Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
08/2004
08/26/2004US20040165884 Optical communication device and system
08/26/2004US20040165857 Compact hybrid integrated optical dynamic channel equalizer
08/26/2004US20040165820 Dispersion compensating module, line switching apparatus and optical communication system
08/26/2004US20040165818 Optical cross-connect apparatus
08/26/2004US20040165817 Wavelength multiplexing processing apparatus
08/26/2004US20040165816 Optical cross-connect apparatus
08/25/2004EP1450509A2 Protection switching architecture and method of use
08/25/2004EP1450508A1 Method and device for (de-)multiplexing optical signals
08/25/2004EP1450507A1 Optical communication networks and methods of and the use of light sources for controlling them
08/25/2004EP1449320A1 Method for planning or provisioning data transport networks
08/25/2004EP1025659B1 Optical amplifier control
08/25/2004CN2636507Y Interleave muiltiplexing component element
08/25/2004CN2636506Y Light interleave multiplexer
08/25/2004CN1524359A Terrestrial optical communication network of integrated fiber and free-space links which requires no electro-optical conversion between links
08/25/2004CN1524191A Asymmetric array waveguide grating device
08/25/2004CN1523804A Micro electromechanical system based optical add-drop multiplexer optical add-drop multiplexer
08/25/2004CN1523803A Method and system for increasing spectrum utilization factor in wavelength division multiplexing system
08/25/2004CN1164049C System for controlling wavelength division multiplexing optical amplifier and method thereof
08/25/2004CN1163768C Low dispersion gradient optical fiber
08/24/2004US6782205 Method and apparatus for dynamic equalization in wavelength division multiplexing
08/24/2004US6782204 Network with shared optical sources
08/24/2004US6782203 Scalable optical demultiplexing arrangement for wide band dense wavelength division multiplexed systems
08/24/2004US6782201 Four fiber ring network optical switching circuit using branched inputs
08/24/2004US6782200 Packet-based optical communications networks
08/24/2004US6782198 Switching arrangement for fault recovery in optical WDM ring networks
08/24/2004US6782168 Apparatus for and method of monitoring wavelength multiplexed signal light as well as optical transmission system using the same
08/24/2004US6782158 Apparatus and method for wavelength division multiplexing
08/24/2004US6782157 Bidirectional optical interleaver
08/24/2004US6782156 Interleaved band demultiplexing/multiplexing system
08/24/2004US6782017 Wavelength locker and wavelength discriminating apparatus
08/24/2004US6781747 Method for the amplification of wavelength division multiplex (WDM) signals in a WDM transmission system, as well as optical amplifier, optical amplifier system and WDM transmission system for it
08/24/2004US6781730 Variable wavelength attenuator for spectral grooming and dynamic channel equalization using micromirror routing
08/24/2004CA2350267C Planar waveguide grating device having a passband with a flat-top and sharp-transitions
08/19/2004WO2004070978A2 Laser power grid
08/19/2004WO2004070975A1 Node device
08/19/2004WO2004070457A2 Multiport optical amplifier with narrowcast power equalization
08/19/2004WO2004070429A2 Periodic optical packet switching
08/19/2004WO2004025330A3 Optical cross connect apparatus and method
08/19/2004WO2004014006A3 A system and method for increasing bandwith efficiency and throughput of a data transmission network
08/19/2004US20040161242 Method and apparatus for monitoring channel performance in dense wavelength division multiplexed (DWDM) optical networks
08/19/2004US20040161241 Apparatus for compensating for dispersion and wavelength division multiplexing communications system using the apparatus
08/19/2004US20040161237 Optical systems including add drop devices and methods
08/19/2004US20040161236 System for integrating broadcasting and communication technologies while ensuring qualities of services
08/19/2004US20040161235 WDM-to-switch interface unit
08/19/2004US20040161234 Apparatus, method and program for controlling optical power
08/19/2004US20040161232 Protection switching architecture and method of use
08/19/2004US20040161214 One-core two-way optical transmission system
08/19/2004US20040161189 Optical transmission system constructing method and system
08/19/2004US20040160665 Mach-zehnder interferometer type optical filter and control method thereof
08/19/2004US20040160596 Apparatus and method to accurately monitor signal quality in optical signal transmission systems
