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)
10/1999
10/27/1999EP0952464A2 Method of locating a submarine cable and signal-waveform therefor
10/27/1999EP0951765A1 Remodulators for wdm optical communication systems
10/27/1999EP0951764A2 Switchable wavelength router
10/27/1999EP0951761A1 Signal transmitter with automatic output control
10/27/1999EP0937346A4 Programmable wavelength router
10/27/1999EP0622004B1 Optical processing in asynchronous transfer mode network
10/27/1999CN1233116A Optical transmission apparatus, optical transmission system,and optical terminal station
10/27/1999CN1233115A Infrared signal receiver with attenuating circuit
10/26/1999US5974212 Optical line monitor and optical amplification apparatus using same
10/26/1999US5974209 System comprising an electroabsorption modulator and an optical discriminator
10/26/1999US5974208 Sliding-frequency guiding filter for soliton transmission
10/26/1999US5974207 Article comprising a wavelength-selective add-drop multiplexer
10/26/1999US5974074 Laser system for optical free
10/26/1999US5973838 Apparatus which includes a virtually imaged phased array (VIPA) in combination with a wavelength splitter to demultiplex wavelength division multiplexed (WDM) light
10/26/1999US5973821 Variable optical attenuator which applies a magnetic field to a faraday element to rotate the polarization of light signal
10/26/1999US5973820 FM modulation device
10/26/1999US5973816 Method and apparatus of driving an optical modulator to measure, and compensation for dispersion in an optical transmission line
10/26/1999US5973812 Optical transmitter and optical communication system
10/26/1999US5973811 Discrimination multi-channel infrared signal detector and systems utilizing the same
10/26/1999US5973810 Remote-controlled monitor/PC control circuit and control method thereof
10/26/1999US5973808 Comprising input optical fiber for receiving signal light, erbium-doped optical fiber for amplifying the received signal, wavelength division multiplexer, pumping soyrce, excited light input fiber, dielectric multilayer filter
10/26/1999US5973339 Semiconductor photodetector having an optical attenuator
10/26/1999US5973310 Optical acquisition and tracking system
10/21/1999WO1999053732A1 Dual-use electronic transceiver set for wireless data networks
10/21/1999WO1999053642A1 Optically modulated laser beam transceiver
10/21/1999WO1999053634A1 Networked photonic distribution system for sensing ambient conditions
10/21/1999WO1999053633A1 Analog and digital electronic tranceivers for dual-use wireless data networks
10/21/1999WO1999053632A1 Apparatus and method for transmitting and receiving a signal
10/21/1999WO1999053620A2 Optical-transmission system having a split-gain amplifier and a signal-modifying device
10/21/1999WO1999053363A2 Emulator and compensator for polarization mode dispersion
10/21/1999DE19816612A1 Monitor for testing performance of dense wavelength division multiplex multiple wavelength communication system
10/21/1999DE19816178A1 Emulator und Kompensator für Polarisationsmodendispersion Emulator and compensator for polarization mode dispersion
10/21/1999CA2327720A1 Analog and digital electronic tranceivers for dual-use wireless data networks
10/21/1999CA2327710A1 Dual-use electronic transceiver set for wireless data networks
10/21/1999CA2319044A1 Optical-transmission system having a split-gain amplifier and a signal-modifying device
10/21/1999CA2293792A1 Apparatus and method for transmitting and receiving a signal
10/20/1999EP0951196A2 Optical layer quasi-centralized restoration
10/20/1999EP0951112A2 Tunable laser source apparatus having wideband oscillation wavelength continuous sweep function
10/20/1999EP0950326A2 Wireless communications station and system
10/20/1999EP0950297A1 A bidirectional router and a method of monodirectional amplification
10/20/1999EP0950294A1 An optical transmitting and receiving system
10/20/1999EP0950293A1 Monitoring system using an optical side tone as a test signal
10/20/1999EP0950292A1 An optical receiver and a method of protecting such a receiver
10/20/1999EP0950291A1 Passenger conveyance vehicles and systems utilizing the same
10/20/1999CN1232192A 光学放大器 Optical amplifiers
10/20/1999CN1045854C Infrared two-direction speech transmission system
10/19/1999US5970201 Power regulation in optical networks
10/19/1999US5970191 Optical signal distributors
10/19/1999US5970185 Optical switches, modulators and transmitters
