Optical communications inventions 02/09

20090052889 - Optical network terminal backup battery centralized monitoring and voltage alert: An optical network terminal (ONT) battery backup unit (BBU) battery voltage alert system (BVAS). This alert is provided as a supplement to an audio alarm which sounds when the backup battery is discharging because that alarm may not be heard in sufficient time if the alarm is remotely located relative... Agent: Verizon Patent Management Group

20090052890 - Method and apparatus for detecting and removing orphaned primitives in a fibre channel network: A method and system for detecting orphaned CLS primitives in a fibre channel network having a fibre channel switch element coupled to an arbitrated loop is provided. The method includes, sending an OPN primitive to a switch element pore's own AL_PA to open a connection with itself; and determining if... Agent: Klein, O'neill & Singh, LLP

20090052891 - Method and apparatus for reducing error rate during data transmission in an optical communications network: An apparatus and a method of enhancing data integrity for data transmission over an optical network are disclosed. Upon detecting a low performance condition associated to the optical communications network, an error correcting code (“ECC”) device is activated. The ECC device inserts the ECC to a data stream to form... Agent: James M. Wu Jw Law Group

20090052892 - Communication network with co-routed multi-channel traffic: Embodiments of the present invention route a wavelength division multiplexed signal across multiple communication paths using skew characteristics of at least some of the communication paths. The network is a wavelength division multiplexed optical transport network. The plurality of communication paths involves different signal and path attributes such as a... Agent: Infinera Corporation

20090052893 - Optical transmission system: An optical transmission system comprises a metropolitan core network operated in a wavelength division multiplexing mode and connected via metro connection devices to access connections to optical network terminals connected by means of a passive optical splitter. The metro connection devices contain regenerators and wavelength converters, so that data regeneration... Agent: Bell, Boyd & Lloyd, LLP

20090052894 - Pon system and terminal operation registering method: In a PON system in which communication is performed at a plurality of types of transmission rate (L, M, and H) in an upstream direction from a plurality of terminals connected to a station apparatus through optical fibers, within a discovery period for allowing an unregistered terminal to be recognized... Agent: Mcdermott Will & Emery LLP

20090052895 - Optical node device, network control device, maintenance-staff device, optical network, and 3r relay implementation node decision method: An economical optical network is constituted by effectively using network resources by using the minimum number of, or minimum capacity of 3R repeaters. 3R section information corresponding to topology information on the optical network to which an optical node device itself belongs is stored, and the 3R section information stored... Agent: Harness, Dickey & Pierce, P.L.C

20090052896 - Passive optical network system and ranging system thereof: A station-side communication device connected to subscriber-side communication devices via an optical combining device; sending, to the subscriber-side communication devices, a distance measurement request signal; computing transmission delay times of optical signals from the individual subscriber-side communication devices by receiving distance measurement signals, and including: a threshold control part identifying... Agent: Mcdermott Will & Emery LLP

20090052897 - Passive optical network system and ranging system thereof: A station-side communication device connected to subscriber-side communication devices via an optical combining device; sending, to the subscriber-side communication devices, a distance measurement request signal; computing transmission delay times of optical signals from the individual subscriber-side communication devices by receiving distance measurement signals, and including: a threshold control part identifying... Agent: Mcdermott Will & Emery LLP

20090052898 - Optical transceiver with a plurality of optical subassemblies electrically connected by integrated fpc board with a substrate: The present invention provides an optical transceiver with a function of the wavelength division multiplexing. The transceiver includes a receiver optical unit, a transmitter optical units and a substrate. Both optical unit includes a plurality of receiver optical subassemblies (ROSAs) or a plurality of transmitter optical subassemblies (TOSAs) and a... Agent: Venable LLP

20090052899 - Method and apparatus for controlled device selection by a portable electronic device: The present application discloses a method and apparatus for controlled device selection by a portable electronic device (110). The method may include transmitting, from the portable electronic device, a first wireless signal (140) requesting information corresponding to remote controlled devices (132, 134, 136, 138), sending an optical signal (150) over... Agent: Prass LLP

