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)
12/2001
12/12/2001EP1161780A2 Optical transmission systems including signal varying devices and methods
12/12/2001CN2465407Y Bus based optical division inserting multiplexer
12/12/2001CN2465406Y Light guiding structure for infrared ray data transmitter
12/12/2001CN1326558A Tunable optical add/drop multiplexer
12/11/2001US6330482 Communications, information, maintenance diagnostic and training system
12/11/2001US6330383 Disperson compensation by using tunable nonlinearly-chirped gratings
12/11/2001US6330381 Methods, systems, media and signals for determining optimum pre-compensation and optimization of an optical system
12/11/2001US6330377 Optical transmitting/receiving method and apparatus
12/11/2001US6330375 Distortion analyzer for compensation apparatus of first order polarization mode dispersion (PMD)
12/11/2001US6330241 Multi-point to point communication system with remote unit burst identification
12/11/2001US6330237 Time slot assignment circuit
12/11/2001US6330098 Apparatus for externally modulating two optical channels at the same time
12/11/2001US6330093 Connector interface for spacecraft modules
12/11/2001US6330092 Polarization based differential receiver for reduction of background in free-space optical links
12/11/2001US6330089 Optical time-division multiplexing transmitter module
12/11/2001US6329881 Preamplifier
12/11/2001US6328480 Connectors for providing fibre optic connection to Ethernet devices having twisted-pair connections
12/06/2001WO2001093498A2 Multiple access system for communications network
12/06/2001WO2001093489A1 Redundant optical multiple-branch communication system
12/06/2001WO2001093480A1 Arrangement and method relating to switched telecommunications
12/06/2001WO2001093466A2 Optical transmission system with control of the chromatic dispersion
12/06/2001WO2001093465A1 Tapped delay line diffractive array for sensing polarization mode dispersion
12/06/2001WO2001093464A2 Device and method for monitoring signal direction in an optical communications network
12/06/2001WO2001092934A1 Technique for detecting the status of wdm optical signals
12/06/2001WO2001092930A1 Optical fibre comprising a bragg grating and tunability means
12/06/2001WO2001040733A3 System for and method of searching for targets in a marine environment
12/06/2001WO2001027674A3 Optical monitoring device
12/06/2001WO2001025828A3 Dispersion compensating fiber
12/06/2001US20010048798 Choromatic dispersion compensating module and optical transmission system using the same
12/06/2001US20010048793 Method and apparatus for multiboard fiber optic modules and fiber optic module arrays
12/06/2001US20010048788 Tunable optical dispersion-slope compensation based on a nonlinearly-chirped bragg grating
12/06/2001US20010048787 Optical signal generator for high speed multi-fiber optical switching
12/06/2001US20010048547 Amplification of an optical WDM signal
12/06/2001US20010048546 Optical fiber transmission system with chromatic dispersion compensation
12/06/2001US20010048545 Optical amplifier and optical amplification method
12/06/2001US20010048541 Delay equalizer, optical transmitter using same delay equalizer, and optical transmission system
12/06/2001US20010048540 Optical transmitting device
12/06/2001US20010048539 Optical transmission system
12/06/2001US20010048537 Device and method for monitoring signal direction in an optical communications network
12/06/2001US20010048343 S+ band nonlinear polarization amplifiers
12/06/2001US20010048067 Signal input cutoff detector, photo receiver and signal input cutoff detecting method
12/06/2001DE10037745A1 Optical signal transmission method, uses damping of Stokes frequencies by filter inserted in transmission path for allowing higher transmission power
12/06/2001DE10027318A1 Mehrstufiger optischer Demultiplexer und mehrstufiger optischer Multiplexer A multi-stage and multi-stage optical demultiplexer optical multiplexer
12/06/2001CA2410958A1 Multiple access system for communications network
12/06/2001CA2410936A1 Optical transmission system with control of the chromatic dispersion
12/06/2001CA2410897A1 Device and method for monitoring signal direction in an optical communications network
12/06/2001CA2410482A1 Technique for detecting the status of wdm optical signals
12/05/2001EP1161117A2 Photonic network node
12/05/2001EP1161015A2 Optical transmission system, its method, and optical amplification transmission line
12/05/2001EP1161009A1 Optical communication system
12/05/2001EP1161008A2 High power, multiple-tap co-doped optical amplifier
12/05/2001EP1161007A2 System and method for optical heterodyne detection of an optical signal
