Patents
Patents for H04B 10 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication (73,125)
02/2011
02/16/2011EP2285019A1 Optical communication system, apparatus and method
02/16/2011EP2284606A2 Optical device and circuit using phase modulation and related methods
02/16/2011EP2284584A2 Optical communication system
02/16/2011EP2284513A1 Wavelength multiplexed signal measurement device and method
02/16/2011EP2283595A1 Dual-filter optical network interface unit and method of removing noise using same
02/16/2011EP2283594A1 Infrared receiver circuit
02/16/2011EP2283593A1 Wireless data transmission by way of terathertz waves
02/16/2011EP2283592A2 Method and apparatus for controlling the optical output power from a burst mode laser
02/16/2011EP2283591A1 System and method for using pixels of a display device to communicate optical information over a communications link
02/16/2011EP2283551A1 Method and apparatus for reducing the amplitude modulation of optical signals in external cavity lasers
02/16/2011EP1825613B1 Assessing a network
02/16/2011CN201750425U Coarse wavelength division and dense wavelength division optical transmission system
02/16/2011CN201750421U 20G optical transceiver
02/16/2011CN201750420U Multi-path digital optical fiber repeater
02/16/2011CN201750419U Optic-fiber repeater system with double fiber backups
02/16/2011CN201750418U High-stability common-frequency fiber optic repeater
02/16/2011CN201750417U Two-way network management optical workstation
02/16/2011CN201750416U Receiving light power monitoring circuit of light transmit-receive module
02/16/2011CN201750415U Optical power receiving monitoring circuit for optical transceiving module
02/16/2011CN201750414U Semi-automatically-applied WBS-C interstation safety information transmission system
02/16/2011CN1846456B Communication system for wireless microphone
02/16/2011CN1534865B Low noise light receiver
02/16/2011CN101978703A Fast protection scheme for passive optical network
02/16/2011CN101977392A Method for detecting input and output power of digital repeater
02/16/2011CN101977335A Method and device for detecting service capacity of optical network and quantity of creatable services between nodes
02/16/2011CN101977308A Visible command system for video and audio bidirectional transmission and switched networking
02/16/2011CN101977086A Photon type digital microwave frequency measuring method and device adopting phase-shift comb filtering array
02/16/2011CN101977082A Optical receiving and transmitting module, optical transmitting device and optical transmitting method
02/16/2011CN101977081A High-efficiency digital optical fiber CDMA (Code Division Multiple Access) repeater and realizing method
02/16/2011CN101977080A Bias point control device and method of DQPSK (Differential Quadrature Phase Shift Keying) demodulator
02/16/2011CN101977079A Method and system for implementing automatic test of indexes of optical module
02/16/2011CN101977078A Method and system for processing remote failure device in optical transfer network
02/16/2011CN101977077A 1+1 protection method and failure detection device
02/16/2011CN101977076A Transmitter for generating various 16QAM (Quadrature Amplitude Modulation) code types
02/16/2011CN101420270B System for implementing uplink downlink wavelength reusing based on millimeter wave generator
02/16/2011CN101404544B Digital optical fiber remote system technology
02/16/2011CN101369849B Method for switching optical fibre remote radio module cascade nodes
02/16/2011CN101283569B Method for searching route of automatic exchange optical network
02/16/2011CN101167274B Passive optical network system based on wavelength protection and its protection backup method
02/15/2011US7890073 Method and system for detecting carrier wave dropout
02/15/2011US7890000 Optical receiving apparatus
02/15/2011US7889999 Method and apparatus for correcting color imbalance of visible light in wavelength division parallel visible light communications
02/15/2011US7889998 Optical receiver for visible light communication and light communication system using the same
02/15/2011US7889997 Portable wireless terminal for visible light communication
02/15/2011US7889996 Optical-signal-path routing in a multi-chip system
02/15/2011US7889995 In-service optical dispersion determining system and method
02/15/2011US7889994 Installation for conveying a first plurality of electrical signals carried by a first triaxial cable to a second triaxial cable
02/15/2011US7889993 Optical transceiver module having a front facet reflector and methods for making and using a front facet reflector
02/15/2011US7889992 Hybrid superconductor-optical quantum repeater
