Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
01/2005
01/13/2005US20050008366 Optical signal transmission device
01/13/2005US20050008363 Method and system for management of directly connected optical components
01/13/2005US20050008362 Self-healing wavelength division multiplexing-passive optical network system
01/13/2005US20050008284 Transparent optical switch
01/12/2005EP1496636A1 Optical device with tunable coherent receiver
01/12/2005EP1496635A2 Method and system for management of directly connected optical components
01/12/2005EP1496634A2 Self-healing wavelength division multiplexing passive optical network system
01/12/2005EP1495607A1 Transmission system
01/12/2005EP1495568A1 Transmission system
01/12/2005EP0943192A4 Method and apparatus for saturating an optical amplifier chain to prevent over amplification of a wavelength division multiplexed signal
01/12/2005CN2670962Y Superhigh resoluble dispersion element of light spectrum for intensive wave division complex
01/12/2005CN1565096A Optical amplifier control in WDM communications systems
01/12/2005CN1565095A 光信号传输 Optical signal transmission
01/12/2005CN1564502A Ascending link bandwidth dynamic distribution method and appts. based on ethernet passive optical network
01/12/2005CN1564501A Optical signal noise ratio measuring method and appliances in close wave division multiplex system
01/12/2005CN1564472A Flashing method of non-service cut-off of light transmission of link network
01/12/2005CN1564050A High density, rectangular deep etched crystal raster
01/12/2005CN1184752C Virtual protection method and device for optical fibre path
01/12/2005CN1184501C Wideband adjustable dispersion compensating method
01/11/2005US6842565 Optical modulation/multiplexing circuit
01/11/2005US6842562 Optical add/drop node and method
01/11/2005US6842560 Optical multiplexing circuit and optical multiplexer
01/11/2005US6842554 Optical cross-connect device and optical network
01/11/2005US6842497 Data filtering apparatus and method of filtering a plurality of data signals
01/11/2005US6842126 Block coding system and method for data aggregation
01/11/2005CA2345181C Bi-directional optical transmission using dual channel bands
01/06/2005WO2005002102A1 Fade-resistant forward error correction method for free-space optical communications systems
01/06/2005WO2005002093A1 Method and system for precision cross-talk cancellation in optical amplifiers
01/06/2005WO2005002091A1 Otdm transmitting method and transmitter
01/06/2005WO2005002065A2 Ultra-wideband communication through local power lines
01/06/2005WO2004107629A3 Method and system for determining the gain for an optical signal
01/06/2005US20050005225 Fade-resistant forward error correction method for free-space optical communications systems
01/06/2005US20050002672 Optical transmission device
01/06/2005US20050002671 Wavelength division multiplexed optical transmission systems, apparatuses, and methods
01/06/2005US20050002670 Multi-wavelength light source
01/06/2005US20050002600 Wavelength cross-connect
01/05/2005EP1494383A1 WDM optical ring network for signal transmission protected by local state switching caused by local detection of interrutpion
01/05/2005EP1494382A2 Ethernet passive optical network for convergence of broadcasting and communication
01/05/2005EP1212861A4 Optical fiber ring communication system
01/05/2005EP0818089B1 Optical node in an optical bus network
01/05/2005CN1561021A Optical burst switched network node structure with end-to-end reliability transmission function
01/05/2005CN1561015A Three-wave-length light division multiplexer
01/05/2005CN1183720C Optical communication network, node used in it and method for operating the node
01/05/2005CN1183402C Period polarized magnesium-doped lithium niobate all light switch and preparation process thereof
01/05/2005CN1183394C Array waveguide raster
01/04/2005US6839518 Level adjustment method and wavelength division multiplexing device and system
01/04/2005US6839482 Tunable optical filtering device and method
01/04/2005US6839480 Optical switching apparatus, optical transmission system and method of setting up for optical signal route
01/04/2005US6839164 Optical transmission equipment and supervisory system thereof
01/04/2005US6839162 Optical amplifying apparatus and optical communication system
01/04/2005US6839161 Optical amplification apparatus
01/04/2005US6839160 Method of activating optical communication system, channel increasing/decreasing method, and computer-readable recording medium
01/04/2005US6839159 Demultiplexer for optical time-division multiplexed signals
01/04/2005US6837626 Electro-optical connector
