiconductor optical amplifiers in series to produce a relatively level gain across the frequency range of interest. Multiple Raman pumps are multiplexed before coupling into the fiber. The Raman amplified optical... Agent: At&t Corp.

20090080892 - Network apparatus and method for guaranteeing role of optical supervisory channel: A network node and method for guaranteeing the role of an optical supervisory channel (OSC) in an optical transport network (OTN) are provided. In the network node, at least two OSC units are multiplexed, one of the OSC units is set as a main unit, the other OSC unit is... Agent: Lahive & Cockfield, LLP Floor 30, Suite 3000

20090080891 - Passive optical network system and ranging method: In a WDM-PON system wherein a plurality of ONUs transfer signals by sharing wavelengths, one wavelength dedicated to a ranging procedure is set, and the ranging is performed with only the dedicated wavelength, so as to measure reciprocating delay times. At the other wavelengths, transmission signals from a plurality of... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20090080894 - Chromatic dispersion compensating apparatus: In order to compensate for chromatic dispersion ad dispersion slope over an entire wavelength band of the optical signal, the wavelength band is split into a plurality of bands, and chromatic dispersion compensation is made to make chromatic dispersion in a central wavelength of each of the bands zero.... Agent: Staas & Halsey LLP

20090080895 - Time multiplexed space switch: The present invention provides an optical time multiplexed space switch including a pulsed laser source, and means for producing from the laser source a plurality of wavelengths of pulsed radiation including means for providing permutable multi-wavelength pulse sequences from said multi-wavelength source and means for translating the input data pulses... Agent: Kolisch Hartwell, P.C.

20090080896 - Commissioning tool, commissioning system and method of commissioning a number of wireless nodes: A commissioning tool includes a laser pointer structured to reflect light from a wireless lighting ballast, a directive antenna, a ranging module structured to determine distance to the ballast, and a housing. The pointer, antenna and ranging module are each mounted in the same common orientation with respect to the... Agent: Martin J. Moran

20090080897 - Bi-directional optical module communicating with single fiber: A bi-directional optical module with an improved arrangement of the PD and the LD is disclosed. The LD is mounted on the stem through the LD carrier and the metal block, while the PD is mounted on the stem through the PD carrier. The bottom level of the PD is... Agent: Venable LLP

20090080899 - Fiber optic gps link: A fiber optic GPS signal device and method comprising a VCSEL multimode transmitter having a gain that, together with the GPS antenna gain, is greater than the VCSEL multimode transmitter noise. When in operative communication, via a long length of multimode fiber, i.e., up to 2000 feet and greater, with... Agent: Altera Law Group, LLC

20090080898 - Method and apparatus for reducing noise in a fiber-optic sensor: An optical detection system includes an optical transmit-receive system, an optical conduit in optical communication with the optical transmit-receive system, and an optical sensor in optical communication with the optical conduit. The optical transmit-receive system provides pulsed optical signals to the optical sensor by way of the optical conduit that... Agent: Ganz Law, P.C.

20090080900 - Environmentally stable component assembly: Component assemblies and methods of making component assemblies are disclosed. An exemplary component assembly may generally include a capsule defining a cavity for receiving a component. The component assembly may additionally include at least one lead extending from the component and through the capsule to allow communication between the component... Agent: Verizon Patent Management Group

20090080901 - Dispersion compensating apparatus and dispersion compensating method: In a dispersion compensating apparatus, a reference identifying unit identifies a reference (X dB down) that makes a penalty lower than a predetermined value in accordance with optical signal information and a reference identifying table, and a VIPA plate temperature adjusting unit adjusts a refractive index of a VIPA plate... Agent: Staas & Halsey LLP

20090080902 - Dispersion compensation controlling apparatus and method for searching for amount of dispersion control: In order to enhance dispersion control, the apparatus includes a dispersion controller; a quality index generator generating a quality index representing a quality of an optical signal output from the dispersion controller; and a searching unit searching for an amount of dispersion control applying to the dispersion controller which amount... Agent: Staas & Halsey LLP

20090080903 - Optical transmitter with precisely controlled laser diode and a method to control a temperature of a laser diode: The present invention discloses an optical transmitter that enables to precisely control the temperature of the LD and to keep the emission wavelength constant. The controller installed within the transmitter includes a control signal generator, a differential amplifier and a current driver. The signal generator generates a control signal based... Agent: Smith, Gambrell & Russell

