Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
12/2005
12/06/2005US6973229 Node architecture for modularized and reconfigurable optical networks, and methods and apparatus therefor
12/06/2005US6973228 Wavelength stabilizing apparatus and control method
12/06/2005US6972620 Post amplifier array integrated circuit
12/06/2005CA2371287C High dispersion fibers for high-speed transmission
12/03/2005CA2506371A1 Method and system for multiplying the repetition rate of a pulsed laser beam
12/01/2005WO2005114877A1 Optical transmission system for transmitting signal of e-band with other bands
12/01/2005WO2005114277A1 Phase and polarization insensitive gates and switches
12/01/2005US20050265730 Optical transmission system, and trasmitter, receiver and signal level adjustment method for use therein
12/01/2005US20050265728 Optical communications based on optical polarization multiplexing and demultiplexing
12/01/2005US20050265727 Method for transmitting at least one first and second data signal in polarization multiplex in an optical transmission system
12/01/2005US20050265725 Optical transmission apparatus, optical transmission system and dispersion compensating method
12/01/2005US20050265722 Integrated optics and electronics
12/01/2005US20050265721 Multi-band architecture for DWDM rings
12/01/2005US20050265720 Wavelength division multiplexing add/drop system employing optical switches and interleavers
12/01/2005US20050265647 System for amplifying optical signals
12/01/2005US20050265386 System and method for providing packetized video over an optical network
12/01/2005US20050264872 Chromatic dispersion compensation method and wavelength division multiplexing transmission system
11/2005
11/30/2005EP1599957A2 Optical time division multiplexing
11/30/2005EP1415417B1 Optical band scanning monitor system and method
11/30/2005CN1702992A Serial-parallel conversion technology and device of high-speed optical signal
11/30/2005CN1229938C Device and method for filtering optical wavelength selection
11/29/2005US6970653 Fiberoptic system for communicating between a central office and a downstream station
11/29/2005US6970650 One-core two-way optical transmission system
11/29/2005US6970649 WDMA free space broadcast technique for optical backplanes and interplanar communications
11/29/2005US6970617 Reconfigurable service ring and method for operation in optical networks
11/29/2005US6970614 Optical switching equipment, optical transport network, and methods of using them
11/29/2005US6970613 Optical receiver and optical transmission apparatus
11/29/2005US6970433 Multichannel ring and star networks with limited channel conversion
11/29/2005US6970417 Methods and systems for fast restoration in a mesh network of optical cross connects
11/25/2005CA2468222A1 Multi-user quantum cryptography method and system using wavelength division multiplexing
11/24/2005WO2005112332A1 Optical signal quality monitoring device
11/24/2005WO2005112308A1 Wavelenght division multiplexing passive optical network system
11/24/2005US20050259998 Submarine observation apparatus and submarine observation system
11/24/2005US20050259989 Multiple-wavelength pulsed light source for a wavelength division multiplexed passive optical network
11/24/2005US20050259988 Bi-directional optical access network
11/24/2005US20050259915 Optical wavelength division multiplexed system using wavelength splitters
11/24/2005US20050259906 Acousto-optic device and fabrication method of acousto-optic device
11/24/2005US20050259571 Self-healing hierarchical network management system, and methods and apparatus therefor
11/24/2005US20050259541 Delivery method and delivery system of contents information, and central station thereof
11/24/2005US20050259264 Observation apparatus and observation system
11/23/2005EP1598972A1 Optical communication network system, wavelength routing apparatus, communication node, optical path managing method for use in optical cross connect apparatus, and apparatus for that method
11/23/2005EP1598958A1 Observation apparatus and observation system
11/23/2005EP1597853A1 Method and arrangement for the transmission of working signals and protection signals via optical data networks
11/23/2005EP1508215B1 Hitless tunable optical wavelength filters and optical systems using such filters
11/23/2005EP1243092B1 Method for synchronising the phase of optical return-to-zero (rz) data signals
11/23/2005EP1210785B1 Device and method for optical transmission of information