20090052900 - Multi-function remote controller and method of controlling the same: A multi-function remote controller includes a transmitter to transmit a wireless control signal corresponding to one selected from among a first mode via an infrared diode, in which a user manipulates the remote controller with one hand to manipulate a television, and a second mode, in which the user manipulates... Agent: Stanzione & Kim, LLP

20090052901 - Hybrid fiber coax (hfc) circuit: A hybrid fiber coax (HFC) circuit comprises a diplexer and laser. The diplexer has an input terminal receiving a downstream radio-frequency (RF) signal from a passive optical network (PON). The diplexer outputs this signal from its common terminal onto a cable distribution network (CDN) covering the “last mile” to the... Agent: Alston & Bird LLP

20090052902 - Communication system, communication apparatus and method, and computer program: A communication system (1) is provided with: a first communication apparatus (100a); and a second communicating apparatus (100b), the first communicating apparatus is provided with: (i) a displaying device (110) which can perform high-speed modulation; (ii) a display dividing device (112) for dividing a display surface of the displaying device... Agent: Young & Thompson

20090052903 - System and method for expanding pcie compliant signals over a fiber optic medium with no latency: A system for expanding PCI Express (PCIe) compliant signals over a fiber optic medium with no latency. A standardized fiber optic transceiver is adapted to provide an optimal PCIe expansion over a fiber optic medium. Signal buffers are utilized to translate and fine-tune standardized PCIe traffic to a level of... Agent: Jackson Walker LLP

20090052904 - An optical connector, a communication system and a method of connecting a user circuit to an optical transceiver: The invention provides an optical connector for connecting a user circuit to an optical backplane, in use the connector being adapted for mounting on a user circuit. The connector comprises an active or passive photonic interface through which optical signals may be transmitted and received between a user circuit and... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20090052905 - Optical transmitting and receiving system: Signals can be superimposed on optical phase even when low-coherency light is used, and a bit rate and a signal coding format similar to those used in ordinary optical communications can be used. A transmitter includes an asymmetric interferometer or an antisqueezed light generator to convert a train of single... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090052906 - Optical transmission between a first unit and a plurality of second units interconnected by means of a passive optical access network: System and method of transmitting downlink and uplink data traffic between a central office terminal (15) and a plurality of customer terminals (17) Interconnected by means of a passive optical access network (5), comprising the following steps: sending data carried by an amplitude-division multiplexed optical signal (S) including a plurality... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20090052908 - System and method for optical transmission: In an example embodiment, an optical system includes an analog laser transmitter having a burst operative mode. The system may include enable logic configured to provide a digital enable signal in response to receiving a trigger signal other than a reverse electrical signal. The system may further include a power... Agent: Scientific-atlanta, Inc. Intellectual Property Department

20090052907 - Wavelength transmission system and method using 3-dimensional ldpc-coded modulation: A transmitter and method include a LDPC encoder configured to encode source data, and a mapper configured to generate three coordinates in accordance with a 3D signal constellation where the coordinates include an amplitude coordinate and two phase coordinates. A laser source is modulated in accordance with each of the... Agent: Nec Laboratories America, Inc.

20090052909 - Optical communication module and optical signal transmission method: One or more one-dimensional array-shaped photoelectric conversion modules 302 are mounted on a board 301. A one-dimensional array-shaped light receiving/emitting element 303 is mounted in each of the one-dimensional array-shaped photoelectric conversion modules 302. Further, the one-dimensional array-shaped photoelectric conversion modules 302 are mechanically and optically connected to a flexible... Agent: Sughrue Mion, PLLC

20090052910 - Automatic dual receiver in a multi-wavelength fiber optic system: An optical-to-electrical converter may include and/or involve a splitter to separate one or more narrowcast signals from a broadcast signal, at least one broadcast signal receiver to receive the broadcast signal separated from one or more narrowcast signals, at least one narrowcast signal receiver to receive the narrowcast signal separated... Agent: Fsp LLC

