Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
07/2003
07/24/2003WO2003061140A2 Wdm optical transmission system with passive hub
07/24/2003WO2002089380A3 Network transceiver for extending the bandwidth of optical fiber-based network infrastructure
07/24/2003WO2002058301A3 Split wave method and apparatus for transmitting data in long-haul optical fiber systems
07/24/2003WO2002025368A3 Optical wavelength-converting apparatus
07/24/2003WO2001089127A3 Optical networking devices and methods for optical networks with increased transparency
07/24/2003US20030138255 Power controlling network element
07/24/2003US20030138254 Light branching/inserting apparatus and light branching apparatus using wavelength selection filter
07/24/2003US20030138253 Dynamic wavelength management method in OBS networks
07/24/2003US20030138251 Method and system for performance monitoring in an optical network
07/24/2003US20030138250 Wavelength division multiplex (wdm) signal monitor
07/24/2003US20030137927 Orthogonal polarization multiplexing transmission apparatus and multiplexing method used for the same
07/24/2003US20030137721 Optical amplifier device
07/24/2003US20030137720 Raman amplifier and wavelength division multiplexing optical communication system, and method of controlling raman amplification
07/23/2003EP1330061A1 Optical filter and transmission system incorporating an optical filter
07/23/2003EP1330055A2 Raman amplifier and wavelength division multiplexing optical communication system
07/23/2003EP1330054A2 System and method for multi-level phase modulated communication
07/23/2003EP1329047A1 System and method for code division multiplexed optical communication
07/23/2003EP1329046A2 Multiplexer, demultiplexer and add/drop multiplexer for single mode optical fiber communication links
07/23/2003EP1328836A2 Optical serial link
07/23/2003EP1123596B1 Method for channel adjustment of transmission signal power in a wavelength division multiplexing transmission system
07/23/2003CN1432229A 光学传输系统 The optical transmission system
07/23/2003CN1431530A Multi-mode interference coupler based on ridge type light wave guide
07/22/2003US6597830 Matrix optical switch and optical ADM
07/22/2003US6597483 Laser oscillation wavelength monitoring device
07/22/2003US6597482 Multiplexing/demultiplexing apparatus for wavelength division multiplexed system and wavelength division multiplexed passive optical subscriber networks using the same apparatus
07/22/2003US6597480 Wavelength tunable filter apparatus
07/22/2003US6597479 Fiber quadrupler device method for providing full duplex communications to a synchronous optical network over a single optical fiber
07/22/2003CA2238923C Optical transmission system with dynamic compensation of transmitted power
07/17/2003WO2003058868A2 Dynamic route selection for label switched paths in communication networks
07/17/2003WO2003058854A1 Duty-cycle adjustable clock generator with low reverse bias and zero dc level
07/17/2003WO2003058853A1 Duty-cycle adjustable clock generator
07/17/2003WO2003058303A2 Acousto-optic tunable apparatus having a fiber bragg grating and an offset core
07/17/2003WO2003058183A1 Optical spectral power monitors employing time-division-multiplexing detection schemes
07/17/2003WO2002060095A3 Processing of optical performance data in an optical wavelenght division multiplexed communication system
07/17/2003US20030133716 Optical filter and transmission system incorporating an optical filter
07/17/2003US20030133174 All-optical holographic code division multiple access switch
07/16/2003EP1327898A1 Optical fiber with a complex index profile in form of a ring structure
07/16/2003CN1430826A DWDM optical source wavelength control
07/16/2003CN1430370A Erbium adulterated optical fiber amplifier gain control apparatus
07/16/2003CN1430369A Coarse wave division complexing apparatus and preparation method of its used conpler
07/16/2003CN1430348A Time-division multiplexing and wave-division multiplexing optical exchange node
07/16/2003CN1430347A Optical relay amplifier and wave division multiplexer
07/15/2003US6594428 Dispersion compensating optical transmission line and system
07/15/2003US6594412 Optical add/drop device
07/15/2003US6594410 Wide range tunable optical filter
07/15/2003US6594322 Method of distributed loop control for a multicarrier telephony transport
07/15/2003US6594236 Alarm suppressing method for optical transmission apparatus
