Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
05/2008
05/27/2008US7379677 Method of wavelength conversion and wavelength converter
05/27/2008US7379670 Method and apparatus for chromatic dispersion compensation
05/27/2008US7379669 Method and apparatus for duplex communication in hybrid fiber-radio systems
05/27/2008US7379668 Optical amplification in photonic switched crossconnect systems
05/27/2008CA2438185C Method and apparatus for an optical filter
05/22/2008WO2008058574A1 Provision of alternative communications paths in a communications network
05/22/2008WO2008036205A3 Optical modulator
05/22/2008US20080120552 Device and method for provision of customized system for optical transmission of data
05/22/2008US20080118246 Encoding and decoding architecture and method for pipelining encoded data or pipelining with a look-ahead strategy
05/22/2008US20080118245 Optical node for mesh-type WDM optical network
05/22/2008US20080118244 Resilient packet ring (RPR) network system, RPR node device, redundancy method for the same, program and computer-readable medium
05/22/2008US20080118243 Compact optical multiplexer and demultiplexer
05/22/2008US20080117805 Method and apparatus for cross-talk cancellation in frequency division multiplexed transmission systems
05/21/2008EP1737154B1 Transmission method for ethernet service signal in a wavelength division multiplexing network
05/21/2008EP1588511B1 Output stage for carrying out wdm message transmission and methods for exchanging full light sources in an output stage of this type
05/21/2008EP1518366A4 Transparent flexible concatenation
05/21/2008EP1157493B1 Dwdm catv return system with up-converters to prevent fiber crosstalk
05/21/2008CN201063639Y Light pulse coder/decoder
05/21/2008CN101183913A Method for fine adjustment of dispersion compensation in wavelength division multiplexing optical transmission system
05/21/2008CN100389546C Raman light enlarger
05/21/2008CN100389545C Self-healing wavelength division multiplexing-passive optical network system
05/20/2008US7376356 Optical data transmission system using sub-band multiplexing
05/20/2008US7376355 Optical transmission apparatus and optical transmission system
05/20/2008US7376350 Methods and apparatus for optical network management using pilot tones
05/20/2008US7376349 Analog to digital converter systems and methods
05/20/2008US7376348 Optical communication system
05/20/2008US7376138 Optical communications network
05/20/2008CA2363627C Wavelength-dependent optical signal processing using an angle-to-offset module
05/20/2008CA2342101C Optical amplifiers and optical transmission path
05/15/2008WO2008055529A1 Method and device for hitless tunable optical filtering
05/15/2008WO2008055528A1 Method and device for hitless tunable optical filtering
05/15/2008WO2008055527A1 Method and device for hitless tunable optical filtering
05/15/2008WO2008014374A3 Controlling optical signal transmission to reduce optical signal degradation
05/15/2008WO2006093962A3 Simultaneous spatial and temporal focusing of femtosecond pulses
05/15/2008US20080112706 Optical receiving apparatus and optical communication system using same
05/15/2008US20080112705 Frequency selective mmw source
05/15/2008US20080112704 Methods and apparatus for generating local oscillation signals
05/15/2008US20080112703 Photonic interconnect system
05/15/2008CA2703543A1 Method and device for hitless tunable optical filtering
05/15/2008CA2703538A1 Method and device for hitless tunable optical filtering
05/15/2008CA2703534A1 Method and device for hitless tunable optical filtering
05/14/2008EP1721398B1 Optical add/drop amplification device
05/14/2008CN101180819A Shared high-intensity broadband light source for wavelength-division multiple access passive optical network
05/14/2008CN100388789C System and method for providing integrated communications and broadcasting service
05/14/2008CN100388708C Grouped light channel sharing protection method and system
05/14/2008CN100388707C Method for realizing feedthrough establishment of K words of ring net element of multiplexing segment
05/14/2008CN100388658C Apparatus and method for adjusting mean slope of multi-pumping Raman amplifier gain spectrum
05/14/2008CN100388652C 色散补偿器 Dispersion compensator
05/13/2008US7373087 Adaptive optical transponder
05/13/2008US7373084 Optical network termination device for use in passive optical network based on WDM/SCM scheme
05/13/2008US7373039 Low-ripple optical device
05/13/2008US7373037 Compact wavelength-selective optical crossconnect
05/13/2008US7372854 Communication node system, control node system, and communication system using node systems in ethernet-passive optical network
05/13/2008US7372806 Fault recovery system and method for a communications network