20090047012 - Optical bypass method and architecture: This invention pertains to optical fiber transmission networks, and is particularly relevant to transmission of high volume of data and voice traffic among different locations. In particular, the improvement teaches improvements to an optical transport system to allow for efficient and flexible network evolution.... Agent: Woodcock Washburn LLP

20090047013 - In-band optical frequency division reflectometry: An apparatus comprising an optical transmitter coupled to an optical fiber, and an optical receiver coupled to the optical fiber, wherein the transmitter is configured to transmit a test signal data pattern and user data into the optical fiber, and wherein the receiver is configured to receive a reflection of... Agent: Conley Rose, P.C.

20090047014 - Optical transmitting module and a method to sense a fluctuation of light emitted from the same: An optical transmitter is disclosed. The transmitter provides, in addition to a semiconductor laser diode as a light source, a variable polarizer with a Farady rotator and a polarization analyzer on an optical path of the laser diode. When the wavelength of the emitted light from the laser diode shifts,... Agent: Smith, Gambrell & Russell

20090047015 - Addressable fiber node: A system and method for providing a hybrid fiber network (HFN) means to identify a fiber node by a unique address. An addressing module is installed in proximity to, or collocated with, a fiber node. The addressing module comprises an addressing module identifier that associates the addressing module with a... Agent: Roberts, Mardula & Wertheim, LLC

20090047016 - Multi-access network terminal, communication method, service-providing method, and revenue-receiving method: A multi-access network terminal includes first and second communication interfaces. The first interface is configured to communicate with a first service provider providing services to a user through the first interface with a first type of signal and/or a first type of communications protocol. The second interface is configured to... Agent: Fitzpatrick Cella (tellabs)

20090047017 - Optical analog/digital conversion method and apparatus thereof: A high speed optical analog/digital conversion process with a simple configuration, in which an optical-pulse branching delay multiplexer generates as many duplicates of each optical pulse as the predetermined number of bits by branching each optical pulse string obtained by sampling an input optical analog signal, and generates a temporally... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090047018 - Method and apparatus for l3-aware switching in an ethernet passive optical network: One embodiment of the present invention provides a system that performs layer 3 (L3) aware switching in an Ethernet passive optical network (EPON) which includes a central node and at least one remote node. During operation, the system maintains a set of mapping information which indicates a correspondence relationship between... Agent: Park, Vaughan & Fleming LLP

20090047019 - Method and system for communicating optical traffic: A method for communicating optical traffic includes adding optical traffic to an optical ring comprising a plurality of nodes and communicating the optical traffic on the optical ring. The optical traffic comprises a plurality of virtual wavebands which comprise a first virtual waveband of traffic comprising a first number of... Agent: Baker Botts L.L.P.

20090047020 - Onu management method and optical line termination: In a PON system, a PON-ID assigned to a connected ONU before replacement is assigned to a newly connected ONU after the replacement and, setting data before the replacement is succeeded also after the replacement. An OLT includes a PON-ID state where a management state of the PON-ID is stored,... Agent: Mcdermott Will & Emery LLP

20090047021 - Integrated overlay card, optical line terminal and system with integrated overlay card, and methods for operating the system and terminal: An integrated overlay card, an optical line terminal with an integrated overlay card, and a method for operating an optical network. The integrated overlay card may fit at least partially within the optical line terminal. The integrated overlay card includes a wavelength dimension multiplexer/demultiplexer that overlays first signals at a... Agent: Fitzpatrick Cella Harper & Scinto

20090047022 - Remote control device: A remote control device for wirelessly controlling a second device is disclosed that allows the user to remotely control the second device using spoken commands. The remote control device is preferably dimensioned to be useful as a handheld device. The remote control device includes one or more microphones into which... Agent: Law Offices Of James E. Walton, PLLC

