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)
06/2003
06/04/2003CN1422470A Optical add/drop multiplexer apparatus, method of controlling the same and optical communication system
06/04/2003CN1422469A Methods and apparatus for preventing deadbands in an optical communication system
06/04/2003CN1422465A Wavelength division multiplex (WDM) singnal monitor
06/04/2003CN1422030A Cascade odd-even signal separator
06/04/2003CN1422029A Wavelength division multiplexing all-band light transmission equipment
06/04/2003CN1422028A 光放大器 Optical amplifiers
06/04/2003CN1422027A High-density wavelength division multiplexer
06/04/2003CN1422026A Optical multiplexer
06/04/2003CN1422014A Multi-wavelength light network system based on single-fiber connection node
06/04/2003CN1422013A Automatic protecting switch controller for optical self-healing ring and its control method
06/04/2003CN1421716A Passive optical device
06/04/2003CN1110737C Transmitting method and equipment for key operation information and transmitting/receiving system
06/03/2003US6574482 Dual RF/IR communication device and method of use thereof
06/03/2003US6574413 Arrangement and method for the channel-dependent attenuation of the levels of a plurality of optical data channels
06/03/2003US6574407 Chromatic dispersion compensation in an optical fiber transmission system, and a compensation fiber
06/03/2003US6574405 Optical fiber and optical transmission line using this optical fiber
06/03/2003US6574404 Choromatic dispersion compensating module and optical transmission system using the same
06/03/2003US6574394 Optical fibre grating and optical fiber transmission system using such optical fiber grating
06/03/2003US6574389 Optical communication with pre-compensation for odd order distortion in modulation and transmission
06/03/2003US6574259 Method of making an opto-electronic laser with integrated modulator
06/03/2003US6574251 Method and device for stabilizing the emission wavelength of a laser source
06/03/2003US6574038 Optical transmission path having sections which overcompensate for dispersion occurring in the sections
06/03/2003US6574037 All band amplifier
06/03/2003US6574022 Integral differential optical signal receiver
06/03/2003US6574019 Transmission system, and station unit and remote units to be used therein
06/03/2003US6574017 Wavelength division multiplex transmitter
06/03/2003US6574016 Method and apparatus for ancillary data in a wavelength division multiplexed system
06/03/2003US6573990 Optical system providing concurrent detection of a calibration signal and a test signal in an optical spectrum analyzer
06/03/2003US6573489 Passive, temperature compensated techniques for tunable filter calibration in bragg-grating interrogation systems
06/03/2003CA2249450C Method and apparatus for cordless infrared communication
05/2003
05/30/2003WO2003044993A1 Infrared (ir) transmission device
05/30/2003WO2003044992A1 Method and system for 80 and 160 gigabit-per-second qrz transmission in 100 ghz optical bandwidth with enhanced receiver performance
05/30/2003WO2003044913A2 Optical communication module with photonic integrated circuit chip (pic) and external booster optical amplifier
05/30/2003WO2003044569A2 L band optical amplifier
05/30/2003WO2002076138A3 Improvements in or relating to communication systems
05/30/2003WO2002075971A3 Optical transmission system with variable network limits
05/30/2003WO2002075936A3 System and method for wide band raman amplification
05/30/2003WO2002065182A3 Subsurface fibre optic cable network installation
05/30/2003CA2467712A1 Hand held remote control device having an improved user interface
05/29/2003US20030101138 Infomation distribution device, information distribution system, and information distribution method
05/29/2003US20030099475 Controlling system for use with variable attenuators
05/29/2003US20030099449 Waveguide optical fiber for parametric amplification within s-band optical range
05/29/2003US20030099432 Optical transmission apparatus and optical transmission module
05/29/2003US20030099425 Optical communication module with one or more photonic integrated circuit (PIC) chips and an external booster optical amplifier for photonic integrated circuits (PICs)
05/29/2003US20030099032 Optical amplifier supervisory control method in WDM communication system
05/29/2003US20030099031 Optical preamplifier with one amplification unit
05/29/2003US20030099030 Optical transmission system and optical transmission method utilizing Raman amplification
05/29/2003US20030099021 Detector for short wave fiber optic communications with compensation to reduce detector jitter
05/29/2003US20030099020 Control method of received power in optical communication, optical transmission apparatus, optical receiving apparatus, and optical communication system