20090080904 - Optical transmitting apparatus and setting-value determining method: A wavelength-variable light source generates light having a wavelength according to an input wavelength control current. An EA modulator modulates light generated by the wavelength-variable light source, based on a modulation characteristic corresponding to an input EA bias. A TEC changes the temperature of the wavelength-variable light source and that... Agent: Staas & Halsey LLP

20090080905 - High power, low distortion directly modulated laser transmitter: An optical transmitter is disclosed wherein a directly modulated laser outputs a frequency modulated signal through a semiconductor optical amplifier. Both the optical transmitter and semiconductor amplifier are modulated according to an output of a digital data source. An optical filter is positioned to receive an output of the semiconductor... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090080906 - Frequency offset monitoring device and optical coherent receiver: The present invention provides a frequency offset monitoring device and an optical coherent receiver. A low speed frequency offset monitoring device comprises a signal speed lowering section, for lowering the speed of an inputted signal and outputting the speed lowered signal, and a frequency offset monitor, for monitoring frequency offset... Agent: Staas & Halsey LLP

20090074403 - Self-healing ring-based passive optical network: A self-healing ring-based passive optical network (PON) including an optical fiber ring, an optical line termination (OLT), and a plurality of optical network units (ONUs) is provided. The optical fiber ring has a first end and a second end. The OLT is coupled to the first and the second end.... Agent: Jianq Chyun Intellectual Property Office

20090074404 - System, device and method for managing alternate site switching in an optical communication system: A system, device, and method for managing alternate site switching in an optical communication system recovers from failures/degradations that are uncorrected by the core optical communication network. When an uncorrected failure/degradation is detected, communications for a protected end-system are switched from a primary end-system to a backup end-system. The backup... Agent: Anderson Gorecki & Manaras LLP

20090074405 - Optical transceiver tester: In embodiments of the present invention, an optical device tester performs stressed eye testing on several optical receivers and transmission and dispersion penalty testing on optical transmitters at a variety of data rates wavelengths using single mode optical signals and multimode optical signals using a variety of supply voltages and... Agent: Intel/bstz Blakely Sokoloff Taylor & Zafman LLP

20090074406 - Method for alerting users to conditions affecting network service: A method to alert users to network service conditions. The method includes detecting a network service condition, detecting an attempt to access at least one communication service of the network, and issuing an alert. A network for practicing the method includes at least one communication terminal and a network element... Agent: Fitzpatrick Cella Harper & Scinto

20090074407 - High-speed serializer, related components, systems and methods: A communication system includes a multiplexer configured to multiplex a first set of data channels into a first data channel and to multiplex a second set of data channels into a second data channel, and a delay adjuster configured to adjustably delay the first data channel based on a delay... Agent: Mcdermott Will & Emery LLP

20090074408 - Fibre channel arbitrated loop bufferless switch circuitry to increase bandwidth without significant increase in cost: A switch, switched architecture and process for transferring data through an FCAL switch is disclosed. The switch uses multiple switch control circuits each coupled to one FCAL network and all connected to a crossbar switch. The switch control circuits are coupled together by a protocol bus for coordination purposes. Local... Agent: Squire, Sanders & Dempsey L.L.P.

20090074409 - High-capacity packet-switched network: A packet-switched WDMA ring network has an architecture utilizing packet stacking and unstacking for enabling nodes to access the entire link capacity by transmitting and receiving packets on available wavelengths. Packets are added and dropped from the ring by optical switches. A flexible credit-based MAC protocol along with an admission... Agent: Mr. S. H. Dworetsk Y At&t Corp.

20090074410 - Method and apparatus for synchronous cross-connect switching in optical transport network: A method for synchronous cross-connect switching in optical transport network, the method includes: receiving optical channel transport unit (OTU) signals; mapping the OTU signals into interim switching units, wherein the interim switching units match bit rates of the received OTU signals; performing a synchronous cross-connect switching for the interim switching... Agent: Brinks Hofer Gilson & Lione

20090074411 - System, methods, apparatuses, and program code for capturing, storing, and retrieving information communicated in a network: A method, apparatus, system, and computer-readable program, for for capturing communicated information across a network that includes a plurality of nodes. The method includes providing criteria for capturing, in at least a first one of the nodes, information included in at least one communication passing through the at least one... Agent: Fitzpatrick Cella (tellabs)