20090047023 - Data communications system: A base station is provided for communicating data to a mobile terminal unit by means of at least one antenna unit, wherein the at least one antenna unit is linked to the base station by means of at least one optical fibre and the at least one antenna unit is... Agent: Buchanan, Ingersoll & Rooney PC

20090047026 - Asymmetric scheduling of multiple analog inputs using a single a/d converter for fiber-optic transceivers: A firmware control method for the optimized use of a single A/D converter to measure multiple analog signals with asymmetric requirements on sampling rate including a lookup table design procedure and an acquisition algorithm. Since diagnostic analog parameter values require differing sampling rates to be effectively measured, the schedule for... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090047025 - Multiple electrical level dispersion tolerant optical apparatus: An optical apparatus consisting of a transmitter, receiver, or transceiver, utilizing a multiple level special electrical layer modulation and/or demodulation scheme to significantly lower the bandwidth required for high speed communication and/or parallel interconnect systems. It can be used either to enhance the transmission performance of the transceiver, or to... Agent: Jin Hong

20090047027 - Optical network unit transceiver module having direct connect rf pin configuration: Systems and method for using a direct connect RF pin configuration for an ONU transceiver module to connect directly to an external component. The ONU module communicates with an optical network. The ONU module further includes an RF interface and a direct connect RF pin configuration to communicate using RF... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090047024 - Optical transceiver module having a front facet reflector and methods for making and using a front facet reflector: A reflector for use in an optical transceiver module and methods for making and using the reflector are provided. The methods for making the reflector reduce the amount of processing and handling of the wafer that are required, thereby reducing manufacturing costs and increasing yield. The reflector may have a... Agent: Kathy Manke Avago Technologies Limited

20090047028 - Quadrature phase-shift keying modulator and phase shift amount controlling method for the same: The improved quadrature phase shift keying modulator has a structure such that the average light output power of phase-shift keying modulation light output from the combining unit is changed according to the phase difference between the first and the second optical signal after being combined by means of applying driving... Agent: Staas & Halsey LLP

20090047029 - Waveform shaping apparatus, receiver, reception module, and remote control receiver: A waveform shaping apparatus has a first integrating circuit 152, a second integrating circuit 153, and a first comparison circuit 154. The first and second integrated circuits 152 and 153 are connected in series with each other, and so operate that, when a voltage signal loner than a predetermined period... Agent: Fish & Richardson P.C.

20090047030 - Coherent light receiving system: In order to reduce the size and simplify the structure of a coherent light receiver, the coherent light receiver includes an optical mixer for coupling local oscillator light and reception signal light, a photoelectric converter for photoelectrically converting light coupled in the optical mixer, a reception data processing unit for... Agent: Staas & Halsey LLP

20090041454 - Soa-mzi device fault isolation: A photonic integrated circuit having a plurality of circuit components, is disclosed, which may include an MMI for splitting signal power passing therethrough among first and second optical pathways coupled to first and second outputs, respectively, of the MMI, thereby directing first and second percentages of the signal power along... Agent: Kaplan Gilman & Pergament LLP

20090041455 - Passive optical network systems with loop detection capability and methods for the loop detection: A passive optical network (PON) system with loop detection capability is disclosed. The PON system may include an optical line terminal (OLT) and an optical network unit (ONU). The PON system may also include a prober residing in at least one of the OLT and the ONU. The prober may... Agent: Ipsg, P.C.

20090041456 - Wavelength division multiplex signal monitoring system and wavelength division multiplex transmission device equipped with the same: A WDM signal monitoring system includes a measuring unit that measures power levels in a plurality of predetermined wavelength bands about a wavelength division multiplex signal, a waveform determination unit that determines an approximate waveform of each channel from each bit rate and modulation system of a plurality of channels... Agent: Staas & Halsey LLP

20090041457 - Modular wss-based communications system with colorless add/drop interfaces: Modular WSS-based Communications system with colorless and network-port transparent add/drop interfaces is described herein. According to certain aspects of the invention, equipment architecture is provided that enables a linear, ring, and mesh optical network. The embodiments of the invention are primarily on how to add and drop signals at a... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090041458 - Passive optical network system management: A passive optical network (PON) system utilizing a data link layer protocol for communication is disclosed. The PON system may include an optical network unit (ONU). The PON system may also include an optical line terminal (OLT) configured to communicate with the ONU utilizing an Ethernet frame. The Ethernet frame... Agent: Ipsg, P.C.

