|Optical communications patents - Monitor Patents|
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Optical communicationsBelow are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application. 12/05/2013 > 26 patent applications in 16 patent subcategories.
20130322867 - Optical transport network generic non-client specific protection systems and methods: Systems and methods for generic non-client specific 1+1 protection are described supporting a uni-directional protection scheme for client interfaces on Optical Transport Network (OTN) networking equipment, regardless of the client protocol and without hardware which can participate in those client protocols. This generic non-client specific 1+1 protection can be implemented... Agent: Ciena Corporation
20130322868 - Method and apparatus for a reconfigurable optical add/drop module with loop-back functions: A method and apparatus for approaches for troubleshooting optical networks, particularly ROADM-based networks is described. The method includes designating a first port, of an optical communication node of a transport network, as an ingress for a loop-back optical signal to troubleshoot the transport network, designating a second port, of the... Agent: Verizon Patent And Licensing Inc.
20130322869 - Passive optical fiber plant analysis: In a first aspect, the method and apparatus of the present disclosure can be used to periodically and/or intermittently place one or more ONUs attached to a PON in a power savings mode so that an OTDR test can be performed. While in the power savings mode, the ONUs temporarily... Agent: Broadcom Corporation
20130322870 - Cycle slip reduction in coherent optical communications: Carrier phase estimation techniques are provided for processing a received optical signal having a carrier modulated according to a modulation scheme. First and second carrier phase estimation operations are performed on a digital signal derived from an optical carrier obtained from the received optical signal using coherent optical reception. The... Agent: Cisco Technology, Inc.
20130322871 - Fiber network events measurement apparatus: A fiber network events measurement apparatus has a laser module alternately generating a pulse signal detecting beam and an FMCW detecting beam. The beams are sent to the fiber network route through a directional coupler. A photo detector receives feedback energy of the beams transmitting in the fiber network route... Agent: Polarlink Technologies, Ltd.
20130322873 - System and method for quantum teleportation: A system for quantum teleportation of a quantum state of an input photon, including: a light emitting diode configured to produce a polarization entangled photon pair; a beam splitter configured to direct photons of the entangled photon pair along respective first and second paths; a measurement unit performing a joint... Agent: Kabushiki Kaisha Toshiba
20130322872 - Technique for determining a propagation delay of an optical signal between two optical devices via an optical link: A method and apparatus for measuring a propagation delay of an optical signal between first and second devices in an optical transmission network, the optical signal being transmitted from the first device to the second device via a first optical fiber and from the second device to the first device... Agent: France Telecom
20130322874 - Detecting device for detecting insertion loss and return loss of individual events in an optical fiber network: A detecting device that detects insertion loss of fiber route and return loss of individual events in an optical fiber network based on signals from dual paths to obtain various kinds of reference information of the optical fiber network. When the first path is selected, a detection signal produced using... Agent: Polarlink Technologies, Ltd.
20130322875 - Optical transmission device, optical transmission system, optical transmission method and program: An optical transmission device according to the present invention comprises: a Raman amplification means; a main signal light sending means which sends first main signal light; a communication interruption detection light monitoring means which sends a first signal if it cannot detect communication interruption detection light; a main signal light... Agent: Nec Corporation
20130322877 - Digital frequency offset monitor for coherently detected optical superchannels: Techniques are provided to estimate a distance of one received optical subchannel to one or both of its neighbor (adjacent) subchannels. An optical field comprised of a plurality of subchannels of optical signals at respective wavelengths is received on an optical fiber. Using coherent optical reception in conjunction with analog-to-digital... Agent: Cisco Technology, Inc.
20130322876 - Optical communication reception system: A system configured to maintain a consistent local-oscillator-power-to-primary-signal-power ratio (LO/SIG ratio). The system may be configured to: receive the voltages for a plurality of optical signal components split from a combined SIG and LO signal; determine individual factors for the plurality of optical signal components; average the individual factors; determine... Agent: Cisco Technology, Inc.
20130322878 - Output value control method and transmission apparatus: The object of the present invention is to reliably prevent deterioration and failure of reception relevant parts in a transmission apparatus on a reception side without using an attenuator. An output value control method that controls an output value of output information transmitted from each of transmission apparatuses, in which... Agent: Hitachi, Ltd.