05/29/2003US20030099018 Digital optical network architecture
05/29/2003US20030099015 Avoiding amplified spontaneous emission loops in optical networks
05/29/2003US20030099011 Optical transmission/reception system for various video signals
05/29/2003US20030099010 Method and system for monitoring performance of optical network
05/29/2003US20030098724 Receiving circuit
05/29/2003US20030098407 Integrated fiber optic receiver power meter
05/28/2003EP1315323A2 Detection of, and compensation for, waveform change due to chromatic dispersion
05/28/2003EP1315322A2 Detection of, and compensation for, waveform change due to chromatic dispersion
05/28/2003EP1315321A1 Pump source including polarization scrambling in raman amplified optical WDM systems
05/28/2003EP1315320A2 Optical fibre transmission system with common clock
05/28/2003EP1315319A1 Digital signal transmission system for a spacecraft
05/28/2003EP1315318A2 Device for controlling an optical signal transmission network
05/28/2003EP1315317A2 Apparatus for detecting cutoff of optical signal, optical receiver, optical transmitter, and corresponding method
05/28/2003EP1315258A1 Modulated pump source for fiber raman amplifier
05/28/2003EP1315006A1 Method of producing optical waveguide system, optical device and optical coupler employing the same, optical network and optical circuit board
05/28/2003EP1314318A1 Transceiver applications in hfc networks
05/28/2003EP1314273A1 An optical communication network
05/28/2003EP1314268A2 Optical transmission link with low slope, raman amplified fiber
05/28/2003EP1314267A1 All-optical regenerator for wavelength-division multiplexed signals
05/28/2003EP1314266A2 Integrated optics encryption device
05/28/2003EP1314265A2 Optical channel monitoring chip
05/28/2003EP1314264A1 Method and device for protecting a centralised wdm optical ring network transporting data flow in connected mode
05/28/2003EP1314263A1 Transceiving device
05/28/2003EP1314058A2 Athermalization and pressure desensitization of diffraction grating based wdm devices
05/28/2003EP1314056A1 System and method for using a holographic optical element in a wireless telecommunication system receiver
05/28/2003EP1084537B1 Method and apparatus for automatically identifying system faults in an optical communications system from repeater loop gain signatures
05/28/2003CN1420657A Method and device for transmission of variable length frame for passive optical network
05/28/2003CN1420650A Light transmitting/receiving module and light transmitting/receiving apparatus wherewith
05/28/2003CN1420642A Digital multiplexing method and apparatus for fibre-optic transmission
05/28/2003CN1420641A Wave length division multiplexer and wave length division method
05/28/2003CN1420640A Multipath high-speed light emitting module
05/28/2003CN1420375A Multi-light path photoswitch
05/28/2003CN1420370A Optic fibre grating packing device
05/28/2003CN1110139C Wave-shape shaping circuit and infrared data communication device using same
05/28/2003CN1109907C Symmetrical optical cable and optical transmission system for controlling dispersion
05/27/2003US6571085 Portable telephone which can carry out optical communication for saving power consumption and avoiding erroneous operation without complex operation
05/27/2003US6571032 Apparatus and method for multiplexing and/or demultiplexing optical signals having substantially equal dispersion
05/27/2003US6571031 Device for multiplexing/demultiplexing and method therewith
05/27/2003US6570874 ATM switch
05/27/2003US6570703 Optical amplifying apparatus, optical amplifying method, and optical communication system
05/27/2003US6570701 Long-band light source for testing optical elements using feedback loop
05/27/2003US6570699 Variable optical attenuator which applies a magnetic field to a Faraday element to rotate the polarization of a light signal
05/27/2003US6570698 Apparatus and method for modulating optical intensity with amplitude noise suppressed by using linear optical modulator
05/27/2003US6570697 Format insensitive and bit rate independent optical preprocessor
05/27/2003US6570695 Method and device for generating an error signal in connection with coherent heterodyne reception of lightwaves
05/27/2003US6570694 System and method for low-jitter asynchronous optical regeneration using wavelength sampling
05/27/2003US6570693 Reverse path optical combining using an optical commutator
05/27/2003US6570692 Communication network based on the atmospheric transmission of light
05/27/2003US6570691 Optical transmission system using in-line amplifiers
05/27/2003US6570690 Optical parallel transmission system
05/27/2003US6570689 Portable telephone and automobile system
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