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)
11/1999
11/16/1999US5987027 Cross-connect multirate/multicast SDH/SONET rearrangement procedure and cross-connect using same
11/16/1999US5986800 Optical amplification apparatus
11/16/1999US5986799 Optical amplifier having an attenuator for attenuating input power to eliminate a surge in an amplified optical signal
11/16/1999US5986790 Light source for optical communication, optical transceiver and optical communication network
11/16/1999US5986789 Optical transmission line and optical transmission system
11/16/1999US5986787 Near-infrared communication apparatus
11/16/1999US5986786 Passenger conveyance vehicles and systems utilizing the same
11/16/1999US5986785 Electronic apparatus with optical communication capability
11/16/1999US5986784 Adaptive polarization diversity detection scheme for coherent communications and interferometric fiber sensors
11/16/1999US5986783 Method and apparatus for operation, protection, and restoration of heterogeneous optical communication networks
11/16/1999US5986782 Signal-to-noise monitoring in WDM optical communication systems
11/16/1999CA2169746C Method for key distribution using quantum cryptography
11/16/1999CA2149088C Information sharing method for a plurality of nodes in communication system and communication system
11/16/1999CA2141041C Optical radiation devices
11/14/1999CA2237669A1 Optical frequency shifter and transmission system
11/11/1999WO1999057850A2 Sonet jo byte message monitoring system
11/11/1999WO1999057834A1 Real time wavelength monitoring circuit
11/11/1999WO1999057833A1 Automatic isolation in loops
11/11/1999WO1999057822A1 Dispersion managed optical waveguide and system with distributed amplification
11/11/1999WO1999057698A1 System and method for extending the range of a base unit
11/11/1999WO1999057594A1 Bidirectional optical module for multichannel utilization
11/11/1999WO1999049580A3 NONLINEAR FIBER AMPLIFIERS FOR 1430-1530mm RADIATION
11/11/1999WO1999041855A3 Optical transmission system with a receiver using full optical clock recovery
11/11/1999CA2330791A1 Real time wavelength monitoring circuit
11/11/1999CA2330768A1 Automatic isolation in loops
11/11/1999CA2330627A1 Dispersion managed optical waveguide and system with distributed amplification
11/11/1999CA2330474A1 Bidirectional module for multichannel use
11/11/1999CA2295700A1 Sonet jo byte message monitoring system
11/11/1999CA2271553A1 Level-flattening circuit for wdm optical signals
11/10/1999EP0955738A2 Polarization based differential receiver for reduction of background noise in free-space optical links
11/10/1999EP0954933A1 Compact optical crossbar switch
11/10/1999EP0954763A1 Photonic home area network fiber/power insertion apparatus
11/10/1999CN1234873A Optical apparatus which uses virtually imaged phased array to produce chromatic
11/10/1999CN1234660A Light transmission system and method for monitoring said same
11/09/1999US5983068 Photonic home area network
11/09/1999US5982972 Line card for optical network unit mechanical enclosure
11/09/1999US5982963 Tunable nonlinearly chirped grating
11/09/1999US5982854 Fiber optic based subscriber terminal
11/09/1999US5982530 Apparatus for driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line
11/09/1999US5982519 Infrared communications scheme
11/09/1999US5982518 Optical add-drop multiplexers compatible with very dense WDM optical communication systems
11/09/1999US5982517 Method and system for service restoration in optical fiber communication networks
11/09/1999US5982514 Optical-signal/electric-signal converting device
11/09/1999US5982323 Satellite navigation system
11/09/1999CA2154018C Digitally-tuned integrated laser with multi-frequency operation
11/04/1999WO1999056426A1 Wdm ring transmission system
11/04/1999WO1999056417A2 A device and method for wireless data transmission
11/04/1999WO1999056159A1 Segmented complex diffraction gratings
11/04/1999WO1999044298A3 Method and apparatus for improving spectral efficiency in wavelength division multiplexed transmission systems
11/04/1999WO1999041857A3 Optical telecommunications network
11/04/1999WO1999039464A3 A system and a method for information security in optical communication networks
11/04/1999CA2330127A1 A device and method for wireless data transmission
11/03/1999EP0954197A2 Optical transmission system including optical restoration
