Patents
Patents for H04B 10 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication (73,125)
06/2004
06/17/2004US20040114928 Access method for data packet networks
06/17/2004US20040114927 Regulating radiation component power in wavelength division multiplexed optical communication systems
06/17/2004US20040114926 BPSR optical transmission node
06/17/2004US20040114925 Method and system for providing protection in an optical communication network
06/17/2004US20040114924 System and method for managing an optical networking service
06/17/2004US20040114923 OSNR monitoring method and apparatus using tunable optical bandpass filter and polarization nulling method
06/17/2004US20040114863 Colorless tunable dispersion compensator
06/17/2004US20040114857 Tunable pulse width generation of return-to-zero format for system optimization
06/17/2004US20040114852 Integrated wavelength combiner/locker
06/17/2004US20040114650 Optical transmission module
06/17/2004US20040114646 Calibration of a multi-channel optoelectronic module with integrated temperature control
06/17/2004US20040114215 Control system and method for an optical amplifier
06/17/2004US20040114213 Optical repeater having independently controllable amplification factors
06/17/2004US20040114212 Wideband Amplifier with erbium-doped fiber
06/17/2004US20040114149 WDM channel monitor and wavelength locker
06/17/2004US20040113060 Chromatic dispersion compensating apparatus and controlling method of the same
06/17/2004US20040113056 Optical interrogation system and sensor system
06/17/2004DE10307542A1 Determining optical fiber defect locations involves emitting light pulses while simultaneously feeding pulses into shift register for simultaneous comparison of sub-patterns after each register stage
06/17/2004DE10255165A1 Coupling out monitor signals from message transmission paths involves coupling out from before saturatable element so power of transmission signals reduced by coupling out exceeds saturation power
06/17/2004CA2504622A1 Control of peaking of laser driver current to improve eye quality
06/16/2004EP1429486A2 Optical transmission node for a bidirectional path switched ring
06/16/2004EP1429479A1 Method and device for realising an optical link with laser pulses
06/16/2004EP1429477A2 Optical power measuring system, terminal station and repeater therefor
06/16/2004EP1429476A2 Optical power measuring system, terminal station and repeater therefor
06/16/2004EP1429475A2 Optical power measuring system, terminal station and repeater therefor
06/16/2004EP1429304A2 Driver information system
06/16/2004EP1429164A2 Optical communication device
06/16/2004EP1428407A1 Optical switching device for wavelength division multiplex (wdm) telecommunications network
06/16/2004EP1428333A2 Ring network made using a dual optical data bus
06/16/2004EP1166469A4 Atmospheric optical communication
06/16/2004EP1078481A4 Method and apparatus for automated time domain monitoring in optical networks
06/16/2004EP0880832B1 Optical pulse source
06/16/2004EP0872048A4 Discriminating infrared signal detector and systems utilizing the same
06/16/2004EP0845175B1 Compensation of dispersion
06/16/2004EP0804835B1 Multi-tone phase modulation for light wave communication system
06/16/2004CN1505355A Terminal, data distribution system comprising such a terminal and method of re-transmitting digital data
06/16/2004CN1505302A A broad band online fineness compensation arrangement
06/16/2004CN1505287A Method and system for determining optical dispersion displacement optical fiber L band transmission system
06/16/2004CN1505286A Method for generating sideband reinforcement nulling operation code and transmitter therefor
06/16/2004CN1505285A Method and system for determining optical dispersion displacement optical fiber C band transmission system
06/16/2004CN1505284A A distributed fault-locating method in a total optical network
06/16/2004CN1505283A Optical fiber communication network protection system
06/16/2004CN1505282A Forward error correction encoder
06/16/2004CN1505281A Optical network terminal apparatus
06/16/2004CN1504789A 光学系统模块 Optical System Module
06/16/2004CN1504365A Electronic license tag for automobile
06/16/2004CN1154281C High-capacity fibre-optical network working in 1.4 mu m range
06/16/2004CN1154280C Wavelength dispersion compensation apparatus in wavelength multiplex transmission system
06/16/2004CN1154264C Signal transmitter with automatic output control
06/16/2004CN1154014C Optic amplifier, and optic transmission system using the same
