Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
12/2004
12/22/2004EP1488552A1 Dynamic broadband optical equalizer
12/22/2004EP1488548A2 Communication system and split-band amplifying apparatus using a depressed-profile fiber amplifier
12/22/2004EP1488547A2 Systems and methods for active monitoring and management of fiber links
12/22/2004EP1488485A2 TRANSMITTER PHOTONIC INTEGRATED CIRCUIT (TxPIC) CHIP WITH ENHANCED POWER AND YIELD WITHOUT ON-CHIP AMPLIFICATION
12/22/2004EP1488265A2 Demultiplexing optical signal receiver photonic integrated circuit (rxpic) and associated transmitter and method of testing a photonic integrated circuit
12/22/2004CN2665726Y Wavelength-division multiplex for measuring Raman scattering
12/22/2004CN1557060A Improvements in or relating to signal transmission in an optical system
12/22/2004CN1556426A Reflection type array wave guide modulating type photoswitch
12/22/2004CN1556423A 3 X 2 light guide switch
12/22/2004CN1181637C Waveform regulation structure and method for optical filter of DWDM transmission system
12/21/2004US6833948 Method for implementing power equalization of dense wavelength division multiplexing system
12/16/2004WO2004109960A1 A communications system
12/16/2004WO2004109959A2 Intelligent wavelength division multiplexing systems based on arrays of wavelength tunable lasers and wavelength tunable resonant photodetectors
12/16/2004WO2004109958A1 Flexible banded mux/demux architecture for wdm systems
12/16/2004US20040253003 Gain compensating optical receiver circuit
12/16/2004US20040253002 Optical receiver
12/16/2004US20040252999 Method for controlling wavelength characteristics of optical transmission powers by Raman amplification, and wavelenth division multiplexing optical communication system and optical amplifier adopting the same
12/16/2004US20040252996 Flexible banded MUX/DEMUX architecture for WDM systems
12/16/2004US20040252995 Architecture and method for framing control and data bursts over 10 GBIT Ethernet with and without WAN interface sublayer support
12/16/2004US20040252938 Reconfigurable optical add-drop module, system and method
12/16/2004US20040252387 Temperature insensitive Mach-Zehnder interferometers and devices
12/16/2004DE102004018166A1 Pre-emphasis method for optical multiplex signal in optical transmission system has new signal values calculated from actual signal powers at transmitter and receiver and mean power at transmission side
12/15/2004EP1487138A1 Apparatus comprising optical circuits linked to an optical fibre cable
12/15/2004EP1486017A1 Procedure for sorting flows in a transport network carrying circuit data flows
12/15/2004EP0917784B1 Method for optimising a mostly optical network
12/15/2004CN1555163A Recovering method for optical transmission circular network wrong connection business
12/15/2004CN1555147A Integrated dynamic light add and drop multiplexer module based on filter wave light switch unit
12/15/2004CN1180549C Polarization dispersion system used in wavelength-division multiplex signals to compensate other information channels
12/15/2004CN1180305C Dynamic adjustable optical add and drop multiplexer module
12/15/2004CN1180284C Multi-mode interference coupler based on ridge type light wave guide
12/14/2004US6832051 Dispersion managed optical transmission links for wavelength division multiplexed systems
12/14/2004US6832047 Optical transmission system for frequency-multiplexed signal
12/14/2004US6832046 Method and apparatus for multirate transmission in a passive optical network
12/14/2004US6832027 Interleavers for AWGs
12/14/2004US6832019 Duplex reflective re-configurable optical add/drop multiplexers
12/14/2004US6832017 Bidirectional add/drop multiplexer and bidirectional add/drop amplifier module for band-split bidirectional networks
12/14/2004US6831784 Multilayered optical thin-film filter, method of designing the same and filter module utilizing the same
12/14/2004US6831775 Method and apparatus for wavelength conversion
12/14/2004US6831774 Multi-wavelength generating method and apparatus based on flattening of optical spectrum
12/14/2004US6831773 Bidirectional coding splitter
12/09/2004WO2004107629A2 Method and system for determining the gain for an optical signal
12/09/2004WO2004107628A1 A light source cable of lasing that is wavelength locked by an injected light signal
12/09/2004WO2004107627A1 A method for conveying management information
12/09/2004WO2004107626A1 Optical wavelength multiplex access system
12/09/2004WO2004107625A1 Method and system for identification of channels in an optical network
12/09/2004WO2004107617A2 Optical ring network with selective signal regeneration and wavelength conversion
12/09/2004WO2004107610A1 Signal waveform deterioration compensator
12/09/2004US20040249976 Optical wavekey network and a method for distributing management information therein