20090041459 - Optical fan-out and broadcast interconnect methodology: Methods are described for an optical fan-out and broadcast interconnect. A method includes operating an optical fan-out and broadcast interconnect including: fanning-out an optical signal from an optical signal emitter, of one of a plurality of nodes, with a diverging element of one of a plurality of optics; and broadcasting... Agent: John Bruckner, P.C.

20090041460 - Method and apparatus to provide bonded optical network devices: An apparatus and corresponding method for a bonded Optical Network Terminals (ONT) enhances throughput, redundancy and user-port flexibility by Passive Optical Network (PON) services, such as Gigabit-capable (GPON), Broadband PON (BPON), Ethernet PON (EPON) and future PON services, by mechanically or logically externally managing a plurality of individual ONTs as... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20090041461 - Onu management method and optical line termination: In a PON system, a PON-ID assigned to a connected ONU before replacement is assigned to a newly connected ONU after the replacement and, setting data before the replacement is succeeded also after the replacement. An OLT includes a PON-ID state where a management state of the PON-ID is stored,... Agent: Mcdermott Will & Emery LLP

20090041462 - Optical band splitter/combiner device comprising a three-arms interferometer: A three-arm-Mach-Zehnder interferometer for splitting/combining a first and a second wavelength band, wherein the optical device includes: a first and second optical splitting/combining element; a differential optical delay device comprising a first, a second and a third optical path; each of the first and second optical splitting/combining elements, is of... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090041463 - Systems and methods for providing a three-port reconfigurable optical add-drop multiplexer with an improved edge profile and add/drop flexibility: The technology described herein provides a low-cost three-port reconfigurable optical add-drop multiplexer (ROADM) with an improved edge profile and add/drop flexibility. The technology described herein further provides a tunable spectral filter utilizing two sets of gratings and lenses and a two-axis micro-electro-mechanical system (MEMS) mirror with a selectively shaped cut-out... Agent: Clements Bernard Miller

20090041464 - Anti stark electrooptic medium and electrooptically modulated optoelectronic device based thereupon: Semiconductor electrooptic medium shows behavior different from a medium based on quantum confined Stark Effect. A preferred embodiment has a type-II heterojunction, selected such, that, in zero electric field, an electron and a hole are localized on the opposite sides of the heterojunction having a negligible or very small overlap... Agent: Lerner Greenberg Stemer LLP

20090041465 - Multispectral laser with improved time division multiplexing: A laser provides a cavity with complementary wavelength-dependent delay elements to provide the same optical length but time-staggered light paths for different colors. This provides the ability to individually control multiple narrow bands of colors each in a separate time division window.... Agent: Boyle Fredrickson S.c.

20090041466 - Electronic system having free space optical elements: An electronic system includes a first circuit board having a first optical element and a second circuit board having a second optical element positioned to electronically communicate with the first optical element over free space. The system also includes a cold plate having openings positioned to enable the optical communications... Agent: Hewlett Packard Company

20090041467 - Field-configurable optical network terminal device: Described herein are systems and methods for a field-configurable optical network terminal (ONT) device at a subscriber to provide one or more communication services to the subscriber. The field-configurable ONT device is of a modular design operable for the insertion of additional communication modules or removal of existing communication modules... Agent: Motorola, Inc. Law Department

20090041468 - Method for recovering distorted optical signal by equalizing unit: A method for appropriately equalizing a distorted optical signal due to the dispersion of the optical fiber is disclosed. The equalizer unit in an optical transceiver firstly equalizes a test signal with clock period longer than an original clock period to determine a set of tap coefficients. Secondly, the equalizer... Agent: Venable LLP

