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)
03/1998
03/17/1998US5729695 Method and device for acknowledgement of transmitted information
03/17/1998US5729388 System employing dissipative pseudorandum dynamics for communications and measurement
03/17/1998US5729373 Reproducing circuit of monitor signal
03/17/1998US5729372 Optical transmission method and apparatus and optical amplification method and apparatus for optical communication system
03/17/1998US5729371 Optical communications device
03/17/1998US5729370 Method for upgrading a communications network
03/17/1998US5729369 Method of tracking a plurality of discrete wavelengths of a multifrequency optical signal for use in a passive optical network telecommunications system
03/17/1998US5729368 Method of providing non-intrusive optical test access without optical loss
03/17/1998US5729211 Assembly for transferring data
03/17/1998US5729210 Remote operating system
03/12/1998WO1998010600A1 Apparatus and method for distributing wireless communications signals to remote cellular antennas
03/12/1998WO1998010560A1 Quantum cryptography device and method
03/12/1998WO1998010544A2 Producing laser light of different wavelengths
03/11/1998EP0828401A2 Circuit for digital data transfer
03/11/1998EP0828395A2 Fiber optic operations center
03/11/1998EP0828391A2 Optical transmission device for analogue electrical signals and digital transmission system
03/11/1998EP0828359A2 Receiver for optical burst signal and receiving method therefor
03/11/1998EP0828358A2 Transmission device and optical transmission method of electrical frequency division multiplexed signals
03/11/1998EP0828357A2 Optical element power control
03/11/1998EP0828356A2 Optical monitoring and test access interconnection module
03/11/1998EP0828174A2 Optical wavelength converter device and optical pulse phase detecting circuit
03/11/1998EP0827650A1 Optical communication systems minimizing dispersion
03/11/1998EP0827649A1 Predistortion circuit for an analog signal in a video communication network
03/11/1998EP0827648A1 Arrangements relating to light emitting devices
03/11/1998EP0827640A1 Laser transmitting or receiving devices and method, for optically transmitting information
03/11/1998CN1175863A Radio selective calling receiver
03/11/1998CN1037735C Optical fibre amplifier with dual rasters
03/10/1998US5727104 Optical transmission module and a method of producing the same
03/10/1998US5726789 Method and device for modulating optical short pulses
03/10/1998US5726788 Dynamically reconfigurable optical interface device using an optically switched backplane
03/10/1998US5726787 Apparatus and method for improving signal-to-noise ratio in wavelength division multiplexing soliton transmission systems
03/10/1998US5726786 Free-space star-coupled optical data bus
03/10/1998US5726784 WDM optical communication system with remodulators and diverse optical transmitters
03/10/1998US5726783 Optical fibre communication system
03/10/1998CA2214946A1 Receiver for optical burst signal and receiving method therefor
03/05/1998WO1998009407A1 Method for optimising a mostly optical network
03/05/1998WO1998009396A1 Switchable wavelength add/drop component
03/05/1998WO1998009392A2 System and method of using optical fibers in a data storage and retrieval system
03/05/1998WO1998009289A1 Optical head using micro-machined elements
03/05/1998WO1998009288A1 Offset optics for use with optical heads
03/05/1998WO1998009287A1 Data storage system having an optical flying head
03/05/1998WO1998009286A1 Optical system and method using optical fibers for storage and retrieval of information
03/05/1998WO1998009285A1 Magneto-optical data storage system with high capacity
03/05/1998WO1998009284A1 Flying optical head with dynamic mirror
03/05/1998WO1998009280A1 Single-frequency laser source for optical data storage system
03/05/1998WO1998009279A1 Data storage system having an improved surface micro-machined mirror
03/05/1998DE19635445A1 Wireless data communication apparatus for ATM network
03/05/1998CA2264027A1 Method for optimising a mostly optical network
