Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
02/2005
02/02/2005CN1574707A Optical receiver
02/02/2005CN1187911C Optical amplifier control
02/02/2005CN1187630C Optical structure for raising suppression ratio and fineness of F-P chamber style tunable filter
02/01/2005US6850712 Optical fiber transmission system with polarization multiplexing to reduce stimulated brillouin scattering
02/01/2005US6850710 Method and apparatus of utilizing RF/microwave and optical mixing techniques to select a given band of an optical transmission
02/01/2005US6850708 Distributed intelligence wavelength division multiplexed network
02/01/2005US6850707 Secure optical layer multicasting to effect survivability
02/01/2005US6850705 Online distributed path routing method and system
02/01/2005US6850663 Equipments including transponder for optical fiber transmission
02/01/2005US6850660 Transmission apparatus
02/01/2005US6850655 Optical apparatus with faraday rotator, static gain flattening filter and variable optical attenuator
02/01/2005US6850584 Clock regeneration circuit and optical signal receiver using the same
02/01/2005US6850515 Optical layer multicasting using a single sub-carrier header and a multicast switch with active header insertion via light circulation
02/01/2005US6850487 Method and apparatus for guaranteeing a failure-recovery time in a wavelength-division multiplexing network
02/01/2005US6850364 Method and apparatus for an optical multiplexer and demultiplexer with an optical processing loop
01/2005
01/27/2005WO2005008925A1 Optical signal branching circuit and optical communication network
01/27/2005WO2005008924A1 Transmission route switching control method and optical transmitter
01/27/2005WO2005008923A2 Optical communication system using optical frequency code, optical transmission device and optical reception device thereof, and reflection type optical communication device
01/27/2005WO2005008388A2 Olt that stores identity numbers of onts
01/27/2005WO2004079931A3 Pad architecture for backwads compatibility for bi- directional transceiver module
01/27/2005US20050019036 System and method for performing high-speed communications over fiber optical networks
01/27/2005US20050019035 Data communications system, station device, subscriber device, redundant configuration switch determination method, operation control method, and program therefor
01/27/2005US20050019034 System and method for communicating optical traffic between ring networks
01/27/2005US20050018995 Wavelength stabilizing apparatus and control method
01/27/2005US20050018966 Method and apparatus for fabricating fiber Bragg gratings
01/27/2005US20050018965 Dynamic optical demultiplexer/multiplexer formed within a PLC
01/27/2005US20050018959 Reconfigurable optical add-drop multiplexer
01/27/2005US20050018953 Multi-channel passive dense wavelength division multiplexing module
01/27/2005US20050018721 Method of operating an array of laser sources integrated in a monolithic chip or in a photonic integrated circuit (PIC)
01/27/2005US20050018720 Contact length trimming or vernier resistor trimming of a semiconductor laser source contact to change the source applied current density and resulting operational wavelength
01/27/2005US20050018271 Apparatus for simultaneous OTDM demultiplexing, electrical clock recovery and optical clock generation, and optical clock recovery
01/27/2005US20050018270 Optical data receiver systems
01/27/2005US20050018259 Optical processing
01/27/2005CA2523669A1 Olt that stores identity numbers of onts
01/26/2005EP1501225A2 System and method for communicating optical traffic between ring networks
01/26/2005EP1501206A1 Access method and connection system by means of optical fiber using dwdm/scm hybrid techniques between base stations and remote antennas in a radiocommunication system
01/26/2005EP1389374B1 Optical cwdm-system
01/26/2005CN2674469Y Tunable band-pass filter based on space birefingence element
01/26/2005CN1571522A Routing method for segment shared recovery of faults in wavelength division multiplexing optical network
01/26/2005CN1571393A Node structure supporting variable-length packet in metropolitan area ring network
01/26/2005CN1571307A Multi-channel optical equalizer for intersymbol interference mitigation
01/26/2005CN1571306A Optical CDMA wavelength-time domain two-dimensional optical orthogonal code coder and decoder
01/26/2005CN1186898C Tuning method for semiconductor laser wide range outer chamber
01/26/2005CN1186897C Wide-range external cavity tunable laser device
01/25/2005US6848062 Mesh protection service in a communications network
01/25/2005US6848006 Ring-mesh networks
01/25/2005US6847788 System and method for equalizing transmission characteristics in wavelength division multiplexing optical communication system
01/25/2005US6847787 WDM network node module
01/25/2005US6847786 Compact wavelength filter using optical birefringence and reflective elements
01/25/2005US6847742 Tunable dynamic gain flattening filter using polarization delays
