Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › 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
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)
11/2000
11/15/2000CN1273755A Wavelength-selective optial switching apparatus optical communication apparatus using it and using method in optical communication apparatus
11/15/2000CN1273464A Overhead processing device based on 64 kbps data exchange
11/14/2000US6148127 Tunable dispersion compensator and optical system comprising same
11/14/2000US6148123 Method and apparatus for measuring optical distances
11/14/2000US6147796 Method for determining transmission parameters for the data channels of a WDM optical communication system
11/14/2000US6147788 Guiding filters for wavelength division multiplexing in soliton transmission
11/14/2000US6147787 Laser microphone
11/14/2000US6147786 Hybrid analog/digital WDM access network with mini-digital optical node
11/14/2000US6147785 Coherent crosstalk attenuation apparatus
11/14/2000US6147366 On chip CMOS optical element
11/14/2000CA2212465C Method for monitoring fiber optic cables
11/14/2000CA2205241C Asymmetric coupling method
11/09/2000WO2000067451A1 Communication system and its method, and communication device
11/09/2000WO2000067400A1 Intrinsic securing of fibre optic communication links
11/09/2000WO2000041351A3 Monitoring of signal wavelengths in optical fibre
11/09/2000WO2000041349A3 A method and coupling to change the wavelength of an optical transmitter in a system using wavelength division multiplexing
11/09/2000WO1998010544A3 Producing laser light of different wavelengths
11/09/2000DE19925408A1 Optical signals dispersion compensator for optical data transmission
11/09/2000DE19921091A1 Diffuser for optical mobile communication, has internal wall with material having high reflectivity and inlet/orifice for outlet which has reflected transmission signals in hollow ball/sphere
11/09/2000DE19917751A1 Verfahren und Überwachungsvorrichtung zur Überwachung der Qualität der Datenübertragung über analoge Leitungen Procedures and monitoring device for monitoring the quality of data transmission over analog lines
11/09/2000CA2371576A1 Intrinsic securing of fibre optic communication links
11/08/2000EP1051055A2 System and method for eliminating the capacity required for protection of an optical line system
11/08/2000EP1050982A1 Optical coupler and circuit employing an optical coupler
11/08/2000EP1050762A1 Method and device for the calibration of the deviation of a receiving beam in a terminal from its desired position, and use of the device
11/08/2000EP1050131A1 Short distance dense wavelength division multiplexing optical communication system
11/08/2000EP1050130A1 Communications system with star / ring topology
11/08/2000EP1050122A1 Method and system for restoring coincident line and facility failures
11/08/2000EP0791252A4 Wireless diffuse infrared lan system
11/08/2000CN2404752Y Radio remote control device for walking tractor
11/08/2000CN1272989A Communication using spread spectrum methods over optical fibers
11/07/2000US6144784 Optical input/output module and light-reflecting device
11/07/2000US6144783 Optical multiplexter/demultiplexer
11/07/2000US6144706 Distortion compensation circuit
11/07/2000US6144494 Virtually imaged phased array (VIPA) having spacer element and optical length adjusting element
11/07/2000US6144488 Optically amplifying device with gain equalizing function
11/07/2000US6144487 Optical amplifying apparatus capable of detecting at least one of optical individual signals
11/07/2000US6144485 Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
11/07/2000US6144474 Optical transmission system including optical repeaters with selectively enabled gain equalizers contained therein and including an add/drop apparatus with a plurality of individually selectable filters
11/07/2000US6144473 Method and apparatus for transceiving infrared signals
11/07/2000US6144472 Upgrading a power-splitting passive optical network using optical filtering
11/07/2000US6144471 Optical transmission system
11/07/2000US6144450 Apparatus and method for improving the accuracy of polarization mode dispersion measurements
11/07/2000US6144222 Programmable LED driver
11/07/2000US6142423 Ephemeris/attitude reference determination using on-board optics and other satellite ephemeris
11/07/2000CA2246806C An improved optical switching apparatus for use in the construction mode testing of fibers in an optical cable
11/07/2000CA2190970C Optical packet processing
11/06/2000CA2306114A1 System and method for eliminating the capacity required for protection of an optical line system
11/05/2000CA2303728A1 Method and device for calibrating the deviation of a received beam from its desired position in a terminal