20090074412 - Method, system, and computer program product for simulating an uplink through a network element: A method, system and computer program for simulating a communication link, such as an uplink, to one or more external networks in a communication network is provided. A test optical network terminal is connected to the network, and an uplink is simulated through the test optical network terminal, providing access... Agent: Fitzpatrick Cella Harper & Scinto

20090074413 - System and method for providing transparent lan services: A system and method provide transparent LAN services in a metro-WAN environment to extend enterprise LANs over metro and wide area networks. The transparent LAN services generally provide customers with a layer two Ethernet connectivity with MAC learning capabilities.... Agent: Sawyer Law Group LLP

20090074414 - Port-to-port, non-blocking, scalable optical router architecture and method for routing optical traffic: One embodiment of the present invention includes a router comprising an ingress edge unit with one or more ports and an egress edge unit with one or more ports connected by a switch fabric. The ingress edge unit can receive optical data and convert the optical data into a plurality... Agent: Connolly Bove Lodge & Hutz LLP

20090074416 - Communication systems: A transmitter transmits signals on multiple channels, and they are wavelength multiplexed according to Coherent WDM. Quality of the received signals is very much enhanced by the transmitter tuning the relative phases of neighbouring channels according to delay characteristics of the optical path. In one example, the transmitter adds a... Agent: Jacobson Holman PLLC

20090074415 - Pmd insensitive direct-detection optical ofdm systems using self-polarization diversity: A self-polarization diversity technique to combat PMD in a direct-detection optical OFDM system. This technique does not require any dynamic polarization control, and can simultaneous compensate PMD in a WDM system with one device. Simulation results show that this technique virtually completely eliminates the PMD impairments in direct-detection optical OFDM... Agent: Brosemer, Kolefas & Associates, LLC - (lucent)

20090074417 - Method and system for compensating for optical dispersion in an optical signal: A method is provided for dispersion compensation of an optical signal communicated in an optical network comprising a plurality of spans of low chromatic dispersion fiber. The method includes receiving an optical signal comprising a plurality of channels, where the information communicated in a first set of one or more... Agent: Baker Botts L.L.P.

20090074418 - Self checking optical add drop multiplexer: A technique is proposed for performing add/drop operations in an OADM assembly serving an optical network and comprising an add unit and a drop unit. With respect to at least one optical channel assigned to an optical wavelength λ, the OADM assembly is capable of dropping the channel from the... Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw

20090074419 - High power, optically-linearized microwave fiber optic link with suppression of fiber induced distortion: Techniques and system implementations for fiber optic transmission systems for suppressing fiber induced distortions and modulation-induced distortions as well as increasing the link power and RF gain.... Agent: Edell, Shapiro & Finnan, LLC

20090074420 - Measuring apparatus, transfer circuit, and measuring method: There is provided a measuring apparatus that measures a characteristic of a transfer circuit transmitting a signal. The transfer circuit includes an electrical signal sending section that transmits a sending signal, a current to light converting section that converts the sending signal into an optical signal, an optical signal transmitting... Agent: Osha Liang L.L.P.

20090074421 - High-dynamic-range analog fiber-optic link using phase modulation and tunable optical filter: A cw-laser source transmits low-noise, narrow-linewidth optical power via an optical fiber to a bias-free electro-optic phase modulator at a remote site, where an antenna or an RF sensor is located. The RF electrical signal modulates the phase modulator at the remote site, converting an electrical signal into an optical... Agent: James C. Wray

20090074422 - Methods and apparatus for target identification: Methods and apparatus for target identification are disclosed. An example method for target identification disclosed herein comprises establishing an optical communication link with a potential target, transmitting a first signal encoded with a first code to the potential target using the optical communication link, receiving a second signal from the... Agent: At&t Legal Department - Attn. Patent Docketing

20090074423 - Method and apparatus for configuring an optical network terminal: Separating Passive Optical Network (PON) functions in different mechanical devices, such as optical to electrical conversion of the PON protocol, allows installation of an optical termination device at an exterior of an installation premises and installation of a user interface device performing PON functions inside the installation premises. Various embodiments... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20090074424 - Device, system and method of transferring information over a communication network including optical media: Embodiments of the invention provide methods, devices and systems of transferring information upstream from two or more sets of user devices in a cable communication network. The system, according to some demonstrative embodiments of the invention, may include two or more optical transmitters to transmit two or more respective light... Agent: Pearl Cohen Zedek Latzer, LLP

