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)
02/1998
02/12/1998WO1998006191A2 Automatic feedback gain control in a doped fiber amplifier
02/12/1998DE19647214C1 Optical data reception and transmission apparatus e.g. for identification system
02/12/1998DE19633921C1 Schaltungsanordnung für den Betrieb von Wellenlängenmultiplexsystemen Circuit arrangement for the operation of wavelength-division multiplexing systems
02/12/1998CA2261873A1 Automatic feedback gain control in a doped fiber amplifier
02/11/1998EP0823621A2 Apparatus for detecting a fault location in an optical fiber line
02/11/1998EP0823160A1 Multiple reflection multiplexer and demultiplexer
02/11/1998EP0823154A1 Method and device for transmitting analogue signals by means of a transmission system using optical transmission lines
02/11/1998CN1173251A 光网络 Optical Network
02/10/1998US5717798 Optical waveguide system comprising a mode coupling grating and a mode discrimination coupler
02/10/1998US5717796 Optical fiber transmission system utilizing a line switched ring to provide protection
02/10/1998US5717795 Optical wavelength division multiplexed network system
02/10/1998US5717712 Laser communication system with temperature controlled
02/10/1998US5717689 Data link layer protocol for transport of ATM cells over a wireless link
02/10/1998US5717510 Optimized optical transmission system for high capacity transmission
02/10/1998US5717489 Polarization mode dispersion measuring instrument and method
02/10/1998CA2095072C Optical link termination equipment optoelectronic transducer and its application to various types of optical links
02/05/1998WO1998005134A1 Bidirectional multichannel optical telecommunication system
02/05/1998WO1998005133A1 Device for adding and dropping optical signals
02/05/1998WO1998004954A1 Tunable add/drop optical device
02/05/1998WO1998004944A1 Optical multiplexer/demultiplexer
02/05/1998WO1998004943A1 Optical module for access networks to wide band communication systems and relevant production method
02/05/1998WO1998004941A1 Dispersion compensating single mode waveguide
02/05/1998CA2262607A1 Bidirectional multichannel optical telecommunication system
02/05/1998CA2261918A1 Device for adding and dropping optical signals
02/05/1998CA2221737A1 Dispersion compensating single mode waveguide
02/04/1998EP0822676A2 Optical integrated circuit for bidirectional communications and method for producing the same
02/04/1998EP0822428A1 Method and apparatus for atomic absorption-spectroscopy
02/04/1998EP0612452B1 Apparatus for linearization of optic modulators using a feed-forward predistortion circuit
02/04/1998CN1172564A Optical system employing near-incoherent processing for distortion correction
02/04/1998CN1172562A Transmission system for non-linear transmission medium
02/03/1998US5715339 Optical parallel transmission device
02/03/1998US5715271 Polarization independent grating resonator filter
02/03/1998US5715077 Multi-mode infrared input/output interface
02/03/1998US5715076 Remodulating channel selectors for WDM optical communication systems
02/03/1998US5715075 Optical processing device operating in a wavelength-synchronized mode and an optical circuit exchanger that uses such an optical processing device
02/03/1998CA2093149C Multipath optical transmission system controller
01/1998
01/31/1998CA2211760A1 Optical integrated circuit for bidirectional communications and method for producing the same
01/29/1998WO1998004058A1 Optical network
01/29/1998WO1998004057A1 Telecommunications system simultaneously receiving and modulating an optical signal
01/29/1998WO1998004056A1 Fault-tolerant optical routing switch
01/29/1998WO1998004051A1 Device for wireless communication with a mobile telephone
01/29/1998DE19732110A1 Störlichtsperrfilter eines Fernsteuerungsempfängers Störlichtsperrfilter a remote control receiver
01/28/1998EP0821502A2 Time division duplex with infrared link
01/28/1998EP0821497A1 Computer communication using fiber-optic cable
01/28/1998EP0821251A2 Variable optical waveguide attenuator
01/28/1998EP0821224A2 Optical power meter for detecting loss factors in fiber optic communications
01/28/1998EP0820671A1 Signal transmission between networked computers
01/28/1998EP0820666A1 Optical multichannel system
01/28/1998CN1171683A 光传输系统 The optical transmission system
01/28/1998CN1171587A Optical bidirectional serial interface