20090041469 - Automatic selection of data rate for optoelectronic devices: Automatic selection and setting an operational data rate of an optoelectronic device. In particular, an integrated circuit includes a data rate select input for the selection and setting of the operational data rate. The integrated circuit internally generates a loss of lock signal if an input data rate does not... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090041470 - Multi-wavelength signal generation device and multi -wavelength light generation method: A multiple wavelength signal generation device of the present invention is a multiple wavelength signal generation device having an optical comb generator for obtaining an input light and a group of lights shifted from the input light by predetermined frequencies; and an optical adjusting portion adjusting lights to be inputted... Agent: Osha Liang L.L.P.

20090041471 - Remodulating channel selectors for wdm optical communication systems: The present invention provides a remodulating channel selector for a wavelength division multiplexed optical communication system. The remodulating selector receives a WDM input signal, selects a particular optical channel from the WDM signal and places the information from the selected signal onto a newly-generated optical output signal. The wavelength of... Agent: Clements Bernard Miller

20090041472 - Automatic adjusting system of frequency shift keying modulator: An optical modulator achieving high extinction ratio and an optical modulator system. By a control system performing an adjustment method comprising predetermined steps by applying a bias voltage daringly to a modulation electrode for switching the USB signal and LSB signal of an established optical SSB modulator or optical FSK... Agent: Ostrager Chong Flaherty & Broitman PC

20090041473 - Optical device, optical modulation method, and optical transmitter: An optical modulation device including waveform shapers that waveform-shape input data signals in synchronism with a rising or falling timing based on comparison with a reference level of an input clock signal, a multi-level phase modulator that generates a multi-level-phase-modulated optical signal based on the data signals waveform-shaped by the... Agent: Staas & Halsey LLP

20090041474 - Predistortion circuit including distortion generator diodes with adjustable diode bias: A predistortion circuit provides a predistorted input signal that compensates for distortion generated by a non-linear amplifier such as a laser device. The predistortion circuit may be used in an optical transmitter designed for broadband applications, such as a laser transmitter used for forward path CATV applications. The predistortion circuit... Agent: Applied Optoelectronics, Inc.

20090041475 - Modulator driver circuit with selectable on-chip termination: A method and apparatus to accommodate differing output loads without sacrificing impedance matching in an optical modulator driver.... Agent: Kacvinsky LLC C/o Intellevate

20090041477 - Attenuation systems and methods for use with an optical detector in an optical communication system: Systems and methods for use with an optical communication beam are disclosed. The system allows the beam of light to operate at an adequate power level that provides a robust optical link while minimizing any safety risk to humans. The system calibrates and controls the gain for an avalanche photodiode... Agent: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.

20090041476 - Method and apparatus for processing signals of photo-detector in visible light communication system: Disclosed is a method for processing incoming signals of photo-detectors in a visible light communication system. The method includes: dividing symbol duration into divided durations according to an equal time interval to set the divided durations to a plurality of time slots, the symbol duration being a time required to... Agent: Cha & Reiter, LLC

20090034963 - Method and an apparatus to provide optical equipment protection: A method and an apparatus to provide optical equipment protection have been disclosed. In one embodiment, the method includes splitting an incoming optical signal into a first and a second optical signals, sending the first and the second optical signals to a first and a second equipments in an optical... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090034964 - Communication apparatus communicating with different bit rates: In order to allow bit-interleaved-parity calculation to be easily performed while maintaining compatibility with an existing system during transmission of data having mixed bit rates, header information of a first bit rate is added to data of the first bit rate and data of a second bit rate, time-division multiplexing... Agent: Staas & Halsey LLP

20090034965 - Method and an apparatus to automatically verify connectivity within an optical network node: A method and an apparatus to provide optical equipment protection have been disclosed. In one embodiment, the method includes sending a first optical signal from an optical transceiver to a wavelength switch module (WSM), checking a second optical signal received by the optical transceiver after sending the first optical signal,... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090034966 - Optical signal monitoring apparatus and method: An optical signal monitoring apparatus includes an optical interference unit, a sampling optical pulse generation unit, an optical sampling unit, a photoelectric converter, and a computation unit. The optical interference unit includes an optical brancher, a delay device, an optical phase adjuster, and an optical multiplexer. The optical brancher branches... Agent: Frishauf, Holtz, Goodman & Chick, PC