11/23/2005CN1701551A Optical communication network system, wavelength routing apparatus, communication node, optical path managing method for use in optical cross connect apparatus, and apparatus for that method
11/23/2005CN1701543A Optical wavelength multiplex access system and optical network unit
11/23/2005CN1701542A Optical transmission system with gain control for reducing spurious signal components
11/23/2005CN1700625A Comb filter for multiwavelength laser system
11/23/2005CN1228656C Waveguide type light synthesizer/splitter
11/22/2005US6968132 Multiplexing and de-multiplexing optical signals
11/22/2005US6968131 Topology discovery in optical WDM networks
11/22/2005US6968130 System and method for fully utilizing available optical transmission spectrum in optical networks
11/22/2005US6968108 Optical fiber of complex index profile
11/22/2005US6968102 Node device of optical ring network
11/22/2005US6967977 Optical pulse train generator
11/22/2005US6967769 Optical transmission systems and optical amplifiers for use therein
11/20/2005CA2497425A1 Submarine observation apparatus and submarine observation system
11/19/2005CA2500524A1 Observation apparatus and observation system
11/17/2005WO2005109714A1 All-optical signal regeneration
11/17/2005WO2005109706A1 Method and system for protecting a communications network comprising a transport network
11/17/2005WO2005109013A2 Efficient protection mechanisms in a ring topology network utilizing label switching protocols
11/17/2005US20050254820 Optical wireless access systems
11/17/2005US20050254819 Optical in-line amplifier and wavelength-division multiplexer
11/17/2005US20050254818 Optical wireless access systems for train passengers
11/17/2005US20050254476 Cdma transmitting apparatus and cdma transmitting method
11/16/2005EP1596539A1 Device and method for correcting a path trouble in a communication network
11/16/2005EP1595352A1 Method for determining the network load in a transparent optical transmission system
11/16/2005EP1516436A4 Ultra-wideband communication through a wire medium
11/16/2005CN1698299A CDMA transmitting apparatus and CDMA transmitting method
11/16/2005CN1698298A Split-band optical transmission system, optical transmission device, optical receiving device, and use of optical transmission based on above devices
11/16/2005CN1227850C Wavelength devision multiplexing optical transmission system
11/16/2005CN1227556C Light filter and transmission system with the light filter
11/16/2005CN1227550C Fabry-perot laser device for WDM system
11/16/2005CN1227548C Asymmetric array waveguide grating device
11/15/2005US6965739 Optical communication system
11/15/2005US6965561 Terminal multiplexer structure
11/10/2005WO2005107167A1 Wavelenght division multiplexing passive optical network system adopted dual central office
11/10/2005WO2005107104A1 System and method for subcarrier modulation in ism band as supervisory channel
11/10/2005WO2005104735A2 System and method for wave vector multiplexed laser communication
11/10/2005US20050249506 Burst optical communication apparatus
11/10/2005US20050249504 Optical duplexer and optical triplexer
11/10/2005US20050249500 Passive optical network with protection mechanism and its method of relocation
11/10/2005US20050248834 Optical amplifier for amplifying multi-wavelength light
11/09/2005EP1594242A2 Optical duplexer and optical triplexer
11/09/2005EP1594241A1 Optical communication network system
11/09/2005EP1413078A4 Diffractive fourier optics for optical communications
11/09/2005EP0897554B1 Optical clock division
11/09/2005CN2739880Y Electronic govermental-affairs network device using broadwave dual-wave-length wave-division multiplexing technology
11/09/2005CN1695324A Method for carrying out infrared data transmission
11/09/2005CN1694572A Optical transceiver for compensating for loss due to transmission distance in passive optical network
11/09/2005CN1694386A Asymmetric reconstructable OADM device
11/09/2005CN1226837C Warn removing method for optic transport device
11/09/2005CN1226647C Using (110) silicon wafer to manufacture micromechanical photoswitch, array of photoswitch and method
11/09/2005CN1226642C Method for producing optical fiber array element
11/08/2005US6963695 Optical communication system and method of assigning signal channels
11/08/2005US6963564 Method and apparatus for synchronized slotted optical burst switching
11/08/2005US6963539 Method and apparatus for providing a service level guarantee in a communication network
11/03/2005WO2005104310A1 Tunable laser source with optical wavelength addressing