10/19/1999US5969866 Virtually imaged phased array (VIPA) having air between reflecting surfaces
10/19/1999US5969865 Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersion
10/19/1999US5969842 Method and apparatus for cordless infrared communication
10/19/1999US5969840 Optical element power control
10/19/1999US5969839 Optical communications device
10/19/1999US5969836 Method and apparatus for simultaneous transmission of digital telephony and analog video over a single optic fiber using wave division multiplexing
10/19/1999US5969835 Automated infrared test signal generator
10/19/1999US5969834 Method and apparatus for monitoring wavelength multiplexed optical signals
10/19/1999US5969833 Monitoring system using an optical side tone as a test signal
10/19/1999US5966987 Controlling device of tunable filter
10/16/1999CA2264338A1 Method for communication between earth stations using a satellite constellation
10/14/1999WO1999052232A1 Wdm bidirectional optical transmission system improving channel spacing with interleaving
10/14/1999WO1999052231A1 Optical communication system and method
10/14/1999WO1999052010A2 Optical computational system
10/14/1999WO1999043121A3 Communications link optical amplification and dispersion compensation
10/14/1999DE19815567A1 Monolithisch integriertes Laserarray Monolithically integrated laser array
10/14/1999DE19815491A1 Method of driving a light-emitting semiconducting diode
10/14/1999DE19815246A1 Method of transmitting high frequency signals, esp. optical signals
10/14/1999DE19814497A1 Verfahren und Vorrichtung zur Kompensation der Polarisationsmodendispersion in einer optischen Übertragungsstrecke Method and apparatus for compensating polarization mode dispersion in an optical transmission link
10/13/1999EP0949837A2 ATM Switch
10/13/1999EP0949776A2 Optical transmitter, multiple wavelength optical transmitter and optical transmission method
10/13/1999EP0949774A1 Subscriber optical communications system using bit-interleaved downlink channels
10/13/1999CN1231434A Low electricity consumption portable articles, especially wrist watch, including camera and radio data transimission device
10/13/1999CN1045663C Method of discriminating optical waveguides
10/12/1999US5966488 Optical module for connecting optical element and optical fiber
10/12/1999US5966484 Light branching and coupling device
10/12/1999US5966481 Optically pumped optical waveguide amplifier
10/12/1999US5966480 Article comprising an improved cascaded optical fiber Raman device
10/12/1999US5966476 Spatial switch using an optical beam steering device
10/12/1999US5966237 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
10/12/1999US5966236 Optical signal channel counter and optical amplification device using the same
10/12/1999US5966229 Free-space optical communications system with open loop transmitter control
10/12/1999US5966228 Optical transmission system and optical repeater
10/12/1999US5966225 Multi-channel optical transceiver
10/12/1999US5966206 Interlocked high power fiber system using OTDR
10/12/1999CA2165611C Device for in-line regeneration of a soliton transmitted signal by synchronously modulating the solitons using a nonlinear optical mirror
10/12/1999CA2145817C Device for the phase realignment of atm cells in optical atm nodes
10/10/1999CA2268754A1 Optical switch
10/07/1999WO1999050979A2 Optical fibre amplifier having a controlled gain
10/07/1999WO1999050978A2 Optical fiber amplifier having a gain flattening filter
10/07/1999WO1999050938A1 Improved performance gain flattened edfa
10/07/1999WO1999050844A1 Optical data storage system utilizing polarization maintaining optical fiber
10/07/1999WO1999050843A1 Optical data storage system with means for reducing noise from spurious reflections
10/07/1999WO1999050842A1 Low-birefringence optical fiber for use in an optical data storage system
10/07/1999WO1999050841A1 Low noise optical storage system based on an optical polarimetric delay line
10/07/1999WO1999037049A9 Self-healing optical network
10/07/1999DE19913631A1 Bi-directional optical communications component coupled to optical fiber
10/07/1999DE19815389A1 Data transmission device with optically screened transmission channel
10/07/1999CA2326224A1 Optical fibre amplifier having a controlled gain
10/07/1999CA2325730A1 Improved performance gain flattened edfa
10/06/1999EP0948153A2 Optical transmission apparatus, optical transmission system, and optical terminal station
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