20130322879 - Matrix router and method of switching: A matrix router and method of switching comprising a combined input stage and output stage (I/O stage) having m matrix switch(es), each matrix switch having n inputs and n outputs, each input of said n inputs switchable within said matrix switch to any output of said n outputs, k core... Agent: Thinklogical, LLC
20130322880 - Clock and data recovery unit and power control method therefor and pon system: In the present invention, wasted power consumption caused when a clock and data recovery unit in an optical network unit in a PON system is activated from a power-saving state is reduced and rapid, secure communication is performed. A clock and data recovery unit includes a phase-locked loop that can... Agent: Sumitomo Electric Industries, Ltd.
20130322881 - Optical transmission with polarization division multiplexing: A optical transmitter and method for transmitting digital data on an optical channel, performing the steps of generating first and second baseband digital signals, modulating a first polarized optical carrier wave component in accordance with the first baseband digital signal, modulating a second polarized optical carrier wave component in accordance... Agent:
20130322882 - Method and apparatus of building a coaxial convergence layer in ethernet passive optical network (pon) over coaxial network (epoc): An apparatus comprising a data framer comprising a physical layer protocol stack comprising a coax convergence layer, a coax framing layer next to the convergence layer, wherein the coax framing layer is configured to decompose and assemble data packets in a coax network, a coax coding layer next to the... Agent:
20130322883 - Resilience in an access subnetwork ring: Embodiments herein include a resilient add-drop module for use in one of multiple access subnetwork nodes forming an access subnetwork ring. The module comprises a dual-arm passive optical filter and a cyclic arrayed waveguide grating (AWG). The dual-arm passive optical filter is configured to resiliently drop any wavelength channels within... Agent:
20130322884 - Distributed communications system employing free-space-optical link(s), and related components and methods: Distributed communications systems employing one or more free-space-optics (FSO) links, and related components and methods are disclosed. In one embodiment, a distributed communications system is provided in which one or more links of a communications path located between a central unit and a remote unit include FSO provided by one... Agent:
20130322885 - Down-sampling clock and data recovery circuit having selectable rate and phase output and method of operation thereof: A clock and data recovery (CDR) circuit, a method of recovering a clock and data from a received raw data stream and a BI-PON optical network transceiver (ONT) receiver front-end incorporating the CDR circuit. In one embodiment, the CDR circuit includes: (1) a line rate CDR circuit having a voltage... Agent: Alcatel-lucent Usa, Inc.
20130322886 - Optical transmission circuit and optical transmission/reception circuit module: An optical transmission circuit comprises a light emitting element and a differential amplifier circuit to which differential input signals are input to modulate an optical output of the light emitting element. The differential amplifier circuit includes a first current source, a first transistor, a second transistor, a third transistor, and... Agent: Kabushiki Kaisha Toshiba
20130322890 - Hybrid laser including anti-resonant waveguides: Described are embodiments of apparatuses and systems including a hybrid laser including anti-resonant waveguides, and methods for making such apparatuses and systems. A hybrid laser apparatus may include a first semiconductor region including an active region of one or more layers of semiconductor materials from group III, group IV, or... Agent:
20130322887 - Optical communications card, an optical communications system, and methods and apparatuses for providing high-density mounting of optical communications cards: An optical communications card is provided that has multiple parallel optical communications modules mounted on one or both sides of the card. A plurality of the optical communications cards can be edge-mounted and/or mid-plane mounted in an optical communications system such that the cards are electrically connected to a motherboard... Agent: Avago Technologies FiberIP(singapore) Pte. Ltd.
20130322888 - Optical transmission circuit device, optical reception circuit device, optical transmission/reception circuit device and optical transmission method: An optical transmission circuit device generates first and second optical signals from differential set and reset signals each time digital electric input signals of N bits are received. The differential set signal indicates an increase in signal strength relative to immediately preceding N bits of the digital electric input signals... Agent: Kabushiki Kaisha Toshiba
20130322889 - Rotary transmission device for machine tools: The invention relates to a rotary transmission device for machine tools, comprising a stator part that is rigidly attached to the machine, a rotor part that is rigidly attached to the tool and can be rotated about a rotational axis, and stator-side and rotor-side transmitting and receiving elements for bidirectionally... Agent:
20130322891 - Nanotube signal transmission system: A method and apparatus for transmitting signals. An apparatus comprises a tube comprising a number of layers of carbon forming a wall of the tube. The number of layers of carbon has a number of optical properties configured to propagate an optical signal and a number of electrical properties configured... Agent: The Boeing Company
20130322892 - Integrated optical phased array: An integrated optical phased array includes an input channel receiving an optical input signal, and a multitude of signal processing channels each adapted to supply an associated optical output signal along a first axis in response to the input signal. Each signal processing channel includes, in part, a phase modulator... Agent: California Institute Of Technology11/28/2013 > 31 patent applications in 21 patent subcategories.
