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)
10/2002
10/10/2002US20020145796 Band-expanding method for optical amplifiers and optical transmission apparatus
10/10/2002US20020145795 Gain flattening with nonlinear sagnac amplifiers
10/10/2002US20020145794 Method and an apparatus for amplitude equalization of a plurality of optical signals
10/10/2002US20020145787 System and method for code divilsion multiplexed optical communication
10/10/2002US20020145782 Method and apparatus for transferring WDM signals between different wavelength division multiplexed optical communications systems in an optically transparent manner
10/10/2002US20020145780 Simultaneous delivery of 1280 video channels over a WDM passive optical network
10/10/2002US20020145779 Method and apparatus for interconnecting a plurality of optical transducers with a wavelength division multiplexed optical switch
10/10/2002US20020145778 Wavelength division multiplexed optical communication system having a reconfigurable optical switch and a tunable backup laser transmitter
10/10/2002US20020145777 Method for determining interactions between a number of optical channels in a wavelength division multiplexed signal
10/10/2002US20020145776 Wave length associative addressing system for WDM type light packet steering
10/10/2002US20020145729 Method and system for automatic optical fiber type identification
10/10/2002US20020145187 Package and a shield for an optical chip
10/10/2002DE10113303A1 Improving and homogenizing data transmission quality in wavelength multiplex system involves inhibiting signal level in at least one channel on detecting mutual non-linear influence
10/10/2002CA2442120A1 Survival dwdm system
10/10/2002CA2441943A1 Polarization mode dispersion compensation in optical transmission media
10/09/2002EP1248490A2 Optical switch and networking method
10/09/2002EP1248393A2 Method and apparatus for detecting localized polarisation dependent anomalies on optical transmission lines
10/09/2002EP1248392A2 Optical amplifier device and bidirectional wavelength division multiplexing optical communication system using the same
10/09/2002EP1248391A1 Bi-directional amplifier
10/09/2002EP1248390A1 Optical power equalization using a gain clamped semiconductor optical amplifier
10/09/2002EP1248336A2 Method and apparatus for wavelength conversion
10/09/2002EP1248333A1 Wavelenght stabilised optical source
10/09/2002EP1248331A1 L-band optical fiber amplifier
10/09/2002EP1247400A1 System and method for transmitting data on return path of a cable television system
10/09/2002EP1247358A1 Communications system with digital return path
10/09/2002EP1247357A1 Pulsed frequency modulation for analog optical communication
10/09/2002EP1247356A2 System and method for measuring in-band cross-talk in optical communication systems
10/09/2002EP1247355A2 System and method for detecting imperfect connections in optical systems
10/09/2002EP1151559B1 Reduction of the distortion of optical impulses through polarisation mode dispersion in optical transmission systems
10/09/2002EP1104602B1 Optical subscriber access network
10/09/2002CN2515879Y Multiple-route light signal exchange and switchover system
10/09/2002CN2515878Y Optical transmitter-receiver
10/09/2002CN2515877Y 光功率监控器 Optical power monitor
10/09/2002CN2515698Y Centrifugal hole torsional type adjustable optical fibre attenuator
10/09/2002CN1373961A Infrared to ratio frequency adapter and method for using same
10/09/2002CN1373569A Compensation of dispersion in optical fibre transmission system and compensation optical fibre
10/09/2002CN1373381A Bidirectional light amplifier module
10/09/2002CN1373380A Switch array based on arc waveguide all-optical switch
10/09/2002CN1373374A Dispersion compensation fibre for compensating NZ-DSF fibre with positive dispersion
10/09/2002CN1373350A Method for improving wavelength resolution of optical performance monitor
10/08/2002US6463191 Optical switching device and optical switching method
10/08/2002US6462877 Drop filter apparatus and method
10/08/2002US6462862 Optical fiber amplifier and dispersion compensating fiber module for optical fiber amplifier
10/08/2002US6462861 Optical amplifying apparatus and optical communication system
10/08/2002US6462860 Method and apparatus of detection of pulse position modulated optical signals
10/08/2002US6462851 Network and method for transmitting reverse analog signals by sub-sampling the digital reverse bandwidth
10/08/2002US6462850 Apparatus and method to overcome dispersion limitations in high speed communications systems and networks
10/08/2002US6462849 Optimizing launch points for dispersion-managed solitons