12/09/2004US20040247323 Illuminator including optical transmission mechanism
12/09/2004US20040247322 Dense wavelength division multiplexing on coarse wavelength division multiplexing networks
12/09/2004US20040247321 Method for determining the dispersion characteristics of minimum phase filters
12/09/2004US20040247319 Characterization of a transmission path of an optical signal having an optical communication signal
12/09/2004US20040247318 Optical network system and controller
12/09/2004US20040247316 System and method for performing in-service fiber optic network certification
12/09/2004US20040247314 Optical communication system
12/09/2004US20040247312 Optical communication system
12/09/2004US20040247270 Optical transmission line and optical transmission system
12/09/2004US20040247239 Hitless errorless trimmable dynamic optical add/drop multiplexer devices
12/09/2004US20040247234 Optical bypass method and architecture
12/09/2004US20040246892 Informed dynamic path protection for optical networks
12/09/2004US20040246582 Optical interleaver and filter cell design with enhanced clear aperture
12/09/2004US20040246566 Optical transmission system
12/09/2004US20040246466 Method and apparatus for channel detection
12/09/2004CA2526463A1 A method for conveying management information
12/08/2004EP1483860A1 Add/drop node for an optical communications network
12/08/2004EP1483853A2 Optical fiber communication systems with brillouin effect amplification
12/08/2004EP1483607A2 Optical wavelength cross connect architectures using wavelength routing elements and methods for performing in-service upgrades
12/08/2004EP1342106A4 Point-to-multipoint passive optical network that utilizes variable-length packets and variable-length upstream tine slots
12/08/2004EP1064750A4 System and method for demultiplexing in optical communication systems
12/08/2004CN2662539Y Structure of pluggable single fiber twoway light transceiver
12/08/2004CN1554160A WDM channel monitoring system and method
12/08/2004CN1554138A 波分复用光波长转换器 WDM optical wavelength converter
12/08/2004CN1553618A Movable upgrading apparatus for double-directional transmission system realizing wave-band expand
12/07/2004US6829438 Add/drop multiplexing in WDM optical networks
12/07/2004US6829405 Reconfigurable optical add-drop multiplexer
12/07/2004US6829216 Method and system for designing a network
12/07/2004US6829096 Bi-directional wavelength division multiplexing/demultiplexing devices
12/07/2004US6829083 Method for gain equalization, and device and system for use in carrying out the method
12/02/2004WO2004084446A3 Shared path protection method and system
12/02/2004US20040240884 Optical ring network with selective signal regeneration and wavelength conversion
12/02/2004US20040240882 Compact enclosure for interchangeable SONET multiplexer cards and methods for using same
12/02/2004US20040240881 Ring network made using a dual optical data bus
12/02/2004US20040240771 Device and method for receiving, processing and transmitting optical an electrical signals and method for manufacturing such a device
12/02/2004US20040240045 Gain-flattened wideband erbium-doped optical fiber amplifier
12/02/2004US20040240040 Method and system for determining gain for an optical signal
12/02/2004DE10318840A1 Optical demultiplexer for data signals with multiplexed data packets has splitter/ beam divider, non-linear elements receiving partial signals, control signals for demultiplexing data signals, filters
12/01/2004CN1551549A Network element for use in an optical communication network
12/01/2004CN1551548A Bi-directional optical add/drop multiplexer for WDM optical networks
12/01/2004CN1551542A Method and system relating to light phase conjugator
12/01/2004CN1551428A Single optical fibre bidirectional optical transmission system and single optical fibre bidirectional optical amplifier
12/01/2004CN1178432C Communication system and method for operating nodes in communication system
12/01/2004CN1178078C Optical fibre and optical communication system using it
11/2004
11/30/2004US6826368 Wavelength division multiplexing (WDM) with multi-frequency lasers and optical couplers
11/30/2004US6826349 Wavelength router
11/30/2004US6826331 Method of extracting spectral parameters of channels from non-channelized light
11/30/2004US6826326 Quasi-hitless tunable add-drop filters
11/30/2004US6826201 Multiplexing SONET /SDH data streams using independent encoding schemes
11/30/2004US6826164 Method and apparatus for multiplexing in a wireless communication infrastructure
11/30/2004US6826163 Method and apparatus for multiplexing in a wireless communication infrastructure
11/30/2004US6825714 Multichannel interferometer with phase generated carrier demodulation and quadrature error correction