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)
04/2002
04/03/2002CN1343012A Weak-light semiconductor switch with sub-band transition of super-lattice material
04/03/2002CN1082190C Optical fiber protection back plate
04/02/2002USRE37621 Optical communication transmission system
04/02/2002US6366875 Event simulator for telecommunication networks and method for simulating the operation of such a network
04/02/2002US6366729 Limitation of oscillation caused by Raman amplification due to the use of different fibers
04/02/2002US6366728 Composite optical fiber transmission line method
04/02/2002US6366724 Integrated optical transmitter and receiver module
04/02/2002US6366723 Wireless optical communications without electronics
04/02/2002US6366718 Submarine optical gain equalizer, submarine optical transmission line and its installation method
04/02/2002US6366717 Apparatus for distributing optical fiber transmission paths
04/02/2002US6366712 Apparatus and method for combining two separate RF signals on a single optical fiber with monitoring and alarm capabilities
04/02/2002US6366585 Distributed control in a communication system
04/02/2002US6366394 Gain-locked dual stage optical amplifier
04/02/2002US6366393 Fast gain control for optical amplifiers
04/02/2002US6366390 Pulse interleaver
04/02/2002US6366382 Optical decision circuit and use thereof
04/02/2002US6366381 Remote monitoring of an optical transmission system using line monitoring signals
04/02/2002US6366380 Optical transceiver EMI detuning device
04/02/2002US6366379 Remote control device of acousto-optic tunable filter and optical transmission system containing equalizer using acousto-optic tunable filter and optical transmission system containing optical add/drop multiplexer using acousto-optic tunable filter
04/02/2002US6366377 Optical network and switch control method for use in the optical network
04/02/2002US6366376 Optical transmitting device using wavelength division multiplexing to transmit signal lights having frequencies arranged to eliminate effects of four-wave mixing (FWM)
04/02/2002US6366375 Optical-signal transmission apparatus and method, and signal processing apparatus
04/02/2002US6366374 AC performance monitor with no clock recovery
04/02/2002US6366373 Method of intrinsic continuous management data transmission in fiber optic communications
04/02/2002US6366372 Burst mode wavelength manager
04/02/2002US6366348 Optical fiber distortion measuring apparatus and optical fiber distortion measuring method
04/02/2002US6366334 Method and apparatus for removing removal part in liquid crystal display device using jet of compressed air to remove part of the substrate
04/02/2002US6365891 Optical sensor array having multiple rungs between distribution and return buses and having amplifiers in the buses to equalize return signals
04/02/2002US6364541 Method and apparatus for optical reception
04/02/2002CA2255386C Temperature compensated insensitive optical multiplexor/demultiplexor
04/02/2002CA2231819C Bi-directional optical transmission system
04/02/2002CA2229349C Multi-hop telecommunications systems
04/02/2002CA2220603C Optical data transmitting device
04/02/2002CA2165403C Network system for communication with plural channels, node device and concentrator for use therein, and communication method for said network system
03/2002
03/28/2002WO2002025882A1 Quadrature processed lidar system
03/28/2002WO2002025850A1 Add-drop filter, packet switch, wavelength multiplexing device, communication device, and communication network
03/28/2002WO2002025845A2 Tunable optical dispersion by using two fiber bragg gratings with nonlinear group delays
03/28/2002WO2002025844A1 Method and system for transmitting a signal via a non-linear transmission unit
03/28/2002WO2002025843A1 Method and system for transmitting a signal via a non-linear transmission unit
03/28/2002WO2002025842A2 Universal lighting network method and system
03/28/2002WO2002025841A2 Point to multipoint communication system with optical signal transmission
03/28/2002WO2002025840A1 Long line fiber optic communication system without repeaters or with widely spaced repeaters and with inexpensive amplifiers
03/28/2002WO2002025361A1 Method of differentially connecting photonic devices
03/28/2002WO2002025352A2 Optical switching element having movable optically transmissive microstructure
03/28/2002WO2002015416A3 High-speed communications system
03/28/2002WO2001067141B1 Fiber amplifier with fast transient response and constant gain
03/28/2002WO2001061385A3 Compensating polarization mode dispersion in fiber optic transmission systems
03/28/2002US20020037148 Optical devices employing an optical thresholder
03/28/2002US20020037131 Method for gain equalization, and device and system for use in carrying out the method