20090034967 - Phase monitor apparatus, phase control apparatus and methods thereof for optical dqpsk receiver: I branch is provided with a first interferometer, a first balanced optical detector, and a first data recovery circuit. Q branch is provided with a second interferometer, a second balanced optical detector and a second data recovery circuit. In I branch, a mixer multiples input signal of the first data... Agent: Staas & Halsey LLP

20090034969 - Correlation apparatus: This invention relates to a pattern recognition correlator in which a serial input data signal is converted into a parallel data signal for correlation with one or more reference data signals. The invention relates to use of a demultiplexer in such a correlation apparatus to reduce the data update rate... Agent: Nixon & Vanderhye, PC

20090034968 - Optical band splitter/combiner and apparatus comprising the same: An optical device for splitting/combining a first and a second continuous optical wavelength bands, each wider than 10 nm, has a first, a second, a third, a fourth and a fifth optical splitting devices optically coupled in cascade and a first, a second, a third and a fourth optical differential... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090034970 - Optical switch controller: An optical switch controller controls an optical interconnection network that variably connects at least one input data channel to a plurality of outputs channels via at least one switching element. An address reader module has at least one semiconductor optical amplifier optically processes an optical signal. The address reader module... Agent: Coats & Bennett, PLLC

20090034971 - Multiple redundancy schemes in an optical network: Methods and apparatuses for multiple redundancy schemes in an optical network are described herein. In one embodiment, an exemplary method includes receiving a demand for allocating a first protection path that meets a first set of disjointness constraints with respect to a first working path according to a first protection... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090034972 - Optical path routing in an optical communications network: Routing method for paths in an optical network that includes nodes having limited conversion and/or regeneration capability and in which a routing algorithm based on considerations of cost of the links is employed and in which with the nodes is associated cost information that includes conversion and/or regeneration costs. Such... Agent: Coats & Bennett, PLLC

20090034973 - Passive optical network system and optical line terminal: In order to be able to moderate the inclination of the PON burst reception characteristics and to improve the FEC effect, a first offset is used in a ranging window field, and a second offset, which is lower than the first offset value, is used in a burst data field... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090034974 - Banded semiconductor optical amplifiers and waveblockers: Embodiments of the present invention provide an array of semiconductor optical amplifiers, within a photonic integrated circuit (hereinafter, “PIC”), that apply a gain to one or more optical bands within a WDM signal. According to various embodiments of the invention this array of SOAs can function as both an amplifier... Agent: Infinera Corporation

20090034976 - Maintaining correlated virtual data streams through a network: Embodiments of the invention are described in which correlated virtual data streams are managed within an optical network connection. In certain embodiments of the invention, a client signal is allocated across a plurality of transport wavelength channels according to various transposition methods. The assignment of portions of the client signal... Agent: Infinera Corporation

20090034975 - Methods and apparatuses for handling multiple failures in an optical network: Methods and apparatuses for handling multiple failures in an optical network are described herein. In one embodiment, an exemplary method includes receiving a demand for allocating a protection path that meets a set of disjointness constraints with respect to a working path, the protection path suitable to be shared with... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090034977 - Multiplexing high speed light emitting diodes (leds): A system for multiplexing a plurality of high speed light emitting diodes (HSLEDs) includes a plurality of HSLEDs. Each of the plurality of HSLEDs emits a wavelength of light at a speed greater than or equal to about 1 Gigabyte per second. A multiplexer receives the wavelengths of light from... Agent: Hewlett Packard Company