20130315579 - Method and system for providing a shared demarcation point to monitor network performance: An approach for detecting an error associated with a routing network coupled to a transport network comprising a plurality of optical communication nodes, switching, by an optical communication node, to a troubleshooting channel associated with the transport network using one or more router counterpart cards, and troubleshooting the error using... Agent: Verizon Patent And Licensing Inc.
20130315580 - Software defined networking photonic routing systems and methods: A network includes a plurality of interconnected nodes utilizing an all-broadcast architecture for a plurality of wavelengths therebetween; a routing protocol configured to compute a loop-free path through the plurality of interconnected nodes, wherein the loop-free path is computed for at least one wavelength of the plurality of wavelengths using... Agent: Ciena Corporation
20130315581 - Optical transmission system including optical emitting device and optical receiving devices: An optical transmission system includes an optical emitting device and a plurality of optical receiving devices. The optical receiving devices are optically connected in series and one of the optical receiving devices is optically connected to the optical emitting device. Each of the optical receiving devices includes a control module,... Agent: Hon Hai Precision Industry Co., Ltd.
20130315582 - Optical communication module, method for recording log of optical communication module, and optical communication apparatus: An optical communication module includes a control unit and a nonvolatile memory. The control unit detects an abnormality of the optical communication module, generates log information regarding the detected abnormality, and writes the log information in the nonvolatile memory. After the number of times the log information has been written... Agent: Sumitomo Electric Industries, Ltd.
20130315583 - Optical switch: An optical switch include a switch unit including a light reflection unit of which the reflection direction is changeable, the switch unit configured to optically connect an input port to an output port via the light reflection unit by changing the reflection direction of the light reflection unit; a determining... Agent: Fujitsu Limited
20130315584 - Backdoor diagnostic communication to transceiver module: Exemplary embodiments of the invention relate to an optical transceiver module having a diagnostic communications link, wherein the link is configured to access diagnostic and other data contained within the transceiver controller via a backdoor interface. Controller data, including operational parameter values and module setup values, is accessible while the... Agent: Finisar Corporation
20130315585 - Passive wavelength division multiplexing device for automatic wavelength locking and system thereof: Through wavelength locking that adjusts a wavelength of an optical signal, which changes according to an external environment such as a temperature change, into a wavelength of an optical signal having the maximum optical intensity, communication quality may be maximized by securing a stable communication channel, a locking time and... Agent: Solid Systems, Inc.
20130315588 - Appliance and arrangement for optical signal transmission by means of optical wave-guides: An appliance for optical signal transmission using optical waveguides in explosion-hazard areas, in particular in underground mining, includes an optical transmitter, having an optical output interface for connection of an optical waveguide transmission path and having a device for limiting the light power. An arrangement for bi-directional optical signal transmission... Agent: Caterpillar Global Mining Europe Gmbh
20130315587 - Communication system, communication-line switching method, and master station device: A communication system in which a combination of redundant configurations of communication lines and a power-saving-mode operating function is incorporated, and includes a power-saving-device identification unit that identifies a slave station device in a power saving mode, and a line switching unit that switches a communication line forming a communication... Agent: Mitsubishi Electric Corporation
20130315586 - Terabit top-of-rack switch: One embodiment of the present invention provides a switch. The switch includes a printed circuit board (PCB), a number of multi-channel optical transceivers mounted on the PCB, and a number of switch ports accessible from a front panel of the switch. The switch ports include a number of electrical interfaces... Agent: Brocade Communications Systems, Inc.