08/19/2004DE102004004875A1 Verfahren und System zur Überwachung einer Abschlußeinheit für ein optisches Netzwerk Method and system for monitoring a closing unit for an optical network
08/19/2004CA2515154A1 Multiport optical amplifier with narrowcast power equalization
08/19/2004CA2512373A1 Periodic optical packet switching
08/18/2004EP1447930A2 System for integrating broadcasting and communication technologies while ensuring quality of services
08/18/2004EP1197015B1 Optical regenerator for high bit-rate otdm signals
08/18/2004CN1522514A Method and system for communicating a clock signal over an optical link
08/18/2004CN1521974A A temperature insensitive folding array wave-guide grating (AWG)
08/18/2004CN1162998C A Novel multifunctional light split/insersion multiplexer
08/18/2004CN1162722C Optical fibre raster with sine chirp structure
08/18/2004CA2455640A1 Protection switching architecture and method of use
08/17/2004US6778780 WDM utilizing grating-based channel separators
08/17/2004US6778736 Dynamic variable optical attenuator and variable optical tap
08/17/2004US6778730 Optical signal processing device
08/17/2004US6778725 Optical switching apparatus, optical transmission system and method of setting up for optical signal route
08/17/2004US6778721 WDM switch using OADM and control method thereof
08/17/2004US6778719 Optical device for wavelength interleaving or dissociation and optical switch
08/17/2004US6778550 Method and apparatus for TDM/TDMA communications
08/17/2004US6778278 Temperature insensitive Mach-Zehnder interferometers and devices
08/17/2004US6778102 Communication system and apparatus with synchronous orthogonal coding
08/12/2004WO2004068765A1 Output stage for carrying out wdm message transmission and methods for exchanging full light sources in an output stage of this type
08/12/2004WO2004068764A1 All optical incoherent-to-coherent wavelength conversion and ocdma transceivers using semiconductor optical amplifier
08/12/2004WO2004068268A2 Transmitter and method for transmitting messages on an optical fiber
08/12/2004WO2004068093A1 Method for detecting wavelength and circuit for detecting wavelength and apparatus employing them
08/12/2004US20040156644 Optical transmission system
08/12/2004US20040156637 Wavelength-division-multiplexing system with gain flattening device
08/12/2004US20040156636 Optical temporal demultiplexer
08/12/2004US20040156635 Method and apparatus for the transmission fault detection in an access network
08/12/2004US20040156446 Optimization of ultra-wideband communication through a wire medium
08/12/2004US20040156316 Method and apparatus for providing a service level guarantee in a communication network
08/12/2004US20040156095 Raman amplifier and optical communication system including the same
08/11/2004EP1445978A2 Distributed intelligence wavelength division multiplexed network
08/11/2004EP1445977A2 Distributed intelligence wavelength division multiplexed network
08/11/2004EP1445976A2 Wavelength path monitoring/correcting apparatus in transparent optical cross-connect and method thereof
08/11/2004EP1445975A2 Large-capacity optical router using electric buffer
08/11/2004EP1445973A2 WDM self-healing optical ring network
08/11/2004EP1445881A2 Time division multiplexing point-to-multi-point optical time compression multiplexing transmission system
08/11/2004EP1444801A1 Physically scoped multicast in multi-access networks
08/11/2004CN2632712Y Miniature electric tuning optical attenuator with display
08/11/2004CN1520196A Large volume optical route device utilizing electrical buffer
08/11/2004CN1520080A WDM self-recovering optical annular network
08/11/2004CN1520068A Method and appts. for monitoring and controlling channel performance in close-packed wave division multiplexer optical network
08/10/2004US6775483 System, device, and method for wavelength-division multiplex optical transmission
08/10/2004US6775482 Light receiver
08/10/2004US6775479 WDM optical network with passive pass-through at each node
08/10/2004US6775478 Optical TDM multiplexer, optical TDM demultiplexer, WDM/TDM converter and TDM/WDM converter
08/10/2004US6775432 Method and apparatus for optical wavelength demultiplexing, multiplexing and routing
08/05/2004WO2004066535A1 Optical network protection switching architecture
08/05/2004WO2004066534A1 Optical filter arrangement for an optical wavelength multiplex transmission system
08/05/2004WO2004051891A3 Variable optical attenuator
08/05/2004WO2003021341A3 Optical processing