12/05/2001EP1161006A2 Optoelectronic communication system in turbulent medium having array of photodetectors and time compensation
12/05/2001EP0908048A4 Echo canceller system
12/05/2001EP0776553A4 An infrared communication device for multistandard operations
12/05/2001EP0744102B1 Method and device for driving a radiation emitting device
12/05/2001CN1325579A Data communiation network utilizing telephone lines and data transceiver suitable for the same
12/05/2001CN1325571A Optical remote control interface system and method
12/05/2001CN1325203A Radiation power balancer
12/05/2001CN1325192A Self-healing bit-rate converter in light tranmission system
12/05/2001CN1075913C Method for TDMA management, central station, terminal station and network system to perform this method
12/04/2001US6327412 Optical fiber, light-emitting module, and optical fiber amplifier
12/04/2001US6327400 Protection scheme for single fiber bidirectional passive optical point-to-multipoint network architectures
12/04/2001US6327399 Optical devices employing an optical thresholder
12/04/2001US6327250 Method and apparatus for supressing crosstalk between data and monitoring channel in an optical communication system
12/04/2001US6327141 Portable computer for infrared data communication
12/04/2001US6327076 Optical amplifier equipment for WDM optical communication
12/04/2001US6327075 Optical gain equalization unit, optical gain equalization method, and optical fiber transmission line
12/04/2001US6327064 Frequency stabilized and crosstalk-free signal sources for optical communication systems
12/04/2001US6327063 Reconfigurable laser communications terminal
12/04/2001US6327062 Optical communication system
12/04/2001US6327061 Optical fiber transmission system for soliton signals with wavelength multiplexing and saturable absorbers
12/04/2001US6327060 Optical transmission system, optically branching apparatus and optical signal processing apparatus
12/04/2001US6326600 Method and apparatus for distortion reduction in optoelectronic interconnections
12/01/2001CA2349399A1 Multimedia optical community area network
11/2001
11/29/2001WO2001091342A2 Method and system for polarization control and polarization mode dispersion compensation for wideband optical signals
11/29/2001WO2001091340A1 Wdm transmission system
11/29/2001WO2001091339A2 Optical transmission systems and methods including optical protection
11/29/2001WO2001091311A2 Spintronic optical device
11/29/2001WO2001090790A1 Method and system for compensating for chromatic dispersion
11/29/2001WO2001090784A2 Tunable chromatic dispersion and dispersion slope compensator utilizing a virtually imaged phased array
11/29/2001WO2001031607A9 Contiguously mountable sensor unit
11/29/2001US20010046348 Multi-wavelength/multi-channel system
11/29/2001US20010046347 Optical connection and connection unit for the exchange of data between devices
11/29/2001US20010046344 Optical signal switching apparatus
11/29/2001US20010046268 Transceiver channel bank with reduced connector density
11/29/2001US20010046084 Multi-wavelength light amplifier
11/29/2001US20010046083 Raman amplifier, optical repeater, and raman amplification method
11/29/2001US20010046077 Optical receiving station, optical communication system, and dispersion controlling method
11/29/2001US20010046076 Self-adjusting bit rate transducer in optical transmission system
11/29/2001US20010046075 Optical coupler monitoring system
11/29/2001US20010046074 Protection switching apparatus for 1 + 1 optical transmission lines
11/29/2001US20010046073 Beam shaping element for use in a lithographic system
11/29/2001US20010045898 Interactive remote control toy
11/29/2001DE10025158A1 Infrared transmission/reception unit used for acquiring goods information in supermarket, is switched to transmit high frequency modulated IR signal and low frequency modulated IR signal through same path
11/29/2001DE10024393A1 Verfahren zur Regelung des Signal-Rausch-Abstandes von optischen Add/Drop-Signalen Method for controlling the signal-to-noise ratio of the optical add / drop signals
11/29/2001DE10023861A1 Signal coupling-decoupling device of optical bus system, has electro-optical transmitter arranged near specified electro-optical splitter, so that input-output of signal in input-output connection areas is made uniform
11/29/2001CA2410479A1 Optical transmission systems and methods including optical protection
11/28/2001EP1158831A2 Interconnection between telecommunication MS-SPRING and SNCP ring networks
11/28/2001EP1158713A2 Optical waveform for use in a DWDM optical network and systems for generating and processing same