02/15/2011US7889990 Optical line terminal capable of active bandwidth allocation for passive optical network system
02/15/2011US7889989 Method for implementing tandem concatenation monitoring automatically and apparatus thereof
02/15/2011US7889988 Optical transmission apparatus
02/15/2011US7889640 System and method for establishing protected connections
02/15/2011US7889352 Integrated polarization beam splitter with quarter-wave plate for polarimeter and PMD compensation applications
02/15/2011CA2414458C Optical transmission systems including optical amplifiers and methods of use therein
02/15/2011CA2410257C Raman assisted edfa system and method
02/15/2011CA2383189C Wideband ase light source
02/10/2011WO2011016105A1 Optical line termination, pon system, and data reception processing method
02/10/2011WO2011015290A1 Optical transceiver and fiber-optic gyro
02/10/2011WO2011015143A1 Optical device and optical component thereof
02/10/2011WO2011015142A1 System and method for establishing switch connection in automatically switched optical network
02/10/2011WO2011015002A1 Method and device for cross protection
02/10/2011US20110033195 Polarization diversity receiver systems and methods with polarization mode dispersion mitigation
02/10/2011US20110033193 Modulation method, modulation program, recording medium, modulation device, and optical transmitter
02/10/2011US20110033192 Small Packaged Tunable Optical Transmitter
02/10/2011US20110033191 Method and device for phase recovery and communication system comprising such device
02/10/2011US20110033190 Digital harness with analog inputs
02/10/2011US20110033189 Return path compliance in networks
02/10/2011US20110033181 Apparatus for visible light communication providing intuitive information and method using the same
02/10/2011US20110032619 Tunable chromatic dispersion compensation device and method
02/10/2011US20110032594 Optical modulation device and optical modulation method
02/09/2011EP2282452A1 Data transmission in a ring-type communication network
02/09/2011EP2282423A1 Multi-value optical transmitter
02/09/2011EP2282422A1 Infrared-receiving device with expanded module and receiving method for the same
02/09/2011EP2282301A2 Infrared ray receiver and information processor
02/09/2011EP2282229A1 Connectorized optical assembly and method for connecting optical transceiver units by an optical assembly
02/09/2011EP2281354A1 Heterodyne receiver using differential temperature control of laser sources
02/09/2011EP2127103B1 A method and a device for detection of a first signal superimposed on a second signal
02/09/2011EP2078362B1 Method for determining the optical signal-to-noise ratio and receiver device for an optical transmission system
02/09/2011EP1839402B1 Method of controlling optical amplifier located along an optical link
02/09/2011EP1126264B1 Optical time domain reflectometer
02/09/2011CN201742652U Enclosure structure for optical transceiver
02/09/2011CN201742562U Multi-system digital fiber optic repeater and near-end machine, far-end machine and coverage system thereof
02/09/2011CN201742561U Digital optical fiber remote companding frequency-shift and frequency-selecting exclave cover system
02/09/2011CN201742428U Industrial optical fiber Ethernet switch
02/09/2011CN201742417U Multi-mode digital optical fiber repeater as well as near-end machine, far-end machine and coverage system thereof
02/09/2011CN201742416U Active repeater with plastic optical fiber interface
02/09/2011CN201742415U Control device of DPSK (Differential Phase Shift Keying)/DQPSK (Differential Quadrature Reference Phase Shift keying) module delay interferometer
02/09/2011CN201742414U Optical transceiver with Ethernet function
02/09/2011CN201742413U Optical transmitter and receiver with three-pole active noise inhabiting circuit structure
02/09/2011CN201742412U Optical path protection automatic switching system
02/09/2011CN201742411U Checking instrument of optical cables, optical fibers and FTTX optical fibers
02/09/2011CN201742410U Optical network unit and optical network monitoring system
02/09/2011CN201742409U Test circuit board for PON optical transceiver module
02/09/2011CN201742408U Optical time domain reflectometer and device and system thereof
02/09/2011CN201742407U Optical receiver with encryption function
02/09/2011CN201742406U Video coverage optical receiver
02/09/2011CN201740891U Unlocking resetting device of double-fiber bidirectional SFP light receiving and transmitting integral module casing
02/09/2011CN101971576A Communication control method, station side device, subscriber side device, and communication system
02/09/2011CN101971531A Method for controlling an erbium doped fibre amplifier (edfa) and amplifier arrangement