03/05/1998CA2231642A1 Switchable wavelength add/drop component
03/05/1998CA2215005A1 Circuit arrangement for digital telecommunications
03/05/1998CA2213866A1 Transmitter and method for optically transmitting electric frequency-division multiplex signals
03/04/1998EP0827357A2 Cross-connect network node
03/04/1998EP0827297A2 Method of asymmetric attenuation of upstream and downstream signals
03/04/1998EP0826276A1 Multimode communications systems
03/04/1998EP0826271A1 Method and apparatus for transmitting signals in an optical fibre
03/04/1998EP0583331B1 Optoelectronic component
03/04/1998CN1175334A Node in optical TDM network
03/04/1998CN1175104A Erbium-doped optical fibre amplifier using bidirectional reticule and exciting pump-excited power amplifying and transmitting light
03/03/1998US5724459 Optical modulation device and fiber optic communication system
03/03/1998US5724178 Amplitude modulation circuit having an electro-absorption modulator
03/03/1998US5724170 Automatic power control circuit
03/03/1998US5724169 Phase-modulated fiber optic communication link with carrier signal filtering
03/03/1998US5724168 Wireless diffuse infrared LAN system
03/03/1998US5724166 Information sharing method for a plurality of nodes in communication system and communication system
03/03/1998US5724165 Fault-tolerant optical routing switch
03/03/1998US5724164 Continuously tunable laser
03/03/1998US5724149 Optical communication link fault signalling
03/03/1998US5723943 Apparatus for generating light
02/1998
02/26/1998WO1998008330A1 Overcoming shot noise in apd receivers for manchester encoded signals
02/26/1998WO1998008322A1 Improvements in or relating to optical add/drop wavelength division multiplex systems
02/26/1998WO1998008317A1 Circuit arrangement for the operation of wavelength division multiplexing
02/26/1998WO1998008316A1 Method and system for efficient optical transmission of ntsc video
02/26/1998WO1998008307A1 Digital optical receiver with instantaneous josephson clock recovery circuit
02/26/1998WO1998008138A1 Optical fiber communication system using optical phase conjugate, apparatus applicable to the system and its manufacturing method
02/26/1998WO1998008121A1 Optical dispersion compensation
02/26/1998WO1998008120A1 Fabricating optical waveguide gratings
02/26/1998CA2261945A1 Method and system for efficient optical transmission of ntsc video
02/26/1998CA2231628A1 Improvements in or relating to optical add/drop wavelength division multiplex systems
02/25/1998EP0825733A2 Method of generating duobinary signal and optical transmitter using the same method
02/25/1998EP0825570A1 Radio selective calling receiver
02/25/1998EP0824804A1 Optical signal transmitter, system and method of transmission
02/25/1998EP0824803A1 Branching unit for an optical fibre transmission system
02/25/1998EP0617852B1 Apparatus and method for controlling an extinction ratio of a laser diode over temperature
02/24/1998USRE35736 Distributed antenna system
02/24/1998US5721796 Optical fiber cross connect with active routing for wavelength multiplexing and demultiplexing
02/24/1998US5721794 Optical switch
02/24/1998US5721637 Wavelength converter apparatus
02/24/1998US5721635 Optical fiber amplifier and optical amplifier repeater
02/24/1998US5721456 Optical transmitter
02/20/1998CA2213149A1 Dispersion compensating optical fiber
02/18/1998EP0563073B1 Optical mixing device
02/18/1998CN2274846Y Solar micro-power non-functional optic fiber sensor
02/18/1998CN2274845Y Universal infrared remote controlling switch
02/17/1998US5719697 Method and apparatus for combining add/drop optical signal lines from a plurality of branching units
02/17/1998US5719696 High capacity optical fiber network
02/17/1998US5719693 Power feeding system for an optical transmission system
02/17/1998US5719622 Visual control selection of remote mechanisms
02/17/1998CA2067487C Optical receiver
02/15/1998CA2213047A1 Radio selective calling receiver
02/12/1998WO1998006192A1 Spectral equalizer using reconfigurable holographic filter
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