Patents
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)
01/2008
01/22/2008US7321734 Digital synthesis of readily compensated optical signals
01/22/2008US7321733 Split-band optical transmission system and optical transmission method used therein
01/22/2008US7321732 Method and apparatus for improving noise immunity for low intensity optical communication
01/22/2008US7321730 Method and apparatus for the transmission fault detection in an access network
01/22/2008US7321729 Optical ring network with selective signal regeneration and wavelength conversion
01/22/2008US7321728 Optical waveform for use in a DWDM optical network and systems for generating and processing same
01/22/2008US7321727 Method for network commissioning using amplified spontaneous emission (ASE) sources
01/22/2008US7321702 Optical modulator, optical transmitter, optical modulating method and manufacturing method of the optical modulator
01/22/2008US7321621 Differential receiver circuit with electronic dispersion compensation for optical communications systems
01/22/2008US7321606 Laser trim and compensation methodology for passively aligning optical transmitter
01/22/2008CA2460889C Method and apparatus for transmission of upstream data in an optical network
01/17/2008WO2008008678A2 Light source with precisely controlled wavelength-converted average power
01/17/2008WO2008008490A2 Fiber in the home
01/17/2008WO2008008125A2 Method and device for secret radio communications
01/17/2008WO2008008105A2 Detection and monitoring of partial discharge of a power line
01/17/2008WO2008006966A2 Communication interface for electricity meter
01/17/2008WO2008006964A2 Deep-sea network and deployment device
01/17/2008WO2008006766A1 Method and arrangements for determining the optical signal-to-noise ratio for an optical transmission system
01/17/2008WO2008006755A1 Method and device for surveillance of optical connection paths for a transparent optical network
01/17/2008WO2008006318A1 1+1 service protection method in obs networks, switching node apparatus and service protection system
01/17/2008WO2008006268A1 Method system and node device for realizing service protection in the automatically switched optical network
01/17/2008WO2007129031A8 Data signal isolation apparatus
01/17/2008WO2007082055A3 Broad- and inter-band multi-wavelength-reference method and apparatus for wavelength measurement or monitoring systems
01/17/2008WO2007035598A3 Apparatus and method for adaptive adjustment and performance monitoring of avalanche photo-diode optical receiver and laser transmitter for fiber link long haul applications
01/17/2008US20080013964 Optical reception apparatus
01/17/2008US20080013963 Demodulation circuit, ic, and communication device
01/17/2008US20080013962 Pulse-Modulated Signal Demodulation Circuit, and Photoreceiver Circuit and Electric Appliance Provided Therewith
01/17/2008US20080013960 Apparatus and method for providing information for at least one structure
01/17/2008US20080013958 Information communication system for use in robot
01/17/2008US20080013957 Service Aggregation Gateway
01/17/2008US20080013956 Provisioning of Services Via an Optical Fiber Network
01/17/2008US20080013951 Wavelength division multiplexing passive optical network system
01/17/2008US20080013950 Wavelength reconfigurable optical network
01/17/2008US20080013949 Link connectivity verification method
01/17/2008US20080013947 Method and device for surveillance of optical connection paths for a transparent optical network
01/17/2008US20080013909 Modular Optical Fiber Network Interface
01/17/2008US20080013906 Optical fiber, transmission system, and wavelength division multiplexing system
01/17/2008US20080013728 Method and Device for Ensuring Data Security in Passive Optical Network
01/17/2008US20080013164 Amplifying Optical Electromagnetic Wave Concentrator
01/17/2008US20080013163 Light source with precisely controlled wavelength-converted average power
01/17/2008US20080013162 Method for measuring nonlinear optical properties, and optical amplifier and optical transmission system using same
01/17/2008US20080011943 Optical system and method for monitoring variable in rotating member
01/17/2008DE102006032463A1 Spektrumanalyse externer optischer Modulatoren Spectrum analysis of external optical modulators
01/17/2008CA2656911A1 Method and arrangements for determining the optical signal-to-noise ratio for an optical transmission system
01/17/2008CA2654665A1 Deep-sea network and deployment device
01/16/2008EP1879309A1 Method and device for the surveillance of optical connection paths for a transparent optical network
01/16/2008EP1879308A1 Method and apparatus for monitoring optical links in an optical transparent network
01/16/2008EP1879307A1 Method and apparatus for protecting a network link
01/16/2008EP1878144A1 Optical dispersion compensation