10/08/2002US6462847 Method and apparatus for free-space optical communication without electro-optical conversion
10/08/2002US6462846 Shared telescope optical communication terminal
10/08/2002US6462845 Optical communication device
10/08/2002US6462844 Wavelength-division multiplexing transmission system, a method for designing a loss difference compensator for optical devices used in the wavelength-division multiplexing transmission system, and a method for configuring the wavelength-division multiplexing transmission system
10/08/2002US6462592 Clock signal converting apparatus of a transmission system
10/08/2002US6462435 Cable detect and EMI reduction apparatus and method
10/08/2002US6462325 Circuit for detecting the shutoff of an optical output
10/04/2002CA2378105A1 Methods and system for automatic optical fiber type identification
10/03/2002WO2002078279A1 Multiplexer
10/03/2002WO2002078218A1 Optical communication method and optical communication device
10/03/2002WO2002078135A2 Optical filter device for temperature dependence control
10/03/2002WO2002077690A1 Method and apparatus for fiber optic modules
10/03/2002WO2002077573A2 Transceiver device for cooperation with an optical fiber
10/03/2002WO2002077572A2 Sensor for a receiving device for cooperation with an optical fiber
10/03/2002WO2002061959A3 Open-path laser/optical communication systems and methods utilizing wavelengths between atmospheric and gaseous absorption lines
10/03/2002WO2002060074A3 Laser communication system
10/03/2002WO2002030015A3 A wdm communication system utilizing wdm optical sources with wavelengths and light intensity, and method for stabilization thereof
10/03/2002WO2002029943A3 Wide bandwidth fiber raman amplifier
10/03/2002WO2002021735A3 Pump power monitor system and method for gain control of optical amplifier
10/03/2002WO2002019575A3 Method and apparatus for determining a fiber plant gain transfer function to control distributed gain
10/03/2002WO2002001764A3 Dispersion compensating device
10/03/2002WO2001071951A3 Method and system for non-soliton transmission of short pulse signals via an optical fiber
10/03/2002WO2001064010A3 Optical amplifier and optical transmission system
10/03/2002WO2001026263A9 Through-timing of data transmitted across an optical communications system utilizing frequency division multiplexing
10/03/2002US20020141715 High-dispersion fibers for high-speed transmission
10/03/2002US20020141695 Method and apparatus for a dynamic gain equalizer for an erbium doped fiber amplifier
10/03/2002US20020141694 Methods of achieving optimal communications performance
10/03/2002US20020141692 Optical network with dynamic balancing
10/03/2002US20020141683 Subtracting analog noise from an optical communication channel using stable, Non-Absorbing optical hard limiters
10/03/2002US20020141680 System and method for measurement of PMD over wavelength
10/03/2002US20020141466 Controlling the extinction ratio of optical transmitters
10/03/2002US20020141048 Two fiber support with single optical amplifier
10/03/2002US20020141047 System and method for per-band optical amplification
10/03/2002US20020141046 Optical amplifier device and bidirectional wavelength division multiplexing optical communication system using the same
10/03/2002US20020141045 Optical fiber amplifier
10/03/2002US20020141044 Optical amplifier and monitoring method of optical amplifier
10/03/2002US20020141043 Gain saturation tuning in optical amplifiers
10/03/2002US20020141042 Optical amplification apparatus
10/03/2002US20020141041 Non-linearity compensation in optical devices and transmission systems
10/03/2002US20020141022 Fiber optic receiver with an adjustable response preamplifier
10/03/2002US20020141020 Optical network employing erbium-doped fiber amplifiers
10/03/2002US20020141016 Optical communications apparatus and optical communications system
10/03/2002US20020141012 Double filtering fiber optic soliton signal transmission system
10/03/2002US20020141011 Optical free space signalling system
10/03/2002US20020141010 Coupled data and wavelength reference for optical performance monitoring in fiber optic systems
10/03/2002US20020141009 Performance monitoring for multi-port optical devices and systems
10/03/2002US20020141008 Method and system for reducing degradation of optical signal to noise ratio
10/03/2002US20020140947 Wavelength stabilised optical source
10/03/2002US20020139998 Voltage offset diode
10/03/2002US20020139932 Method and system for binary signaling via quantum non-locality
10/03/2002US20020139924 Optical sampling waveform measuring apparatus aiming at achieving wider band
10/02/2002EP1246380A2 Optical fibre dispersion compensating device
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