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)
05/2003
05/27/2003US6570687 Optical packet exchange system and optical switch
05/27/2003US6570686 Reference wavelength providing device for performance monitor in WDM optical transmission system
05/27/2003US6570685 Node for optical communication and wavelength-division multiplexing transmission apparatus having a ring structure composed of the same nodes
05/27/2003US6570683 Wavelength re-use
05/27/2003US6570682 Fault isolation of an optical link by correlating PMD events with other measurements
05/27/2003US6570652 Athermalization and pressure desensitization of diffraction grating based spectrometer devices
05/27/2003US6570536 Communications system
05/27/2003US6570524 Method for remote communication with an addressable target using a generalized pointing device
05/27/2003US6570148 Signal input cutoff detector, photo receiver and signal input cutoff detecting method
05/27/2003CA2397776C Communications system with digital return path
05/27/2003CA2299143C Optical amplifier arranged to offset raman gain
05/23/2003CA2385846A1 Avoiding amplified spontaneous emission loops in optical networks
05/23/2003CA2384581A1 Method and system for monitoring performance of optical network
05/22/2003WO2003043249A1 An implementation method for equalizing a power of densed wavelength division multiplex (dwdm) system
05/22/2003WO2003043248A1 Optical signal modulation method and the optical transmission system
05/22/2003WO2003043233A1 Dynamic spectral equalizer using a programmable holographic mirror
05/22/2003WO2003043232A1 Modulation and filtration of optical signals
05/22/2003WO2003043231A2 Method and apparatus for waveform synthesis and generation
05/22/2003WO2003043230A1 Optical wdm transmission system having a distributed arrangement of regenerators
05/22/2003WO2003043178A2 Frequency agile spread waveform generator and method and pre-processor apparatus and method
05/22/2003WO2003043177A2 Agile spread waveform generator and photonic oscillator
05/22/2003WO2003043126A1 Rf power amplification system
05/22/2003WO2003042722A2 All-optical timing jitter measurement system and method
05/22/2003WO2003015392A3 Technique for reverse transport of data in a hybrid fiber coax cable system
05/22/2003WO2002061955A3 System and method for wireless data exchange between an appliance and a handheld device
05/22/2003WO2002045297A3 Optical communications using multiplexed single sideband transmission and heterodyne detection
05/22/2003US20030097622 Multi-purpose BER tester (MPBERT) for very high RZ and NRZ signals
05/22/2003US20030095803 Optical spatial switch
05/22/2003US20030095777 Attenuation devices
05/22/2003US20030095766 Optical transmission system
05/22/2003US20030095761 SONET/sdh section tracer
05/22/2003US20030095756 Optical transmitting/receiving module and optical transmitting/receiving device using the same
05/22/2003US20030095749 Fiber coupler and compensation system
05/22/2003US20030095745 Modulated pump source for fiber raman amplifier
05/22/2003US20030095738 Planar optical circuit and optical transmission system
05/22/2003US20030095737 Transmitter photonic integrated circuits (TxPIC) and optical transport networks employing TxPICs
05/22/2003US20030095736 Transmitter photonic integrated circuit (TxPIC) chip architectures and drive systems and wavelength stabilization for TxPICs
05/22/2003US20030095734 Method and device for transmitting an optical signal by polarization scrambling
05/22/2003US20030095577 Node judging method, communication system, and node measuring apparatus
05/22/2003US20030095568 Method of transferring frames of variable length for a passive optical network that improves network efficiency and simplifies child apparatus
05/22/2003US20030095406 Method and apparatus for a pulsed L.E.D. illumination source
05/22/2003US20030095324 System and method for wide band Raman amplification
05/22/2003US20030095323 Optical amplifier for wide band Raman amplification of wavelength division multiplexed (WDM) signal lights
05/22/2003US20030095322 Pump monitoring and control in a fiber raman amplifier
05/22/2003US20030095321 Pump source including polarization scrambling in raman amplified optical WDM systems
05/22/2003US20030095315 Apparatus for detecting cutoff of optical signal, optical receiver, optical transmitter, and method of detecting cutoff of optical signal
05/22/2003US20030095314 Optical communication system with optical output level control function
05/22/2003US20030095313 Methods and apparatus for higher-order compensation of transmission distortions in optical transmission media
05/22/2003US20030095312 Common clock optical fiber transmission system
05/22/2003US20030095304 All-optical timing jitter measurement system and method