03/28/2002US20020037126 Passive polarization stabilizer
03/28/2002US20020037033 Serialised test of parallel optical module
03/28/2002US20020037020 WDM optical transmission apparatus
03/28/2002US20020036814 High-speed communications system
03/28/2002US20020036812 Method and system for transmitting signals with spectrally enriched optical pulses
03/28/2002US20020036811 PMD characterization across multiple optical channels of an optical link
03/28/2002US20020036810 Signal break detecting circuit
03/28/2002US20020036767 Method for monitoring an optical waveguide, as well as monitoring system and monitoring unit for said method
03/28/2002US20020036630 Light-emitting diode driving circuit and optical transmission module using the same
03/28/2002DE10046664A1 Verfahren und Vorrichtung zur störsicheren Übertragung von Daten in einem Bus Method and apparatus for interference-free transmission of data in a bus
03/28/2002CA2422465A1 Tunable optical dispersion by using two fiber bragg gratings with nonlinear group delays
03/27/2002EP1191731A2 Method and apparatus for interference-resistant data transmission on a bus
03/27/2002EP1191728A2 Method for compensating channel quality differences in a WDM system
03/27/2002EP1191726A1 A method of transmitting data symbols in a digital teletransmission network; a digital teletransmission network and network elements therefor
03/27/2002EP1191718A2 Method and device for improving the quality of a modulated optical transmission signal
03/27/2002EP1191717A2 Method and device for wavelength stabilisation of optical WDM signals
03/27/2002EP1191716A2 Method for phase synchronously supplying an optical pulse signal with an electrical data signal
03/27/2002EP1191715A2 Optical wireless network with direct optical beam pointing
03/27/2002EP1191714A1 Method for monitoring an optical waveguide, monitoring system and monitoring unit for said method
03/27/2002EP1191382A2 Stacked micromirror structures
03/27/2002EP1191369A2 Optical fiber, and dispersion compensator using same, optical transmission line using same and optical transmission system using same
03/27/2002EP1190612A1 Method and device for transmitting data between pick-and-place robots and a feeding unit, pick-and-place robot and feeding unit
03/27/2002EP1190509A1 Method and apparatus of utilizing rf/microwave mixing techniques to select a given band of an optical transmission
03/27/2002EP1190406A2 Method and system for programming a universal remote controller
03/27/2002EP0732005B1 Direct entry remote control with channel scan
03/27/2002CN2483898Y Wall type indoor optical-fibre distributing cabinet
03/27/2002CN1342003A Bit rate detecting circuit and calculating method for optical network
03/27/2002CN1341998A Carrier detecting circuit and infrared remote controlled receiver
03/27/2002CN1081858C Optical commuunication system and control method thereof
03/27/2002CN1081857C Apparatus for detecting light signal
03/26/2002US6363202 Management and control of the power levels of wavelength multiplexed optical signals
03/26/2002US6363195 Multimode fiber link dispersion compensator
03/26/2002US6363194 Optical fiber communication system employing Nd doped fiber amplifier for the 1400 nm window
03/26/2002US6363187 Chromatic dispersion compensation
03/26/2002US6363184 Method and apparatus for chromatic dispersion compensation and dispersion slope compensation in wavelength division multiplexed systems utilizing a channel separator and virtually imaged phased arrays
03/26/2002US6363181 Method and apparatus for wavelength-division multiplexing
03/26/2002US6362911 Burst mode optical receiver using two amplifiers having different bandwidth
03/26/2002US6362910 Optical transmitter having temperature compensating function and optical transmission system
03/26/2002US6362909 Line powering shelf for data transmission line
03/26/2002US6362908 Multi-service adaptable optical network unit
03/26/2002US6362907 Apparatus and method for transmitting data between VLSI chips
03/26/2002US6362905 Optical crossconnect apparatus and optical transmission system
03/26/2002US6362903 Use of higher order modulation techniques to transmit information on passbands of a dispersion-limited fiber link
03/26/2002US6362874 Polarization mode dispersion measurement using phase-sensitive sideband detection
03/26/2002CA2353155A1 Fiber grating circuit and a method of measuring grating dispersion
03/26/2002CA2257805C Fault-tolerant optical routing switch
03/26/2002CA2235480C Photo signal amplification transmission system
03/26/2002CA2228227C Dynamic gain control system for optical amplifier and method thereof
03/26/2002CA2068975C Optical amplification system
03/22/2002CA2357193A1 Seralised test of parallel optical module
03/21/2002WO2002023800A1 Phase modulator and phase modulating method