20130315590 - Method and apparatus for analyzing the spectrum of radio-frequency signals using unamplified fiber optic recirculation loops: An apparatus for generating a frequency spectrum of an RF signal comprising a gate switch for generating a series of pulses from a laser of wavelength lambda modulated by an input RE signal, a first fiber optical loop for circulating a first percentage of a first pulse of the series... Agent: U.s. Army Research Laboratory Attn: Rdrl-loc-i
20130315589 - Method, system, and apparatus for wavelength switching on multi-wavelength passive optical network: The present application provides a method for wavelength switching on a multi-wavelength passive optical network, including: duplicating, when an optical network unit needs to switch from a first wavelength channel to a second wavelength channel, downlink data to be sent to the optical network unit into multiple copies, and sending... Agent:
20130315591 - Optical transmission apparatus: An optical transmission apparatus according to the present invention includes: wave splitter (101) splitting an input optical signal into a plurality of wavelength bands; a plurality of optical switches (111-113) composed of optical shutters or variable optical attenuators that pass or shut off split optical signals corresponding to a plurality... Agent: Nec Corporation
20130315592 - Method for configuring end-to-end lower order odu network trails across optical transport network: The disclosure relates to a method of configuring end-to-end ODUj (lower order ODU) network trails across OTN (Optical Transport Network), in which the tributary port number (TPN) of the lower order ODUj inside higher order ODUk is specified. The time-slot value associated with the TPN is not to be specified... Agent: Tejas Networks Limited
20130315594 - Method, system, and device for transmittng optical network terminal management and control interface message: The present application discloses a method, a system and a related device for transmitting an OMCI message. In the method, an optical line terminal device sends configuration information to an optical network terminal device, where the configuration information is configured to instruct the optical network terminal device to configure a... Agent: Huawei Technologies Co., Ltd.
20130315593 - System and method for applying an extended multipoint protocol to wireless access systems: A system and method for applying an extended multipoint control protocols to wireless access systems. A medium-to-medium adaptor can be provided in an adaptor node that can interface with an upstream optical line terminal in a PON domain and a downstream device in a non-PON wireless domain. The medium-to-medium adaptor... Agent: Broadcom Corporation
20130315596 - Optimized dynamic bandwidth scheduler: A method allocating timeslots for transmission of data packets and REPORT messages in a communication network including plural logical links managed by a terminal, including: implemented at each cycle by the terminal receiving at least one REPORT message from at least one logical link, the REPORT message including an updated... Agent: Mitsubishi Electric R&d Centre Europe Bv
20130315595 - Time division duplexing for epoc: A method, system and computer program for implementing TDD in an EPoC network. An OLT or CLT scheduler segregates the US traffic from the DS traffic to avoid collisions. An OLT transmits and receives payloads through an OCU. An OLT or CLT transmits downstream payloads and GATE grants destined for... Agent: Entropic Communications, Inc.
20130315597 - Photonic compressive sensing receiver: A photonic implementation of the modulated wideband converter (MWC) is described. The highly scalable compressive sensing receiver architecture uses photonic components for analog front-end compression and downconversion, allowing scalable data conversion over an extremely wide instantaneous surveillance bandwidth, limited only by the peak anticipated signal occupancy and application-dependent size, weight,... Agent: Vadum, Inc.
20130315598 - System and method for use in wavelength division multiplexer: A system and method are presented for use in dense wavelength division multiplexing. According to this technique, K spatially separated broadband optical beams are produced comprising respective K arrays of spectral components arranged with certain common periodicity, P, where the spectral components present data channels and are arranged in interleaved... Agent:
20130315599 - Tunable multi-wavelength optical transmitter and transceiver for optical communications based on wavelength division multiplexing: Techniques, devices and systems for optical communications based on wavelength division multiplexing (WDM) that use tunable multi-wavelength laser transmitter modules.... Agent:
20130315600 - Registration of device characteristics with optical layer for use in establishing connections through an optical network: Disclosed are, inter alia, methods, apparatus, computer-storage media, mechanisms, and means associated with registration of optical device characteristics of optical network devices with an optical control layer of the optical network for use in establishing compatible connections through the optical network. Especially end network devices and internal network optical devices... Agent: Cisco Technology, Inc., A Corporation Of California
20130315601 - Optical transmission device: The present invention reduces the number of amplifiers and reduces the maximum output of an optical transmission device. A wavelength selection unit selects and outputs, as a drop signal, any given wavelength of optical signal from an input optical signal. An amplifier amplifies at each wavelength the drop signal output... Agent: Nec Corporation
20130315602 - Optical transmission device: A wavelength selection unit selects and outputs, as a drop signal, any given wavelength of optical signal from an input optical signal. At each wavelength, an amplifier amplifies the drop signal output by the wavelength selection unit. In this case, the number of amplifiers is set lower than the number... Agent: Nec Corporation
20130315603 - Enterprise cognitive radio integrated with laser communications: A wireless data access system is provided to ameliorate bursty traffic occurring in a radio communications link such as a WiFi, WiMAX, 3G or cellular telephone link to a wireless network access device. A data traffic event is detected relating to traffic in the link. The traffic event may be... Agent: At&t Intellectual Property Ii, Lp.