01/27/1998US5712942 Optical communications system having distributed intelligence
01/27/1998US5712937 Optical waveguide including singlemode waveguide channels coupled to a multimode fiber
01/27/1998US5712932 Dynamically reconfigurable WDM optical communication systems with optical routing systems
01/27/1998US5712864 Photonic diplex transceiver
01/27/1998US5712716 Telecommunication system and method for wavelength-division multiplexing transmissions with a controlled separation of the outgoing channels and capable of determining the optical signal/noise ratio
01/27/1998US5712475 Light receiving circuit with variable threshold circuit
01/27/1998CA2055274C Optical communication system with a fiber-optic amplifier
01/22/1998WO1998002898A1 Amplified sensor arrays
01/22/1998DE19700682A1 Optische Add/Drop-Schaltung mit Lichtleitergitter Optical add / drop circuit having optical fiber grating
01/22/1998DE19629408A1 Vorrichtung zur drahtlosen Kommunikation mit einem Mobiltelefon An apparatus for wireless communication with a mobile telephone
01/21/1998EP0820166A2 Optical transmission system and optical branching apparatus
01/21/1998EP0820162A2 Optical signal communication apparatus and optical signal communication method
01/21/1998EP0820161A2 Optical interference measurement method and system
01/21/1998EP0820127A1 Arrangement for reducing insertion loss impairment of optical amplifiers
01/21/1998EP0819344A1 Optical network and arrangement and method in such network
01/21/1998EP0819260A1 Multi-wavelength filtering device using optical fiber bragg grating
01/21/1998EP0717897B1 System and method for quantum cryptography
01/21/1998EP0611504B1 Sagnac interferometer based secured communication system
01/21/1998EP0533843B1 Tunable light source and fibre optical systems with tunable light source
01/21/1998CN1171178A Hybrid fiber/coaxial video and telephony communication system
01/20/1998US5710671 Optical system
01/20/1998US5710659 For amplifying an information signal
01/20/1998US5710653 Linear multi-output optical transmitter system
01/20/1998US5710652 Laser communication transceiver and system
01/20/1998US5710651 Remote millimeter-wave antenna fiber optic communication system using dual optical signal with millimeter-wave beat frequency
01/20/1998US5710649 Apparatus and methods for nulling non-random timing jitter in the transmission of digital optical signals
01/20/1998US5710648 Optical communication system and remote sensor interrogation
01/20/1998US5710623 Point-type radio controller using infared rays
01/20/1998CA2112596C Non-linear optical interferometer with saturated amplifier
01/20/1998CA2008900C Optical fiber microcellular mobile radio
01/15/1998WO1998001781A1 Dispersion compensating waveguide for optical transmission systems
01/15/1998WO1998001777A2 Fiber optic system with simultaneous switching and raman
01/15/1998DE19628321C1 Multiplex method for two sub=carriers
01/15/1998CA2259546A1 Dispersion compensating waveguide for optical transmission systems
01/15/1998CA2230686A1 Fiber optic system with simultaneous switching and raman
01/14/1998EP0818897A2 Light branching and insertion apparatus and optical transmission system having light branching and insertion apparatus
01/14/1998EP0818896A1 Optical data transmission system in soliton format
01/14/1998EP0818895A2 Optically amplifying transmission system
01/14/1998EP0818894A2 Optical signal tranmsitting apparatus and optical transmission system having such an optical signal transmitting apparatus
01/14/1998EP0818859A1 Wavelength monitoring and control assembly for WDM optical transmission systems
01/14/1998EP0818091A1 Dark pulse generation and transmission
01/14/1998EP0818089A1 Optical node in an optical bus network
01/14/1998EP0818088A1 Optical pre-amplifier
01/14/1998EP0817983A1 Substrate system for optoelectronic/microwave circuits
01/14/1998EP0632941B1 Optical receiver
01/14/1998CN1170485A Optical add drop multiplex
01/14/1998CN1170286A Signal light outputting apparatus and optical transmission system having signal light outputting apparatus
01/14/1998CN1170143A Light branching and insertion apparatus and optical transmission system having light branching and insertion apparatus
01/13/1998US5708753 Method of recovering from a fiber-cable cut using random splicing reconnection
01/13/1998US5708745 Device for preventing laser beam leakage