20090074425 - Optical transmitter and control method thereof: An optical transmitter which modulates the phases and intensities of double pulses and then transmits them, includes a branching section which branches each of the input double pulses to first and second paths, a first optical modulator placed in the first path, second and third optical modulators placed in series... Agent: Dickstein Shapiro LLP

20090074426 - Monolithic dqpsk receiver: A monolithic, Indium Phosphide (InP) differential phase-shift keying (DPSK) or differential quadrature phase shift keying (DQPSK) receiver that exhibits low polarization sensitivity.... Agent: Brosemer, Kolefas & Associates, LLC - (lucent)

20090074427 - Reconstruction and restoration of two polarization components of an optical signal field: Digital compensation of the polarization-mode dispersion (PMD) effects experienced by an optical signal in a transmission link is achieved. A digital representation of the optical fields of two orthogonal polarization components of an optical signal, defined by a polarization beam splitter (PBS), is first obtained. The fiber transmission link is... Agent: Docket Administrator - Room 2f-192 Alcatel-lucent Usa Inc.

20090074428 - Reconstruction and restoration of two polarization components of an optical signal field: A digital version of both amplitude and phase of at least one generic polarization component of a received optical signal is developed using dual-polarization direct differential detection with digital signal processing. The received signal is split into orthogonal polarization components, each of which is split into three copies. For each... Agent: Docket Administrator - Room 2f-192 Alcatel-lucent Usa Inc.

20090067832 - Method and apparatus for verifying signaling values in an optical distribution network: An apparatus and a method for verifying optical system performance using a signaling value test are disclosed. After instructing the first optical interface device and the second optical interface device to enter a verification mode, the first optical interface device sends first verification data to the second optical interface device... Agent: James M. Wu Jw Law Group

20090067833 - Method and arrangement for transmitting an optical ofdm-signal: From an real valued OFDM signal (S0(t)) is a baseband signal (SB(t)) derived and converted into a complex single sideband modulation signal (n(t)). This is modulated onto an optical carrier (fOC) to generate a SSB transmission signal (SOT) having a small bandwidth an carrying the information in the envelope or... Agent: Bell, Boyd & Lloyd, LLP

20090067834 - Gmpls fast re-route for oadm and aux 10mbps support: Embodiments of the present invention provide a GMPLS fast re-route of packets within a network using a multicast address and a table comprising a list of alias IP addresses. According to various embodiments of the invention an alternate data path from a source node to a destination node allows a... Agent: Infinera Corporation

20090067835 - Method and apparatus for protection switching in passive optical network: Systems and methods for performing protection switching in a passive optical network are provided. When a fiber cut is detected, control and management plane applications are not immediately informed. A rapid re-registration procedure is instigated upon detection of a fiber cut event. This allows multiple optical network units to re-register... Agent: Ralph A. Dowell Of Dowell & Dowell P.C.

20090067836 - Method, apparatus, system, and computer program to validate network element interfaces for functional testing: A method, apparatus, computer program, and system for validating network element interfaces for functional testing. The method is comprised of coupling together at least two main interfaces of a plurality of main interfaces of at least one network element and providing a signal to one of the main interfaces via... Agent: Fitzpatrick Cella (tellabs)

20090067837 - Means and apparatus for a scaleable congestion free switching system with intelligent control iii: A switching system for routing information packets that can simultaneously receive a variety of packet formats. The packet formats include electronic packet transmissions, optical wave division multiplexed data (WDM) with a single frame consisting of a plurality of packets to be sent to a common output line, with each packet... Agent: Keith D. Nowak

20090067838 - High performance gigabit passive optical network: A device determines a bandwidth demand for traffic provided between a line terminal (LT) and multiple optical network terminals (ONTs), and dynamically tunes, based on the determined bandwidth demand, one or more tunable filters provided in the LT and the multiple ONTs to one of balance the traffic, protect the... Agent: Verizon Patent Management Group

20090067839 - Storage area network extension over passive optical networks using parallel signal detection: A storage area network extension, network and method include a storage terminal coupled to a remote node. The remote node is connected to a passive optical network (PON) for transferring data signals in the PON and storage signals to/from the storage terminal by employing subcarrier channels in the PON to... Agent: Nec Laboratories America, Inc.