20130315604 - Mobile bi-directional free-space optical network: The system provides a mobile, full bi-directional, free-space optical (FSO) network providing networkability and internet connectivity. Each mobile system has a FSO transceiver communicating via line-of-sight (LOS) with a stationary FSO transceiver. Alternatively, the mobile system communicates with a relay FSO transceiver that is in contact with another relay and/or... Agent: The Board Of Regents Of The University Of Oklahoma
20130315605 - Safety system: A nodal system (10) includes a unit (D) having a memory (42) and an optical data receiver (36), and a common control unit (12) in communication with the unit. A method of commissioning the system comprises the steps of activating the optical data receiver on the unit, and transmitting an... Agent: Thorn Security Limited
20130315606 - Distributing clock synchronization information within an optical communications network: A method and system of distributing clock synchronization information within an optical communications network including a plurality of network elements, in which a first network element receives an ingress clock synchronization message, the ingress clock synchronization message including a clock synchronisation message identifier and a correction field. The first network... Agent: Telefonaktiebolaget L M Ericsson (publ)
20130315607 - Low cost direct modulation and coherent detection optical ofdm: System and method for compensating distortions introduced by an optical channel and by at least one directly modulated transmitting laser that transmits a modulated optical signal that carries data to a receiving end over the optical channel. At the receiving end, the transmitted signal is received by a coherent receiver... Agent: Ben-gurion University Of The Negev, Research And Development Authority
20130315608 - Bidirectional and double-frequency optical transmission module and transmission assembly: An optical transmission assembly includes a base plate, an optical signal emitting member, an efferent optical fiber, an optical coupler, an afferent optical fiber, and an optical signal receiving member. The optical signal emitting member is mounted on or besides the base plate. The optical signal isolator is mounted on... Agent:
20130315609 - Method with improved phase robustness in coherent detected optical system: An optical signal receiver tracks local oscillator frequency offset (LOFO) and compensates for the phase distortion introduced in the received signals as a result of utilizing the local oscillator within a coherent detection scheme. This phase distortion is basically a constant phase rotation caused by the LOFO and implementation of... Agent: Futurewei Technologies, Inc.11/21/2013 > 25 patent applications in 19 patent subcategories.
20130308936 - Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition: An optoelectronic transceiver includes an optoelectronic transmitter, an optoelectronic receiver, memory, and an interface. The memory is configured to store digital values representative of operating conditions of the optoelectronic transceiver. The interface is configured to receive from a host a request for data associated with a particular memory address, and... Agent: Finisar Corporation
20130308937 - Wdm pon with non tunable legacy onus: In one embodiment, a media access controller includes first and second optical line terminals with a receiver for adjacent first and second wavelength ranges, respectively, and an optical network unit with a transmitter having a transmitter wavelength which drifts between the first and the second wavelength range. The media access... Agent: Alcatel-lucent
20130308939 - Infrared communication system and method: A communication system and method utilizing an infrared signal emitter communicating a predefined signal, and an infrared signal receiver capable of receiving such predefined signal, distinguishing such predefined signal within a field of view of the infrared signal receiver, and providing output indicating the location of the infrared signal emitter... Agent:
20130308938 - Optical component, optical fiber amplifier using the same, and laser device using the same: An optical component includes: a glass capillary; an optical fiber for light to be measured which is inserted into the through-hole of the glass capillary; at least one optical fiber for leak light which is inserted into the through-hole of the glass capillary; and an output optical fiber having one... Agent: Fujikura Ltd.