07/15/2003US6594069 Control method and control apparatus of optical wavelength variable filter
07/15/2003US6594056 Receiver for use in a transmission system for spectral-coded data as well as a method
07/15/2003US6594049 Optical router
07/15/2003US6594048 Technique to obtain channel plans for WDM systems with reduced four-wave mixing effect
07/15/2003US6594047 Apparatus and method for providing optical channel overhead in optical transport networks
07/15/2003US6594046 Level-flattening circuit for WDM optical signals
07/15/2003US6592272 Burst mode transmission over multiple optical wavelengths
07/11/2003CA2501683A1 Multiplex communication system and method
07/11/2003CA2501678A1 Multiplex communication system and method
07/11/2003CA2501670A1 Multiplex communication system and method
07/10/2003WO2003056738A1 Noise reduction in optical communications networks
07/10/2003WO2003056736A1 Wdm add/drop multiplexer module
07/10/2003WO2003056735A1 Improved wdm add/drop multiplexer module
07/10/2003WO2003056734A1 Improved wdm add/drop multiplexer module
07/10/2003WO2003003636A3 Control of parameters in a global optical controller
07/10/2003WO2002084905A3 Optical sources and transmitters for optical telecommunications
07/10/2003WO2002060123A3 Method and system for processing downstream packets of an optical network
07/10/2003WO2002043296A3 Birefringent interleaver for wdm fiber optic communications
07/10/2003WO2001084754A3 Optical frequency division multiplexing
07/10/2003US20030128990 Optical device with a temperature insensitive optical pathlength
07/10/2003US20030128986 Wavelength interleaving add/drop multiplexer
07/10/2003US20030128985 Modular optical network node
07/10/2003US20030128984 Low loss wdm add drop node
07/10/2003US20030128983 Digital RF return over fiber
07/10/2003US20030128982 Method for transmitting at least one first and one second data signal in polarization division multiplex in an optical transmission system
07/10/2003US20030128979 Optical switching apparatus and optical communication network system
07/10/2003US20030128978 Two-fiber optical shared protection ring with a bi-directional 4 x 4 optical switch fabric
07/10/2003US20030128928 Interleavers for AWGs
07/10/2003US20030128917 Method and apparatus for optical signal processing using an optical tapped delay line
07/10/2003US20030128512 Improved vdm and/drop multiplexer module
07/09/2003EP1326472A1 Optical TDM and WDM switching node
07/09/2003EP1325575A2 System and method for communicating optical signals between a data service provider and subscribers
07/09/2003EP1325573A2 Pump amplitude modulation for distributed raman amplifier
07/09/2003CN1428961A Method of optical wavelength converter capable of fleribly setting speed rate and its equipment
07/09/2003CN1428959A Double-way wave division multiplex optical network system
07/08/2003US6591040 Ultra-dense wavelength division multiplexing/demultiplexing devices
07/08/2003US6591038 Optical interleaver and demultiplexing apparatus for wavelength division multiplexed optical communications
07/08/2003US6591035 Method for dispersing light using multilayered structures
07/08/2003US6590684 Optical system
07/08/2003US6590681 Optical WDM network having an efficient use of wavelengths and a node therefor
07/08/2003US6588950 Optical transmission system and transmitters and receivers
07/03/2003WO2003055111A1 Optical transmission network
07/03/2003WO2003055109A1 Optical phase modulation
07/03/2003WO2003055106A2 Electrooptical device for channel equalization in a multichannel optical link
07/03/2003WO2002082166A3 Variable optical source
07/03/2003WO2002004989A8 A system and method for increasing channel capacity of fiber-optic communication networks
07/03/2003US20030126285 Transmission device, and data processing method in same
07/03/2003US20030123881 WDM optical network with passive pass-through at each node
07/03/2003US20030123880 Programmable OADM with chromatic dispersion, dispersion slope and amplitude ripple compensation, and method
07/03/2003US20030123878 Wide passband optical interleaver
07/03/2003US20030123877 System and method for increasing bandwidth efficiency and throughput of a data transmission network
07/03/2003US20030123826 Optical transmission line and optical transmission system using optical transmission line
07/03/2003US20030123801 All-fiber dynamic optical wavelength switch/filter device