20090067840 - Method of providing multi-staged ip filters in a point-to-multipoint environment: Various service providers have different architectures to deliver Internet Protocol Television (IPTV) to their subscribers. Some service providers equipment is based on layer 2 IPTV protocol, and other equipment is based on layer 3 IPTV protocol. Within a Passive Optical Network (PON) environment, there may be multiple service providers that... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20090067841 - 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: Mr. S. H. Dworetsky At&t Corp.

20090067842 - Optical pulse regeneration based on pulse temporal shaping: An optical pulse regeneration unit comprising means for broadening the temporal width and flattening the center portion of an optical pulse and slicing means for slicing the pulse at a point in time so that in use, the pulse immediately after the slicing means contains only the portions of the... Agent: Darby & Darby P.C.

20090067843 - Optical wavelength-division-multiplexed (wdm) comb generator using a single laser: Apparatus, systems and techniques that use a single laser to generate desired optical WDM comb frequencies.... Agent: Fish & Richardson, PC

20090067844 - Telecommunications transport methods and systems for extended reach low differential latency: Systems and methods for extended reach low differential latency optical networking with optical amplifiers and dispersion compensation modules configured to minimize latency between transmit and receive paths are provided. Additionally, systems and methods are provided for incorporating absolute time references wherein the relative accuracy of clock time between various servers... Agent: Clements Bernard Miller

20090067845 - Signal distribution module for a directionless reconfigurable optical add/drop multiplexer: The present invention provides a signal distribution module for use in a directionless reconfigurable optical add/drop multiplexer application, including: a multi-cast switch having a plurality of input ports and a plurality of output ports; a plurality of optical amplifiers coupled to the plurality of input ports of the multi-cast switch,... Agent: Clements Bernard Miller

20090067847 - Remote control system: While a remote control system is equipped with the remote controller and an infrared communication apparatus 33, a pattern for reflecting diffraction light by illumination light is provided with the remote controller, whereas a transmitting/receiving unit 37 and a control unit 39 are provided with the infrared communication apparatus 33.... Agent: Drinker Biddle & Reath (dc)

20090067846 - System and method for pre-configuring and authenticating data communication links: An electronic device includes a data processor and data communication mechanism for: (a) transmitting, via an optical link, configuration and authentication requests/information for a second data communication link to an external device; and (b) transmitting other content data via the separate, second data communication link that is configured using the... Agent: Dillon & Yudell, LLP

20090067848 - Limited life transceiver: Systems and methods for an optical transceiver module to limit the amount of time the optical transceiver module is allowed to operate. 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 processor,... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090067849 - Intelligent pluggable optical transceiver: The present invention is to provide an intelligent pluggable transceiver improving an EMI tolerance with a simple mechanism. The optical transceiver of the invention comprises upper and lower housings (11, 12), a holder (81), optical assemblies (51, 61), a cover (14), a substrate (15) and a grip (13). The optical... Agent: Smith, Gambrell & Russell

20090067850 - Communication system and its device: A transmission device uses transmission delay time of reciprocation with the terminal and time information of the transmission device to create a correction value of time information of the terminal and transmits it to the terminal. The terminal includes expected arrival time information based on the time information of the... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090067851 - Multi-chip systems with optical bypass: Embodiments of a system that includes an array of single-chip modules (CMs) are described. This array includes a first CM, a second CM coupled to the first CM, and a third CM coupled to the second CM. A given CM, which can be the first CM, the second CM or... Agent: Pvf -- Sun Microsystems Inc. C/o Park, Vaughan & Fleming LLP

20090067852 - Optical modulator and optical transmitter: A reduction in size and cost of an optical modulator is achieved with a simple configuration, while improving the modulation characteristics. An optical modulator modulates light branched by an optical coupler and then couples the light via the optical coupler. The optical coupler is formed in a substrate having electro-optic... Agent: Staas & Halsey LLP

20090067853 - Device for transmitting and receiving dvi video over a single fiber optic interconnect: A transmitting device includes a housing, a multichannel transmitter optical subassembly, a microcontroller, and a DVI connector. The housing has only one optical port, where the only one optical port is adapted to receive only one optical fiber. The multichannel transmitter optical subassembly is mechanically associated with the housing. The... Agent: Karl D. Kovach Esq. Emerson Networks Power Connectivity Solutions, Inc