20090034978 - Directionless reconfigurable optical add and drop mesh node: A reconfigurable optical add/drop multiplexer (ROADM) with a multiplexer, demultiplexer, and a wavelength cross-connect unit provides directionless capabilities. The ROADM allows a signal not to be limited to a particular direction when added at an optical network node, for example. The signal can be sent to other directions of the... Agent: Aka Chan LLP / Cisco

20090034980 - Impedance matching circuit with simultaneous shielding of parasitic effects for transceiver modules: An RF device includes a signal layer disposed over a ground plane having radio frequency (RF) transmission lines configured and dimensioned to provide impedance matching along the RF lines. A shield is formed as a part of the RF lines and disposed below the RF choke of a DC current... Agent: Keusey, Tutunjian & Bitetto, P.C.

20090034979 - Systems and methods for broadband transmission of signals: Systems and methods which facilitate broadband transmission of signals using a delivery point tuning technique to provide a extended frequency passive optical network (EF-PON) are shown. Embodiments provide an extended frequency optical transition node (EF-OTN) at each of a plurality of delivery points to provide a frequency translation interface between... Agent: Fulbright & Jaworski L.l.p

20090034981 - Optical transceiver wtih equalizing function and a method to setup the optical transceiver: An optical transceiver and a method to setup the optical transceiver are disclosed, where the transceiver has a function to compensate the distortion and the dispersion due to the limited bandwidth of the electrical signal line, that of the active devices, and that of the optical fiber. The optical transceiver... Agent: Venable LLP

20090034982 - Integrated laser and photodetector chip for an optical subassembly: A semiconductor device with an integrated optical transmitter and optical receiver is disclosed that can be used in an optical subassembly. The device may include a substrate, a first component, an optical filter, and a second component, wherein the first component comprises an optical transmitter and the second component comprises... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090034983 - Optical transmitter-receiver subassembly and optical transmitter-receiver module: An optical transmitter-receiver subassembly including a light-emitting element which converts a current into an output optical signal, a light-receiving element which converts an input optical signal from an optical fiber into a current, a planar lightwave circuit which guides the output optical signal and the input optical signal, and comprises... Agent: Young & Thompson

20090034984 - Sonet method and system having network service access point addressing: A synchronous optical network (SONET) system having multi-hierarchal network service access point (NSAP) addressing includes electrically linked network elements (NEs) and first and second level routing areas which each include at least one NE. The NEs include devices having respective NSAP addresses and at least one of the NEs is... Agent: Brooks Kushman P.C.

20090034985 - Optical interconnect: An optical interconnect includes a first circuit board having an optical source and an optical receiver; and a second circuit board having data source and an optical modulator optically coupled with the optical source and optical receiver, wherein the optical modulator is configured to encode data from the data source... Agent: Hewlett Packard Company

20090034986 - Optical communication device: The present invention provides an optical communication device, which includes a base, an optical fiber module, a first submount, a second submount, a first light emitter, and a second light emitter. The base thereon defines a first reference axis and has a receptacle portion formed at the first reference axis.... Agent: Reed Smith LLP Suite 1400

20090034987 - Wideband electric signal mixer and optical transmitter using the same: There are provided a wideband electric signal mixer capable of mixing two inputted electric signals having a wideband frequency spectrum. The wideband electric signal mixer includes an input terminal controlling an input interface and a phase of a differential signal of a first electric signal and a second electric signal,... Agent: Lahive & Cockfield, LLP Floor 30, Suite 3000

20090034988 - Control apparatus and control method for optical modulator: An object of the invention is to provide a control system in which the phase shift between drive signals of an optical modulator can be reliably detected and compensated by a simple configuration. To this end, a control apparatus of the invention, for an optical modulator generating a signal light... Agent: Staas & Halsey LLP

20090034989 - Light signal processing device and light signal storing device: There is provided a light signal processing device. The light signal processing device includes a label recognition circuit and an electro-absorption optical switch. The label recognition circuit includes: a plurality of photodiodes coupled to each other in parallel; a resonant tunneling diode coupled in series with the photodiodes; and a... Agent: Sughrue-265550