11/03/1999EP0954137A2 Event simulator for telecommunication networks and method for simulating the operation of such a network
11/03/1999EP0954128A2 Star type passive optical network
11/03/1999EP0954127A2 Method for optical signal transmission with chromatic dispersion compensation through chirped optical fibre gratings, and optical communication system using the method
11/03/1999EP0954126A1 Optical dispersion compensation
11/03/1999EP0954125A2 A method and apparatus for controlling optical signal power in response to faults in an optical fiber path
11/03/1999EP0954072A1 Cascaded raman resonator system and apparatus
11/03/1999EP0954071A1 Optical fiber amplifier and output power flattening method of optical fiber amplifier
11/03/1999EP0953866A1 Digital optical signal shaping device
11/03/1999EP0953854A1 Ring coupler for optical networks
11/03/1999CN1233892A Optical transmission system, and terminal and optical repeater
11/03/1999CN1233868A High efficiency bandwidth doubled and gain flattened silica fiber amplifier
11/02/1999US5978529 Gain equalizer and optical amplifying transmission line
11/02/1999US5978395 Light transmitting apparatus
11/02/1999US5978354 Optical transmission system and transmission line switching control method
11/02/1999US5978353 Multiplex terminal station apparatus
11/02/1999US5978239 Arrangement and method in a telecommunication system for optical voltage multiplicationing in an integrated circuit
11/02/1999US5978131 In-fiber two-stage amplifier providing WDM signal conditioning
11/02/1999US5978124 Light emitting control apparatus and optical transmitter
11/02/1999US5978123 Method for the transmission of a low-rate supplementary channel in high-rate coherent optical transmission systems
11/02/1999US5978122 Noise suppression method for wavelength division multiplexing transmission system
11/02/1999US5978121 Method and device for the optical transmission of data over distances in space
11/02/1999US5978119 System and method for synchronizing an optical source and a router in a wavelength division multiplexed fiber optic network
11/02/1999US5978118 Guided optical communication
11/02/1999US5978117 Dynamic reconfiguration of a wireless network using flexible wavelenght multiplexing
11/02/1999US5978116 Programmable wavelength router
11/02/1999US5978115 Span management system for wavelength division multiplexed network
11/02/1999US5978113 Apparatus for remote loopback testing and isolation of loss of signal failures within synchronous optical networks
11/02/1999CA2168851C System and method for quantum cryptography
11/02/1999CA2149928C Optical receiver with a high impedance preamplifier
11/02/1999CA2148154C Low power optical network unit
10/1999
10/30/1999CA2266058A1 Binary optical signal-forming device
10/30/1999CA2263640A1 Event simulator for telecommunication networks and method for simulating the operation of such a network
10/28/1999WO1999055038A1 Optical communications network
10/28/1999WO1999055024A1 N x M DIGITALLY PROGRAMMABLE OPTICAL ROUTING SWITCH
10/28/1999WO1999055023A1 Methods and apparatus for selective attenuation in an optical communication using electrochromic material
10/28/1999WO1999054765A1 Optical fiber, light-emitting module, and optical fiber amplifier
10/28/1999DE19918715A1 Optical data transmission subsystem
10/28/1999DE19917596A1 Bidirectional optical communication module
10/28/1999DE19818783A1 Optisches Netzwerk Optical network
10/28/1999DE19818699A1 Fast-acting compensation system minimizing signal distortion caused by polarization mode dispersion in optical fiber propagation
10/28/1999DE19816977A1 Fibre=optic transmission line transmission level monitoring circuit
10/28/1999CA2329717A1 Optical communications network
10/28/1999CA2270305A1 Method for optical signal transmission with chromatic dispersion compensation through chirped fibre gratings, and optical communication system using the method
10/28/1999CA2266289A1 A method and apparatus for controlling optical signal power in response to faults in an optical fiber path
10/27/1999EP0952694A2 Optical cross-connect restoration technique
10/27/1999EP0952690A2 System for determining of alignement data in optical communication links
10/27/1999EP0952689A2 Transmitter, receiver and distribution medium for an infrared communication system
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