20090067854 - Optical space communication reception circuit, optical space communication device, optical space communication system, and electronic device: An optical space communication reception circuit receives a signal in switched-over communication speed modes and under settings corresponding to the communication speed modes. Receiver sensitivity in the respective communication speed modes is set in advance such that maximum communicable distances in the communication speed modes are substantially equal. By this,... Agent: Birch Stewart Kolasch & Birch

20090060494 - Light emitter controlling: Embodiments related to light emitter control are described and depicted.... Agent: Infineon Technologies Ag Patent Department

20090060495 - Initiating diagnostics from any user communication terminal: A method for initiating diagnostic operations for a communication network, and devices, a network, and computer-readable storage medium storing control logic, that operate in accordance with the method. A test set device is communicatively coupled to a test head. The test set device provides access information to the test head,... Agent: Fitzpatrick Cella Harper & Scinto

20090060496 - Method and system for enabling diagnosing of faults in a passive optical network: In a passive optical network (PON), multiple optical network terminals (ONTS) transmit data to an optical line terminal (OLT) using a common optical wavelength and fiber optical media. Various components of the PON, including the OLT and ONT(s), can malfunction. Centralized techniques for maintaining or diagnosing fault conditions may be... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20090060497 - Feedback controlled locking of optical channel signals in optical receivers in wavelength division multiplexed (wdm) communication systems: Techniques, apparatus and systems for optical communications that use feedback controlled locking of optical channel signals in optical receivers in WDM communication systems, including ultra dense WDM systems.... Agent: Fish & Richardson, PC

20090060498 - Method and apparatus for determining fiber characteristics in an optical communication network: An apparatus and method for deriving fiber characteristics between two nodes in an optical communication network are disclosed. A roundtrip time for a signal to travel between two nodes is measured by sending the signal via the optical supervisory channel from a first node to a second node, which is... Agent: Patterson & Sheridan, LLP/ Lucent Technologies, Inc

20090060499 - Apparatus and method for monitoring quality of optical signal: An apparatus and method for monitoring quality of an optical signal in an optical network based on wavelength division multiplexing optical transmission technology are provided, which are capable of monitoring the quality of an optical signal with higher accuracy. The apparatus includes: a signal extractor extracting an optical signal having... Agent: Lahive & Cockfield, LLP Floor 30, Suite 3000

20090060500 - Data processing system and storage device: A storage device includes a memory that stores data, a memory controller that controls reading and writing of data from and to the memory, and a host controller. The host controller transmits and receives the data to and from a host via a transmission line. The host controller transmits and... Agent: Fildes & Outland, P.C.

20090060501 - All optical batcher banyan switch, batcher switch, banyan switch and contention manager: An all-optical contention manager includes at least two inputs and at least two outputs. The outputs are configured to output signals to a Banyan switch. The contention manager detects and resolves routing contentions between incoming optical signals prior to outputting the signals to the Banyan switch. The signals have tags... Agent: Coats & Bennett, PLLC

20090060502 - Service handover method, optical network system, handover equipment and pe equipment in an ovpn: An optical network system disclosed in an embodiment of the present invention contains a PE and a handover equipment located between the PE and a CE. The PE is adapted to provide optical network access for the CE. The handover equipment is adapted to disconnect a CE that finishes working... Agent: Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd)

20090060504 - Apparatus and method for protection switching of optical channel: An apparatus and method for protection switching of an optical channel at each node in an optical network based on wavelength division multiplexing optical transmission technology are provided. The method can be applied to any node having at least two optical fiber inputs and outputs. The apparatus includes: a splitter... Agent: Lahive & Cockfield, LLP Floor 30, Suite 3000

20090060505 - Distributing wavelength compatible with signaling protocols: An apparatus, comprising a first node configured to communicate with a second node to generate a wavelength assignment, wherein the first node is configured to send a wavelength availability information to the second node. Included is a network component comprising at least one processor configured to implement a method, comprising... Agent: Conley Rose, P.C.

20090060503 - Storage over optical/wireless integrated broadband access network (soba) architecture: An optical line terminal (OLT), network and method include input and output switching modules configured to switch between input and output channels. A transmission module is configured for physical layer transmission using at least one of a plurality of transmission technologies to provide multiple uses of an existing transmission line.... Agent: Nec Laboratories America, Inc.