20130308940 - Multiple interferer cancellation for communications systems: An interference cancellation system (ICS) may be used with a communication system to prevent or minimize interference from one or more sources. The ICS may receive radio RF signals comprised of one or more signals of interest (SOI) and multiple interfering signals. The ICS may use a sample of the... Agent:
20130308941 - Energy efficient ethernet network capability and feature exchange in optical network links: In interfaces such as optical physical layer devices that do not support auto-negotiation, configuration of an energy efficiency Ethernet operation can be enabled through higher-layer protocol messaging that advertises energy efficiency capabilities and features between link partners. The higher-layer protocol messaging occurs after optical communication is established.... Agent: Broadcom Corporation
20130308942 - Optical memory system including an optically connected memory module and computing system including the same: An optical memory system according to example embodiments includes a plurality of memory modules, each memory module including a plurality of memory devices; a light source; a light distribution unit connected to the light source through a first optical transmission line; a plurality of second optical transmission lines connected between... Agent:
20130308943 - Optical transport network clock transient suppression systems and methods: An Optical Transport Network (OTN) method, an OTN switching node method, and an OTN node utilize a “double wrapper” configuration to eliminate clock transients in OTN networks. That is, the systems and methods bury an ODU beneath another overclocked ODU thereby eliminating any interruptions due to clock transients, framing events... Agent:
20130308944 - Butterfly optical network with crossing-free switches: In a multi-chip module (MCM), optical waveguides in a first plane convey modulated optical signals among integrated circuits (which are sometimes referred to as ‘chips’). Moreover, an optical-butterfly switch, optically coupled to the optical waveguides, dynamically allocates communication bandwidth among the integrated circuits. This optical-butterfly switch includes optical components in... Agent: Oracle International Corporation
20130308945 - Ospfte extension to support gmpls for flexible grid: A method and system are disclosed in which a link state advertisement message (LSA) conforming to a Generalized Multiprotocol Label Switching (GMPLS) routing protocol is generated and transmitted. The LSA is associated with a TE Link between a transmit node and a receive node in a network. The transmit node... Agent: Infinera Corp.
20130308946 - Optical switching architectures for nodes in wdm mesh and ring networks: Switching architectures for WDM mesh and ring network nodes are presented. In mesh networks, the switching architectures have multiple levels—a network level having wavelength routers for add, drop and pass-through functions, an intermediate level having device units which handle add and drop signals, and a local level having port units... Agent: Cisco Technology, Inc.
20130308947 - Method of optical data transmission using polarization division multiplexing: Proposed is a method of optical data transmission. A first data signal and a second data signal are received at a same sampling rate. A third data signal and a fourth data signal are generated, using the first and the second data signal, wherein the two data signals are delayed... Agent:
20130308948 - Extending control plane functions to the entwork edge in an optical transport network: A method of extending the control plane to a network edge for a network having first set of nodes of the network are designated as core nodes, each core node being operable to route subscriber traffic between a pair of neighbour core nodes and a second set of control-plane enabled... Agent:
20130308949 - Optical orthogonal frequency division multiple multiplexing receiver and optical signal receiving method thereof: Provided is an optical OFDM receiver. The optical OFDM receiver receives an optical signal dependent on the nonlinearity of a transmitter. The optical OFDM receives includes an optical down converter, a nonlinearity compensator, and an OFDM demodulator. The optical down converter converts the optical signal into an electrical signal. The... Agent: Electronics And Telecommunications Research Institute
20130308950 - Optical pass-band filtering method and device and a device for inserting/extracting a frequency multiplexed optical sub-band into/from an optical signal: An optical pass-band filtering device comprises a duplicator able to provide duplicates of an optical signal to at least a first and a second output port; a first optical filtering unit connected to the first output port of the duplicator, said unit having a transfer function that decreases between a... Agent: Orange
20130308951 - Wavelength tunable array for data communications: Systems and apparatus for data communications comprising a plurality of wavelength tunable submodules in an array is provided. Each submodule has a wavelength tunable laser, and each submodule comprises, as an individual unit, a self-contained wavelength locker having optical and/or optoelectronic functions. The system may be a transponder array comprising... Agent:
20130308952 - Small form factor, pluggable, analog optical transmitter and host module: A method includes hosting a plurality of transmitter modules with a host module, where the host module includes common circuitry shared by the plurality of pluggable transmitter modules. An apparatus includes a host module; and a plurality of transmitter modules coupled to the host module, where the host module includes... Agent: Aurora Networks
20130308953 - Universal host module for a pluggable optical transmitter: A method includes tuning a host module to a reference module standard; and adjusting each of a plurality of pluggable optical modules coupled to the host module to mimic the reference module standard for a set of load conditions. An apparatus includes a host module tuned to a reference module... Agent: Aurora Networks
20130308955 - Coding scheme and method for a colour-shift-keying constellation in a visible-light communication system: A coding scheme for a colour-shift-keying constellation in a visible-light communication system is provided, whereby a minimum number of flipped bits between symbols assigned to neighbouring symbol points in the constellation is aimed. Improved assignments of symbol values to symbol points of the constellation may be provided, which may be... Agent:
20130308954 - Method and apparatus with error correction for dimmable visible light communication: An apparatus and method using error correcting for visible light communication are provided. The error correction includes generating an encoded message from an original message by using a predetermined coding method, puncturing the encoded message based on a determined dimming value or rate, and/or puncturing rate, generating a scrambled message... Agent: Samsung Electronics Co., Ltd.
20130308956 - Quantum based information transfer system and method:
20130308957 - Optical microphone: An optical microphone includes: an acousto-optic medium section having a pair of principal surfaces and at least one lateral surface provided therebetween; a restraint section which is in contact with the at least one lateral surface for preventing a shape change of the acousto-optic medium section; and a light emitting... Agent: Panasonic Corporation
20130308958 - Method and system for implementing time synchronization: The present disclosure discloses a method and a communication system for time synchronization. The system includes at least one base station, an optical line terminal OLT, and a fiber for transmitting information between the base station and the OLT. The system further includes a clock synchronization server, configured to transmit... Agent: Huawei Technologies Co., Ltd.
20130308959 - Directly modulated laser for pon applications: In an embodiment, a distributed Bragg reflector (DBR) laser includes a gain section and a passive section. The gain section includes an active region, an upper separate confinement heterostructure (SCH), and a lower SCH. The upper SCH is above the active region and has a thickness of at least 60... Agent: Finisar Corporation
20130308960 - Digital signal processing apparatus: A parameter of an adaptive filter is optimized so that inter-symbol interference having an amount corresponding to an inserted fixed filter remains. A digital signal processing apparatus which is included in an optical signal receiver and processes a digital signal converted from an optical signal is provided with: a linear... Agent: Nippon Telegraph And Telephone Corporation11/14/2013 > 17 patent applications in 15 patent subcategories.
20130302026 - Apparatus and method for searching a communication network including an asymmetry node for a route: An apparatus searches for one or more first routes coupling starting and ending point nodes in a communication network including an asymmetry node, based on topology information indicating a connection relationship between nodes on the communication network. The apparatus determines, for each of the one or more first routes, whether... Agent: Fujitsu Limited
20130302027 - Optical measurement method and system: The present application is directed to the measurement of the intensity and phase of high speed optical signals. The present application uses a tunable optical local oscillator, an optical coupler, a photodiode and RF electronics. The tunable laser enables successive measurements to be taken across the optical spectrum allowing the... Agent: Dublin City University
20130302028 - Optical subchannel routing, protection switching and security: The present invention includes novel techniques, apparatus, and systems for optical WDM communications. Tunable lasers are employed to generate subcarrier frequencies representing subchannels of an ITU channel to which client signals can be mapped. Client circuits can be divided and combined before being mapped, independent of one another, to individual... Agent:
20130302029 - Wavelength tuning time measurement apparatus and method for multi-wavelength passive optical network: A wavelength tuning time measurement apparatus and method for a multi-wavelength passive optical network (MW PON) are provided. The wavelength tuning time measurement apparatus for measuring a wavelength tuning time of a wavelength-variable light source included in the MW PON system includes an optical filter configured to pass only light... Agent:
20130302030 - System for long reach xdsl over fiber: System for connecting a plurality of digital subscribers to a data network, comprising a local part connected, by an optical fiber link, to a remote part. Said local part comprises a plurality of DSLAM line cards with xDSL over fiber transceiver that, in turn, comprise a plurality of xDSL lines... Agent:
20130302031 - Optical transmitter and optical signal transmission method: An optical transmitter includes: an optical modulator configured to generate an optical signal from a plurality of transmission signals; a crosstalk monitor configured to monitor crosstalk between the plurality of transmission signals by using the optical signal; and a crosstalk canceller configured to correct the plurality of transmission signals based... Agent: Fujitsu Limited
20130302032 - Optical multiplexer / demultiplexer: An optical multiplexer/demultiplexer includes a first fiber unit having an MCF and a GRIN lens, a second fiber unit having an MCF and a GRIN lens, and an optical filter. The optical filter is disposed between the GRIN lens of the first fiber unit and the GRIN lens of the... Agent:
20130302033 - Dynamic assignment of wavelengths in agile photonic networks: In an automatically switched optical network, the wavelengths are assigned to optical path based on their intrinsic physical performance and on the current network operating parameters. The wavelength performance information is organized in binning tables, based primarily on the wavelength reach capabilities. A network topology database provides the distance between... Agent: Alcatel Lucent
20130302034 - Accessing lp transponders with cp terminals via wavefront multiplexing techniques: The invention is about a method and apparatus for grouping multiple satellite transponders with both (LP) polarization formats in different frequencies through Wave-Front (WF) Multiplexing (muxing) techniques for ground terminals with incompatible (CP) polarization formats. As a result of this invention, linear polarized (LP) transponders can be accessed and efficiently... Agent:
20130302035 - Optical amplifying apparatus and optical transmission system: An optical amplifying apparatus that amplifies a wavelength-division multiplexed (WDM) optical signal includes an input section, a laser light source, a double-clad optical fiber, a gain equalizer, and a residual pump light attenuating section that attenuates a residual pump light outputted from the double-clad optical fiber. The residual pump light... Agent:
20130302036 - Circuit board assembly having optical transceivers for signal transmission: A circuit board assembly includes a first circuit board, and a second circuit board, a first optical transceiver, a number of first light wave guides, a second optical transceiver, and a number of second light wave guides. The first circuit board defines a number of first through holes. The second... Agent: Hon Hai Precision Industry Co., Ltd.
20130302037 - Device for sending and receiving sata signals over an optical fiber link: A system for transmitting an optical signal between a host and a device according to a SATA protocol. The system comprises a transmitting-side converter for generating a logic one voltage value responsive to a data one value from an information source, for generating a logic zero voltage value responsive to... Agent:
20130302038 - Electronic dispersion correction circuit for optical transmission system: A dispersion correction circuit is provided for use with an input driving signal. The dispersion correction circuit includes an input portion, an output portion and a filter portion. The input portion is arranged to receive the input driving signal. The output portion can output an output signal based on the... Agent: General Instrument Corporation
20130302039 - Electronic dispersion correction circuit for optical transmission system: A dispersion correction circuit is provided for use with an input driving signal. The dispersion correction circuit includes an input portion an output portion and a filter portion. The input portion is arranged to receive the input driving signal. The output portion can output an output signal based on the... Agent: General Instrument Corporation
20130302040 - Optical-electrical conversion module and optical transmission assembly using the same: An optical transmission assembly includes a first optical-electrical conversion module, a second optical-electrical conversion module and a optical waveguide connecting the first and the second optical-electrical conversion modules for transmitting optical signals. The first optical-electrical conversion module and the second optical-electrical conversion module each includes a circuit board, an optical... Agent:
20130302041 - Optical receiver and method for optical reception: In order to improve degradation of receiving sensitivity caused by analog characteristics degradation in an optical receiver, the optical receiver includes: the first coefficient computing unit for computing the first equalization filter coefficient for compensating the first waveform distortion caused and formed by an optical transmission path; the second coefficient... Agent: Nec Corporation
20130302042 - Optical receiver: An optical receiver is provided with a photoelectric converter that outputs an electrical signal according to light that is received by a light-receiving region. The optical receiver is provided with a condensing lens and optical filter that are located in an optical path from where signal light enters towards the... Agent: Mitsubishi Electric CorporationPrevious industry: Photography
Next industry: Electrophotography
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