12/2004
12/30/2004US20040264981 Wavelength monitoring and control system
12/30/2004US20040264977 Method and apparatus for waveform generation
12/30/2004US20040264969 Access point for constructing optical fiber-based high-speed optical wireless network system
12/30/2004US20040264967 Configurable optical signal processing device with wideband sources
12/30/2004US20040264966 Wavelength division multiplex optical ring network for transmitting protected signals by local state switching following local interruption detection
12/30/2004US20040264965 Optical code division multiplex transmission method and optical code division multiplex transmission device
12/30/2004US20040264963 Optical network unit, wavelength splitter, and optical wavelength-division multiplexing access system
12/30/2004US20040264959 System and method for precise, accurate and stable optical timing information definition including internally self-consistent substantially jitter free timing reference
12/30/2004US20040264956 Optical wavelength multiplexing transmission apparatus and optical output control method for optical wavelength multiplexing transmission apparatus
12/30/2004US20040264400 Ethernet passive optical network for convergence of broadcasting and communication
12/29/2004WO2004114567A1 Method for pre-emphasising optical signals in a transmission system comprising add-drop modules
12/29/2004WO2004114555A1 Optical wavelength multiplex access system and optical network unit
12/29/2004WO2004114554A1 Route determining method in optical signal transmission system
12/29/2004WO2004113998A1 Optical modulating device
12/29/2004WO2004064280A3 Amplified optical ring transmission system
12/29/2004WO2004054116A3 Method and apparatus for guaranteeing a failure-recovery time in a wavelength-division multiplexing network
12/29/2004WO2004032420A3 Algorithm for dynamic provisioning of fail-over support in generalized multi-protocol label switching enabled networks
12/29/2004EP1492380A1 Configurable optical signals processing device with broadband sources.
12/29/2004EP1492260A1 Optical ADD-DROP multiplexer for WDM systems
12/29/2004EP1492255A2 Optical wavelength monitoring and control system
12/29/2004EP1491066A1 Optical cross-connector containing a multi-stage clos network in which a single-stage matrix comprises one stage of the clos network
12/29/2004EP1490989A1 Vehicular communication system
12/29/2004EP1490719A1 Modular multiplexing/demultiplexing units in optical transmission systems
12/29/2004EP0819344B1 Optical network and arrangement and method in such network
12/29/2004CN1559113A Ring network made using a dual optical data bus
12/29/2004CN1558575A An optical monitoring information communication method and system
12/29/2004CN1558259A Optical power separation and optical cross bonding integrated switch device based on multimode interference principle
12/29/2004CN1558258A Mechanical type electric variable optical attenuator with limit control
12/29/2004CN1182675C Sine twitter superlattice structure
12/29/2004CN1182674C Method and apparatus for operation, protection and restoration of heterogenous optical communication network
12/28/2004US6836621 Tunable device for and method of extracting and inserting optical carriers in optical communications networks
12/28/2004US6836604 Passive optical channel equalizer apparatus, methods and systems
12/28/2004US6836594 Array waveguide grating, array waveguide grating module, optical communication unit and optical communication system
12/28/2004US6836593 Optical fibre comprising a bragg grating and tunability means
12/28/2004US6836353 Redundant switch fabric methods and system for switching of telecommunication signals
12/28/2004US6836349 Optical performance monitoring device
12/25/2004CA2472408A1 Wavelength monitoring and control system
12/23/2004WO2004112293A1 Split-band optical transmission system and optical transmission method used therein
12/23/2004WO2004112286A1 Optical transmission system; and transmitter, receiver and signal level adjustment method for use therein
12/23/2004WO2004112264A2 System and method for performing high-speed communications over fiber optical networks
12/23/2004US20040258411 Node for an optical network
12/23/2004US20040258406 Methods and apparatus for control of optical switching arrays
12/22/2004EP1489768A2 Optical add/drop multiplexer using circulators and reflectors
12/22/2004EP1488573A2 Supervisory channel in an optical network system
12/22/2004EP1488572A1 Allocating connections in a communication system
12/22/2004EP1488562A1 Synchronization system for all optical slotted ring dynamic networks