20090060506 - Optical packet switching apparatus and method therefor: An optical switch section that switches the path of an optical packet transmitted thereto and outputs the optical packet, and a control section that generates multiple switch control signals in accordance with the destination of an optical packet transmitted thereto, transmits the multiple control signals to the optical switch section... Agent: Katten Muchin Rosenman LLP

20090060507 - Backward compatible pon coexistence: A network comprising a first optical line terminal (OLT), and a second OLT in communication with the first OLT, at least one first-type optical network unit (ONU), and at least one second-type ONU. Included is an OLT configured to implement a method comprising forwarding a first downstream data from a... Agent: Conley Rose, P.C.

20090060508 - Polarization multiplexing and transmitting apparatus: A polarization multiplexing and transmitting apparatus generates polarization multiplexed light by multiplexing modulated signal components that having varying intensities and are in polarization states orthogonal to each other. The polarization multiplexing and transmitting apparatus includes a converting unit that converts light generated by a light source into signal components having... Agent: Staas & Halsey LLP

20090060509 - Customer premises optical network unit and optical transmission system: A customer premises optical network unit (ONU) comprises: an electrical/optical transform unit 6 to be connected with an optical transmission path 2 at a central office side for performing an opto-electrical transform and an inverse opto-electrical transform; an ONU function part 7 to be connected with an electric signal input... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090060510 - Optical network terminal apparatus: A distributed optical network terminal apparatus includes an n-plexer selecting a plurality of downstream channels of a received wavelength division multiplexed (WDM) optical signal. A wavelength translator block translates each selected channel of the WDM optical signal to an associated downstream translated optical signal having a wavelength distinct from that... Agent: Davis & Associates

20090060511 - Coherent optical receiver: A coherent optical receiver includes a 90-degree optical hybrid circuit to which a received signal light is input, I-channel and Q-channel photo detectors to which the outputs of the hybrid circuit are input, a clock extraction circuit which reproduces a clock whose speed is the same as a demodulated signal... Agent: Mcglew & Tuttle, PC

20090060512 - Distributed wavelength conversion control for signaling protocols: A network component comprising at least one processor configured to implement a method comprising obtaining a wavelength availability information for a path, determining whether to implement a wavelength assignment based on the wavelength availability information, updating the wavelength availability information when the wavelength assignment is to be implemented, and forwarding... Agent: Conley Rose, P.C.

20090060514 - Infra-red repeater in power centers: A combined electrical power conditioner and IR controller that provides a single point for communications with a Remote and connects with the various components of a video or audio system which is configured to respond to IR signals. The apparatus receives and routes IR signals either serially or in parallel... Agent: Lariviere, Grubman & Payne, LLP

20090060515 - Remote controlling system, electronic device, and controlling method: A remote controlling system is disclosed. An infrared remote controller generates a first serial signal containing a command corresponding to a user's operation and outputs the first serial signal by infrared communication. A radio remote controller generates a code signal containing a key number corresponding to a user's operation and... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20090060513 - Remote optical control of electrical circuits: An optical controlling circuit and an electrical controlled circuit such as a motor control circuit are interconnected by an electro-optic interface. A passive optical switch located in the optical circuit at a position remote from the electrical circuit is physically actuated to generate a change in optical transmission state of... Agent: George Dinca

20090060516 - Signal forwarding system and signal receiver thereof: A signal forwarding system and a signal receiver thereof are disclosed. The signal forwarding algorithm is provided so that the photo signal provided by the remote control device can be used to indirectly control the remote application apparatus. The present invention uses the photo transistor to be a photo-detecting element... Agent: Rosenberg, Klein & Lee

20090060517 - Method of and system for positioning first and second devices relative to each other: The invention relates to a method of locating a first device for wirelessly communicating with a second device relative to each other. The invention further relates to a system comprising a first device and a second device adapted for wirelessly communicating with each other. The object of the present invention... Agent: Buchanan, Ingersoll & Rooney PC

20090060518 - Methods and apparatuses for providing a hermetic sealing system for an optical transceiver module: In an optical transceiver module, the bottom surface of the lid is temporarily attached to the top surface of the submount assembly in a pre-alignment position prior to performing the solder flowing process in order to prevent the lid from shifting position during the solder flowing process. The solder flowing... Agent: Kathy Manke Avago Technologies Limited