06/15/2004US6751422 Spatial light communication equipment comprising angle error detection and alignment units
06/15/2004US6751421 Optical fiber communication system employing wavelength converter for broadband transmission
06/15/2004US6751420 Infrared transceiver assembly for asymmetric data transmission
06/15/2004US6751418 WDM optical network with passive pass-through at each node
06/15/2004US6751417 Fiber and wire communication system
06/15/2004US6751414 Circuit and channel assignment plan for optical transmissions
06/15/2004US6751413 Channel mask definition for monitoring wavelength division multiplexing transmission systems
06/15/2004US6751385 Method and device for measuring the waveform of an optical signal
06/15/2004US6751371 Method and apparatus for optical element management
06/15/2004US6751013 Gain-clamped semiconductor optical amplifiers with adjustable gain levels
06/15/2004US6751012 Method and apparatus for measuring noise figure in optical amplifiers
06/15/2004US6751002 Method and apparatus for semiconductor-based integrated polarization modulator/compensator
06/15/2004US6750973 Test structure for simultaneously characterizing two ports of an optical component using interferometer-based optical network analysis
06/15/2004US6750956 Method and apparatus for on-line monitoring of polarization mode dispersion in a transmission system
06/15/2004US6750463 Optical isolation apparatus and method
06/15/2004US6750443 Variable optical attenuator having a splitter to monitor light signals
06/15/2004US6750440 Opto-electrical actuation system and method
06/10/2004WO2004049718A1 Transmitter in a digital return link for use in an hfc network
06/10/2004WO2004049603A1 Information support system
06/10/2004WO2004049602A2 Optical frequency modulated transmitter
06/10/2004WO2004049601A1 Distribution of a synchronization signal in an optical communication system
06/10/2004WO2004049054A1 Light source in optical transmission system, waveform shaper, optical pulse train generator, and optical reproduction system
06/10/2004WO2004048920A1 Method and device for ascertaining defects in optical fibers
06/10/2004WO2004011950A3 High sensitivity, high resolution detection of signals
06/10/2004US20040111753 Centralized nodes in a fiber optic network
06/10/2004US20040109697 Dynamic distortion control
06/10/2004US20040109696 Optical transmission controller
06/10/2004US20040109694 Gain setting method in wavelength division multiplex transmission equipment
06/10/2004US20040109692 FSO communication systems having high performance detectors
06/10/2004US20040109691 Optical pulse separation method and optical pulse separation device
06/10/2004US20040109686 Architecture for metropolitan dense wavelength division multiplex network with all-optical reference node
06/10/2004US20040109685 Method and apparatus for optical add/drop multiplexing in optical networks
06/10/2004US20040109684 Bidirectional wavelength division multiplexing self-healing ring network
06/10/2004US20040109662 Method and system for operating a plurality of electronic variable optical attenuators (eVOAs)
06/10/2004US20040109661 Method and apparatus for controlling a variable optical attenuator in an optical network
06/10/2004US20040109655 Method and system for dispersion maps and enhanced distributed gain effect in long haul telecommunications using distributed and remotely pumped erbium-based amplification
06/10/2004US20040109639 Method of optically producing clock and apparatus thereof
06/10/2004US20040109638 Gain equalizer and optical amplification apparatus
06/10/2004US20040109637 Variable optical dispersion compensator
06/10/2004US20040109445 Systems and methods for selectively diverting data from nodes
06/10/2004US20040109407 Path segment protecting p-cycles
06/10/2004US20040109229 Demultiplexer for optical time-division multiplexed signals
06/10/2004US20040109227 Optical fiber amplifier having automatic power control function and automatic power control method
06/10/2004US20040109224 Reflective dispersion-compensation optical amplifier
06/10/2004US20040109220 PMD compensator based on separation of principal state of poloarization control and differential group delay control, and method thereof
06/10/2004US20040109217 Atomic clock based on an opto-electronic oscillator
06/10/2004CA2506263A1 Transmitter in a digital return link for use in an hfc network
06/09/2004EP1427210A1 Terminal, data distribution system comprising such a terminal and method of re-transmitting digital data
06/09/2004EP1427158A1 Optical reception apparatus
06/09/2004EP1427125A2 Optical pulse separation method and device