05/13/2008US7372622 Optical transmission system, optical repeater, and optical transmission method
05/13/2008US7372607 Apparatus for reducing drops in a transmission spectrum due to inter-pixel gaps
05/13/2008CA2414257C Multichannel interferometer with phase generated carrier demodulation and quadrature error correction
05/08/2008WO2008054704A2 Ofdm receiving circuit having multiple demodulation paths
05/08/2008WO2008053465A1 Method for finding protected path in mesh networks
05/08/2008WO2007140240A3 Optical communication system and method using optical channels with pair-wise orthogonal relationship
05/08/2008WO2007120708A3 Optical multiplexer and transmitter
05/08/2008WO2007067635A3 Eliminating clock skew by using bidirectional signaling
05/08/2008US20080107428 Optical Transmitter and Optical Communication System
05/08/2008US20080107427 Data transmitter and method of generating none return to zero optical signal with clock component amplification
05/08/2008US20080107425 Optical signal processing apparatus, optical signal transmission system and optical signal processing method
05/08/2008US20080107417 Optical wavelength division multiplexed multiplexer/demultiplexer for an optical printed circuit board and a method of manufacturing the same
05/08/2008US20080107415 System and Method for Discovering Neighboring Nodes
05/08/2008DE102006045134B3 Verfahren zur Ermittlung des optischen Signal-Rausch-Verhältnisses und Empfangseinrichtung für ein optisches Übertragungssystem Method for determining the optical signal-to-noise ratio and receiving device for an optical transmission system
05/08/2008CA2651497A1 Variable spectral phase encoder/decoder based on decomposition of hadamard codes
05/07/2008EP1919105A1 Optical transmitter and optical transmission system
05/07/2008CN201057644Y Channel protection type optical branching device structure
05/07/2008CN101174961A Consumer access interface arrangement of wavelength-division equipment
05/07/2008CN101174904A Mws drift feedback compensator using voa and input power dithering
05/07/2008CN101174073A Crossing polarization modulation type full light wavelength converter
05/07/2008CN100386981C A broad band online fineness compensation arrangement
05/06/2008US7369780 Remodulating channel selectors for WDM optical communication systems
05/06/2008US7369778 Dispersion compensation method and apparatus
05/06/2008US7369777 Method and apparatus for automatically adjusting the optical power directed to a dispersion compensating element
05/06/2008US7369774 Optical frequency controlling device for ultra-dense wavelength-division-multiplexed optical channels
05/06/2008US7369773 Methods and systems for polarization control and polarization mode dispersion compensation for wideband optical signals
05/06/2008US7369772 Optical line terminal arrangement, apparatus and methods
05/06/2008US7369771 Optical network terminator and optical network connection method using it
05/06/2008US7369770 Method of assigning carrier frequencies in an optical transmission network
05/06/2008US7369767 Method of determining a spectral route in an optical telecommunications network
05/06/2008US7369765 Optical network with selective mode switching
05/06/2008US7369587 Temperature control for coarse wavelength division multiplexing systems
05/06/2008US7368700 Optical switch apparatus and optical switching system
05/02/2008WO2008052032A2 Random access structure for optimal cell coverage
05/02/2008WO2008050729A1 Optical space transmission system using visible light and infrared light
05/02/2008WO2008049357A1 A method,system of dada transmission
05/01/2008US20080101797 Method and receiver to increase the spectral efficiency of dpsk modulation format
05/01/2008US20080101793 Network address association recovery
04/2008
04/30/2008EP1360790B1 Optical transmission systems including optical protection systems, apparatuses, and methods
04/30/2008CN201054739Y Dual-light self-curing protection Ethernet optical switching multi-service integrated multiplexing device
04/30/2008CN101170377A Transmission wave length selection method for color dispersion shift optical fiber dense wave division multiplexing system
04/30/2008CN101170363A An optical differential polarization shift key control system and its signal transmission device and method
04/30/2008CN101169502A Two-dimensional encoder-decoder manufacture method based on sampling grating
04/30/2008CN100385841C Method for grooming of channels in WDM aptical communication systems
04/29/2008US7366426 Optical add/drop multiplexer using tunable filter and method for feedback controlling the tunable filter
04/29/2008US7366417 Delivering multicast services on a wavelength division multiplexed network using a configurable four-port wavelength selective crossbar switch