Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › 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
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)
11/1991
11/10/1991CA2162185A1 Fault recovery system of a ring network
11/09/1991WO1991017474A1 Optical signal regenerator and optical communications system incorporating same
11/09/1991CA2082389A1 Optical signal regenerator and optical communications system incorporating same
11/07/1991DE4014396A1 Passive optical communications system for telecommunications network
11/06/1991EP0455144A2 An optical polarization modulator employing interferometric structures
11/06/1991EP0454926A2 Drop testing in fiber to the home systems
11/05/1991WO1991018432A2 Couplers for terminating optical fiber ends
11/05/1991US5063595 Optical communications network
11/05/1991US5063568 Wavelength stabilized light source
11/05/1991US5063567 Photoreceptor for frequency-modulated optical signals
11/05/1991US5063559 Optimized wavelength-division-multiplexed lightwave communication system
11/05/1991CA2081558A1 Couplers for terminating optical fiber ends
11/05/1991CA2041747A1 Passive optical telecommunication system
10/1991
10/31/1991WO1991016795A1 Remote control device
10/31/1991WO1991016746A1 Compensating circuit for high power lasers
10/31/1991WO1991016744A1 Analog compensation system for linear lasers
10/30/1991EP0454344A1 Interleaved receivers
10/30/1991EP0454165A2 New polymers, optical transmitting systems and optical members and their use
10/30/1991EP0453815A2 Methods of compensation of optical relaxation transients
10/30/1991CN1055847A 蜂窝状移动无线电系统 Cellular mobile radio system
10/29/1991US5062155 Modulated light wave demodulator
10/29/1991US5062154 Mid range UV communications
10/29/1991US5062152 Pcm signal coding
10/29/1991US5062151 Communication system
10/29/1991US5062150 Fiber-based free-space optical system
10/29/1991US5061859 Circuits for realizing an optical isolator
10/29/1991US5061027 Solder-bump attached optical interconnect structure utilizing holographic elements and method of making same
10/23/1991EP0452949A1 Control apparatus for transmitting I.R.
10/23/1991EP0452895A1 Optical communication network system and communication method using the same
10/23/1991EP0452669A1 Erbium doped fiber optical amplifier
10/23/1991EP0452650A2 Electronic gain cell
10/22/1991US5060312 Polarization independent coherent lightwave detection arrangement
10/22/1991US5060311 Method and apparatus for obtaining phase or polarization insensitive optical heterodyne reception for dpsk or ask-modulated transmission signal
10/22/1991US5060310 Apparatus and method for reduction of intermodulation distortion in an optical fiber network
10/22/1991US5060308 Firefighters mask communication system
10/22/1991US5060307 Apparatus and a method comprising an optical fiber modulator, coupler, switch, sensor and distribution system
10/22/1991US5060306 Optical transmisson system
10/22/1991US5060304 Alignment acquiring, optical beam communication link
10/22/1991US5060303 Optical data link system, and methods of constructing and utilizing same
10/22/1991US5060302 Automatic adjustment of optical power output of a plurality of optical transmitters
10/22/1991US5060301 Optical repeated transmission method and system
10/22/1991US5060225 Phase modulated optical carrier data link for a focal plane array
10/22/1991US5060224 Method and apparatus for connecting branch networks with a trunk network in optical transmission system
10/22/1991US5058976 System comprising Er-doped optical fiber
10/22/1991US5058974 Distributed amplification for lightwave transmission system
10/21/1991WO1991016773A1 Optical communications link fault signalling
10/17/1991WO1991015908A1 Ring communication system
10/17/1991WO1991015907A2 Bit and frame synchronizing unit for an access node in an optical transmission device
10/17/1991WO1991015906A1 Optical communications system
10/17/1991WO1991015903A1 Device for evaluating signal transmission performance of optical communication equipment
10/17/1991WO1991015795A1 Multi-bandgap dual function light emitting/detecting diode
10/17/1991WO1991015791A1 Fibre optic rotary joint
10/17/1991DE4011981A1 Electro=optical transmission device for electronic data - converts parallel data into serial stream fed along optical transmission path
10/16/1991EP0451843A2 Semiconductor device and method of manufacturing the same
10/16/1991EP0451748A2 Optical signal receiver
10/16/1991EP0451475A2 Integrated optical sensor arrangement
10/15/1991US5058206 Optical network in which the transmission, the joining and separation, as well as the routing of information and control signals take place in the optical domain
10/15/1991US5058103 Bidirectional optical transmission system having a light-interruption detecting function
10/15/1991US5058101 Coherent detection loop distribution system
10/15/1991US5056887 Optical mixing device
10/15/1991US5056235 Signal transmission system for machine tools, inspection machines, and the like
10/09/1991EP0450879A1 Ring communication system
10/09/1991EP0450603A2 Method and apparatus for light amplification exhibiting a flat gain spectrum
10/09/1991EP0450524A2 Optical transmission system with a fiber optic amplifier
10/09/1991EP0450385A1 Supply assembly of an amplifier for optical fibre
10/08/1991US5056111 Integrated terahertz electromagnetic wave system
10/08/1991US5055810 Ultra-high speed light activated microwave switch/modulation using photoreactive effect
10/08/1991US5054876 Optical fiber telecommunication line including amplifiers distributed along the line for the transmitted signals
10/08/1991US5054875 Fiber-optic equalizer
10/08/1991CA1290412C High frequency signal apparatus and method of forming same
10/08/1991CA1290411C High frequency signal driver and method of forming same
10/07/1991WO1991015789A1 Optical signal distribution network
10/04/1991WO1991015886A1 Thermal control for laser diode used in outside plant communications terminal
10/04/1991CA2093439A1 Thermal control for laser diode used in outside plant communications terminal
10/02/1991EP0449475A2 Telemetry for optical fiber amplifier repeater
10/02/1991EP0449474A2 Dc-coupled optical data link utilizing differential transmission
10/02/1991EP0449136A2 Optical time domain testing instrument
10/02/1991EP0448832A2 Automatic bias controller for electro-optic modulator
10/01/1991US5054050 Drop testing in fiber to the home systems
10/01/1991US5054044 Radiology installation with a communications network
10/01/1991US5053882 Video signal optical transmission system
10/01/1991CA1290019C Dual balanced optical signal receiver
09/1991
09/27/1991WO1991014963A1 Optical apparatus
09/26/1991DE4009477A1 IR remote control terminal e.g. for telephone - has stored information sets converted into transmitted remote control signals
09/25/1991EP0448293A1 Method of locating a fault
09/25/1991EP0447752A2 WDM optical communication with optical beams modulated by channel discrimination signals
09/25/1991EP0447439A1 Loss detection.
09/25/1991CN1054872A Digital interpolation circuitry
09/24/1991US5052051 Heterodyne receiver for coherent optical communication
09/24/1991US5051601 Electronic apparatus with light communication
09/24/1991US5051578 Self calibrating fiber optic sensor system with optimized throughput
09/24/1991US5050952 Optical communications system for diplex or duplex transmission
09/19/1991WO1991014323A1 Termination unit for a b-isdn subscriber line
09/19/1991WO1991014196A1 Device for producing optical delays and application to an optical control system of a sweep aerial
09/19/1991WO1991014193A1 Optical isolator
09/18/1991EP0446908A2 High speed opto-electronic crossbar switch
09/18/1991EP0446208A1 Language training.
09/18/1991CN1054692A Optical fiber link control safety system
09/18/1991CN1054670A Actire fibre optical amplifier, with double-core portions, having wide signal wavelength band
09/17/1991US5050239 Laser power supply and control device for a fiber optic link between a subscriber and a telecommunications central office
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