01/25/2005US6847477 Optical system for converting light beam into plurality of beams having different wavelengths
01/25/2005US6847440 Method for measuring the optical signal-to-noise ratios OSNR in a wavelength division multiplex (WDM) transmission system
01/25/2005CA2210816C Network system and communication method
01/20/2005WO2005006604A1 Wavelength dispersion compensation design method and system thereof
01/20/2005WO2005006041A1 Fiberoptics, fiberoptic transmission line and optical transmission system
01/20/2005WO2005006033A1 An optical filter, an optical interleaver and associated methods of manufacture
01/20/2005WO2003061140A3 Wdm optical transmission system with passive hub
01/20/2005US20050015426 Communicating data over a communication link
01/20/2005US20050014300 Optical probe and method of testing employing an interrogation beam or optical pickup
01/20/2005US20050013618 Optical receiving method, optical receiver and optical transmission system using the same
01/20/2005US20050013615 Optical add-drop apparatus and method
01/20/2005US20050013614 Multi-wavelength, bi-directional optical multiplexer
01/20/2005US20050013612 Multiple wavelength photonic oscillator
01/20/2005US20050013611 Image data processing apparatus in optical subscriber network
01/20/2005US20050013568 Devices and methods for all-optical processing and storage
01/20/2005US20050013532 Methods for protecting data signals which are being transmitted via optical conductors
01/20/2005US20050013332 Method and apparatus of monitoring and controlling the emission wavelengths of a plurality of laser sources integrated on the same chip or in the same photonic integrated circuit (PIC)
01/20/2005US20050013331 Method of tuning integrated laser sources with integrated wavelength tuning elements on the same substrate or in a monolithic photonic integrated circuit (PIC)
01/20/2005US20050013330 Method of tuning optical components integrated on a monolithic chip
01/20/2005US20050013007 Polarization interleaver and optical communication system
01/20/2005DE10328602A1 Verfahren zur Preemphase optischer Signale in einem Übertragungssystem mit Add-Drop-Modulen Procedures for pre-emphasis of optical signals in a transmission system using add-drop modules
01/19/2005EP1499054A2 Method for determining a spectral route in an optical telecommunication network
01/19/2005EP1499044A2 Optical receiving method, optical receiver, and optical transmission system using the same
01/19/2005EP1499043A1 Receiving method and receiver for optical CDMA signals
01/19/2005EP1497939A1 Optical device and method of converting wdm signals into an otdm signal and vice versa
01/19/2005EP1177650B1 Receiver and method for optically transmitting information
01/19/2005CN1568589A Method and system for processing downstream packets of an optical network
01/19/2005CN1567806A Method and apparatus for implementing optical wavelength conversion function in communication system
01/19/2005CN1567805A Channel sharing ring protection supported protection switching protocol implementing method
01/19/2005CN1567804A Apparatus and method for monitoring spectrum of dense channel optical transmission system
01/19/2005CN1567803A A device for implementing OADM
01/19/2005CN1567802A Burst type optical wavelength shifter
01/19/2005CN1567751A Quantum network addressing method and quantum network router
01/19/2005CN1567008A Intelligent type double channel optical fiber amplifier for metropolitan area network
01/19/2005CN1567006A Wavelength selector based on array wave guide interference device and Bragg reflection filter
01/19/2005CN1185820C NXN optical switching structure in full optical switching node
01/18/2005US6845188 DC WDM device and DC WDM system and transmission network using the same
01/18/2005US6845187 Linear optical beam translator for optical routing
01/18/2005US6845186 Optical circuit with harmonic generator
01/18/2005US6845185 High-speed wavelength channel selector and high-speed photonic integrated circuit-type space and wavelength multiplexed channel selector employing the same
01/18/2005US6844977 Multi-channel optical filter
01/18/2005US6844947 All-optical holographic code division multiple access switch
01/13/2005WO2005004363A1 Use of polarization for differentiation of information
01/13/2005WO2005004355A1 A addressing method of quanta network and quanta network router
01/13/2005WO2003103193A3 Amplifiers for optical networks and method
01/13/2005US20050008373 Multi-wavelength generating method and apparatus based on flattening of optical spectrum
01/13/2005US20050008372 Optical line terminal and method that store the identity numbers of a number of optical network terminals that are associated with a single network end point
01/13/2005US20050008370 Optical add/drop multiplexer using circulators and reflectors
01/13/2005US20050008369 Optical device with tunable coherent receiver
01/13/2005US20050008367 Method of determining a spectral route in an optical telecommunications network