11/02/2000WO2000065831A1 A/b switch apparatus for signal recovery in catv networks using a redundant link
11/02/2000WO2000065760A1 Technique to obtain channel plans for wdm systems with reduced four-wave mixing effect
11/02/2000WO2000065754A1 Dispersion compensation module
11/02/2000WO2000065753A2 Hfc return path system using digital conversion and transport
11/02/2000EP1049275A1 Dispersion compensation module
11/02/2000EP1049274A2 Optical repeater for wavelength division multiplexed signal light
11/02/2000EP1049273A2 Method and arrangement for controlling optical amplification in a wavelength division multiplex system
11/02/2000EP1049272A2 Signal quality monitoring system and method
11/02/2000EP1049169A1 Emitting-receiving optoelectronic device having a reduced crosstalk
11/02/2000EP1048139A1 Self-healing optical network
11/02/2000EP1048134A1 System and method for increasing the robustness of an optical ring network
11/02/2000EP1048133A1 System and method for sharing a spare channel among two or more optical ring networks
11/02/2000EP1047970A1 Diffractive vertical cavity surface emitting laser power monitor and system
11/02/2000EP0960349A4 Optical devices and methods
11/02/2000EP0753222B1 Optical telecommunications network
11/02/2000DE19919300A1 Arrangement for monitoring performance of D WDM multi-wavelength systems over single fiber has photodetector for continuous signal recording and processing and device for polarization manipulation
11/02/2000CA2371733A1 Dispersion compensation module
11/02/2000CA2371233A1 Technique to obtain channel plans for wdm systems with reduced four-wave mixing effect
11/02/2000CA2370855A1 Hfc return path system using digital conversion and transport
11/01/2000CN1272285A Input position measuring instrument and entertainment system
10/2000
10/31/2000US6141471 Optical transmission module and its manufacturing method
10/31/2000US6141468 Method of apparatus for remotely pumping a rare-earth doped optical fiber amplifier and a communication system employing same
10/31/2000US6141357 Method and apparatus for controlling mobile receivers
10/31/2000US6141141 Single sideband modulators
10/31/2000US6141132 Method of modulating a coherent light source with an electronic digital data stream
10/31/2000US6141131 Methods and apparatuses for high-speed control of lamp intensities and/or wavelengths and for high-speed optical data transmission
10/31/2000US6141130 Spectral equalizer for multiplexed channels
10/31/2000US6141129 Method and apparatus for all-optical data regeneration
10/31/2000US6141128 Buffered laser communication link
10/31/2000US6141127 High capacity chirped-pulse wavelength-division multiplexed communication method and apparatus
10/31/2000US6141125 Intra-node diagnostic signal
10/31/2000US6141090 Fiber optic cable having a specified path average dispersion
10/31/2000US6141089 Optical time domain reflectometer for measurements in optical networks with currently applied traffic signals
10/31/2000US6140920 Optical transmission system element test
10/31/2000US6140858 Predistortion circuit for an analog signal in a video communication network
10/31/2000CA2214651C Optical network
10/31/2000CA2200341C Optical data communication and location apparatus, system and method and transmitters and receivers for use therewith
10/31/2000CA2051625C Data transmission system
10/28/2000CA2306687A1 Opto-electronic transmitter-receiver with reduced video crosstalk
10/26/2000WO2000064196A1 Fiber-optic subscriber transmission system
10/26/2000WO2000064087A1 Increased capacity bidirectional dwdm network architecture with frequency stacking system
10/26/2000WO2000064079A1 A highly scalable modular optical amplifier based subsystem
10/26/2000WO2000064078A1 Method and apparatus for implementing an optical cross-connection
10/26/2000WO2000064077A1 Method and monitoring device for monitoring the quality of data transmission over analog lines
10/26/2000WO2000064076A2 Device for optically transmitting data in space
10/26/2000WO2000063834A2 Apparatus and method for handwriting capture
10/26/2000WO2000063732A1 Optical fiber and optical transmission line comprising the same
10/26/2000WO2000039629A3 Acousto-optical device
10/26/2000DE19914793A1 Verfahren und Anordnung zur Messung der Signalqualität in einem optischen Übertragungssystem Method and device for measuring the signal quality in an optical transmission system
10/26/2000CA2370768A1 Digital subscriber optical fiber transmission system
10/26/2000CA2370762A1 Increased capacity bidirectional dwdm network architecture with frequency stacking system
10/26/2000CA2370528A1 Optical fiber and optical transmission line comprising the same
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