05/22/2003US20030095303 Open fiber control for optical transceivers
05/22/2003US20030095302 Determination of transmission blockage in an optical telecommunication system
05/22/2003US20030094975 Signal-off detection circuit and optical receiving device using the same
05/22/2003US20030094974 Clock's out-of-synchronism state detection circuit and optical receiving device using the same
05/22/2003US20030094967 Signal-off detection circuit and optical receiving device using the same
05/22/2003DE10151229C1 Optical data transmission path monitoring method uses evaluation of received test signal sequence with increasing signal level
05/21/2003EP1313240A2 Method of transferring frames of variable length for a passive optical network that improves network efficiency and simplifies child apparatus
05/21/2003EP1313239A2 Detection of, and compensation for, waveform change due to chromatic dispersion
05/21/2003EP1313238A2 Detection of, and compensation for, waveform change due to chromatic dispersion
05/21/2003EP1313237A2 Detection of, and compensation for, waveform change due to chromatic dispersion
05/21/2003EP1313236A2 Detection of, and compensation for, waveform change due to chromatic dispersion
05/21/2003EP1313234A1 Dynamic control of an optical module
05/21/2003EP1312975A1 Optical communication system, method of providing excitation light, and distributed raman amplifier
05/21/2003EP1312960A1 Optical transmitting/receiving module and optical transmitting/receiving device comprising the same
05/21/2003EP1312950A1 Chromatic dispersion compensating fibre for fibre optic transmission system in U band
05/21/2003EP1312182A1 Optical transmission system
05/21/2003EP1312181A2 Device and method for optical performance monitoring in an optical communications network
05/21/2003EP1312177A2 Methods and systems for digitally processing optical data signals
05/21/2003EP1312176A2 Holographic optical transceiver employing diffractive optic for atmospheric free space telecommunication
05/21/2003EP1312175A1 Method and device for determining and compensating for the tilting of the spectrum in an optical fiber of a data transmission path
05/21/2003EP1312174A2 Device and method for monitoring signal direction in an optical communications network
05/21/2003EP1312173A1 Method and apparatus for tone tracking in wireless optical communication systems
05/21/2003EP1311882A1 Optical fiber system
05/21/2003CN2552259Y Etching diffraction grating wave dividing multiplex device using two-point focusing to realize pass-band evenness
05/21/2003CN2552258Y Water-proof tail end cable
05/21/2003CN2552257Y All duplex optical fibre transmission structure
05/21/2003CN2552038Y Improved infra-red ray receiver for use in computer periphery
05/21/2003CN2552019Y Multi-wavelength dispersion/dispersion gradient compensator
05/21/2003CN2552018Y 光纤准直器 Fiber Collimators
05/21/2003CN2552017Y High-flat low-crosstalk wavelength division multiplexing device with optimization input
05/21/2003CN1419754A Power controlling network element
05/21/2003CN1419753A Free-space optical WDM communication system
05/21/2003CN1419722A Automatic power control and laser sloep efficiency normalizing circuit
05/21/2003CN1419355A Method for monitoring wavelength, power and signal/noise ratio of optical fibre communication for DWDM
05/21/2003CN1419354A WDM system channel power dynamic equalization method equalizing optical amplifier thereof
05/21/2003CN1419353A Optical code division multiple control channel based optical burst package switching system
05/21/2003CN1419348A Light transmission system
05/21/2003CN1419159A Light intensity controlled changing double-refraction optical fibre all optical switch
05/21/2003CN1419158A Phase controlled changing double-refraction optical fibre all optical switch
05/21/2003CN1419144A Movable optical switch for mirror surface mechanism
05/21/2003CN1419143A Optical path mixing device
05/21/2003CN1109418C System for providing location-specific data to user
05/21/2003CN1109279C Connecting component of computer and port copier
05/21/2003CA2412111A1 Apparatus for detecting cutoff of optical signal, optical receiver, optical transmitter, and method of detecting cutoff of optical signal
05/21/2003CA2402974A1 Pump monitoring and control in a fiber raman amplifier
05/20/2003US6567987 Digital optical transmitter with improved noise power ratio
05/20/2003US6567845 System for and method of processing data, and apparatus and method of sending and receiving data
05/20/2003US6567595 Optical fiber line, optical transmission line, method of making optical cable, and method of laying optical transmission line
05/20/2003US6567587 Dispersion compensator and dispersion-compensating module employing the same
05/20/2003US6567583 Mode converter and method
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