01/16/2008EP1878143A1 Passive optical test termination
01/16/2008EP1878142A1 Method and device for in-band optical performance monitoring
01/16/2008EP1878141A2 Cotdr arrangement for an undersea optical transmission system comprising multiple cable stations and multiple transmission segments
01/16/2008EP1653828B1 Toothbrush
01/16/2008EP1311882B1 Optical fiber system
01/16/2008CN201008161Y Electricity-saving device for optical network unit
01/16/2008CN201008160Y Single fiber bidirectional protection optical module with return loss monitoring function
01/16/2008CN201008159Y Optical module assembly structure and optical module using the same
01/16/2008CN201008158Y Multi-business synthetic access equipment
01/16/2008CN101107834A Communication device, communication system, communication method, communication program, and communication circuit
01/16/2008CN101106434A A single optical three-folded wave division multiplexer for flat frequency spectrum
01/16/2008CN101106430A Optical access system of protocol converter
01/16/2008CN101106429A Optical access system for optical modem using high speed synchronization data exchange standard
01/16/2008CN101106428A Optical network bridge optical fiber access system for European data transfer standard
01/16/2008CN101106427A Single network bridge optical fiber access system for European data transfer standard
01/16/2008CN101106426A Optical fiber access system for multi-service optical fiber transceiver
01/16/2008CN101106425A Optical fiber access system for Ethernet optical model
01/16/2008CN101106424A Method and apparatus for monitoring optical links in an optical transparent network
01/16/2008CN101106253A Method for measuring nonlinear optical properties, and optical amplifier and optical transmission system
01/16/2008CN100362816C Method for detecting spare channel
01/16/2008CN100362758C Inter-board channel protection device and method
01/16/2008CN100362379C Self-adaptive dispersion compensation process and device in polarization mode of broadband
01/16/2008CN100362377C Sol-gel material derived adjustable light attenuator and its producing method
01/16/2008CN100362376C Latching mechanism of plug-able optical module
01/15/2008US7319886 Communication system
01/15/2008US7319824 Optical signal receiver, and method for controlling identification point for binarization processing performed thereby
01/15/2008US7319823 Modulation scheme and transmission system for NRZ signals with left and right side filtering
01/15/2008US7319822 System and method of space-time equalization to mitigate effects of fading and scintillation for wireless communication
01/15/2008US7319821 Chromatic dispersion generating apparatus
01/15/2008US7319820 Method of manufacturing optical communication system
01/15/2008US7319819 Suppression of four-wave mixing in ultra dense WDM optical communication systems through optical fibre dispersion map design
01/15/2008US7319817 System for transparent node for WDM shared “virtual ring” networks
01/15/2008US7319816 Detection of disconnection in an optical transmission line
01/15/2008US7319801 Optical transmission system and dispersion compensation method for optical transmission system as well as simulation equipments
01/15/2008CA2481910C Polarization mitigation technique
01/10/2008WO2008005958A2 Communication system for video and bidirectional data transmission between a cable head-end and a plurality of subscribers using a smart multitap
01/10/2008WO2008004987A1 Method, device and computer program for classifying a received signal
01/10/2008WO2008004309A1 Transmitter apparatus, receiver apparatus, transmitting method and receiving method
01/10/2008WO2008003528A1 Method and apparatus for remote communication using the interpretation of thermoluminescence or photoluminescence signals
01/10/2008WO2008003267A1 An optical burst switching network based burst packet transmitting system and the method thereof
01/10/2008WO2008003194A1 An optical signal source device and control method for realizing adjustable optical signal-to-noise ratio
01/10/2008WO2008003187A1 Unlocking device for opto-electronic module
01/10/2008WO2008003186A1 Bail type unlocking device for opto-electronic module
01/10/2008WO2007119160A3 Off-axis rotary joint
01/10/2008WO2007002815A3 Gigabit ethernet longwave optical transceiver module having amplified bias current
01/10/2008US20080010512 Format Converter with Smart Multitap
01/10/2008US20080008479 Method and arrangement for detecting light signals
01/10/2008US20080008478 Transmitting device for optical signals
01/10/2008US20080008476 Optical transmitting/receiving apparatus and optical transmitting/receiving method
01/10/2008US20080008473 WDM-PON system with optical wavelength alignment function
01/10/2008US20080008472 Distribution optical elements and compound collecting lenses for broadcast optical interconnect