20090060519 - Internal emi washer for optical transceiver with parallel optic fiber ribbon: An optical transceiver including an optical fiber ribbon, a housing permanently attached to the optical fiber ribbon, and an electrical connector extending from the housing. An electro/optical converter is disposed within the housing including an array of VCSELs and an array of photodiodes rigidly coupled to a ferrule supporting respective... Agent: Emcore Corporation

20090060521 - Method, system and device for data transfer in an optical network: A method for data transfer in an optical network, including: amplitude modulating, by a central office, an optical carrier by a downstream data with a first rate to generate a downstream optical signal carrying the downstream data; sending the downstream optical signal to a user terminal; obtaining, by the user... Agent: Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd)

20090060520 - Redundancy and interoperability in multi-channel optoelectronic devices: A multi-channel optoelectronic device is configured to establish a redundant status link with a remote device. The optoelectronic device can transmit N transmit optical signals to the remote device over a plurality of transmit channels and receive N receive optical signals from the remote device over a plurality of receive... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090060522 - Parallel high-speed communication links with redundant channel architectures: An optical transmission system includes more optical channels than electrical channels. If an optical channel is not functioning, the signals may be diverted to another optical channel since there are more optical channels than electrical channels. Embodiments of the present invention also relate to switches for switching the electrical channels... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090060523 - In-service optical dispersion determining system and method: A system and method for in-service optical dispersion determination are provided. Optical dispersion is determined by splitting a first optical signal into two components, introducing a time delay between the two components such that corresponding pulses of the two components partially overlap, combining the two components to generate a combined... Agent: Smart & Biggar P.o. Box 2999, Station D

20090060524 - High frequency signal optical transmission system and high frequency signal optical transmission method: A filter conducts the round trip by using the return optical signal that has been shifted in frequency, and measures the transmission optical signal and the return signal in phase by the principle of the Michelson interferometer at the same time, independently, and splits the two optical signals. A polarization... Agent: Birch Stewart Kolasch & Birch

20090060525 - All-optical polarization-independent clock recovery: Simultaneous recovery of several different clock signals is based on coupling an optical input signal into an optical resonator matched with at least four spectral peaks of the input signal. The input signal having arbitrary polarization is divided by a polarizing splitter into a first signal having horizontal polarization and... Agent: Venable LLP

20090060526 - Optical fm source based on intra-cavity phase and amplitude modulation in lasers: An optical transmitter is discloses having a gain section and a phase section. The phase section is modulated to generate a frequency modulated signal encoding data. The frequency modulated signal is transmitted through an optical spectrum reshaper operable to convert it into a frequency and amplitude modulated signal. In some... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090060528 - Optical transmitter: A technology to automatically control the biasing of an optical duobinary transmitter using a single-drive LN-MZ modulator is provided. A low-frequency signal is amplitude modulated onto a voltage signal input into a Mach-Zehnder optical modulator 22. The optical output from the optical modulator 22 is detected by an optical detection... Agent: Mcdermott Will & Emery LLP

20090060527 - Silicon integrated photonic optical parametric amplifier oscillator and wavelength converter: The present invention is directed towards systems and methods for adjusting intensity, wavelength and higher and lower frequency components of an optical signal. Photonic apparatus receives a first and a second optical signal. A waveguide provides an anomalous group velocity dispersion the first optical signal or the second optical signal... Agent: Choate, Hall & Stewart LLP

20090060529 - Optical bench fiber optic transmitter: The subassembly includes a laser for emitting signals towards fibers to be monitored, a passive alignment carrier, a photodetector for monitoring reflected laser signals from the fibers and for monitoring laser output power, and an optical fiber. The laser is disposed within the passive alignment carrier. The optical fiber is... Agent: Naval Air Warfare Center Aircraft Division Office Of Counsel Bldg 435

20090060530 - Optical network interface devices and methods: A system comprises an optical network terminal (ONT) that provides an interface to a passive optical network (PON). The ONT is coupled to a subscriber gateway device via at least one cable. The ONT may be located outside a subscriber premises while the subscriber gateway device may be located within... Agent: Shumaker & Sieffert, P. A.

20090060531 - Optical network interface devices and methods: A system comprises an optical network terminal (ONT) that terminates an optical fiber link of an optical network to provide an optical network interface. The ONT may include an optical module that receives optical signals via the optical fiber link and converts the optical signals to electrical signals and an... Agent: Shumaker & Sieffert, P. A.