SUBSCRIBER OPTICAL COMMUNICATION LINE Russian patent published in 2003 - IPC

FIELD: quantum radio engineering and optical communications. SUBSTANCE: line has multiplexer, demultiplexer, modulator, two optical splitters, two optical splitting filters (spectral channel multiplexing devices), two optical-signal transmission media, photodetector, amplifier, signal filter, resolver, and also newly introduced coherent optical transmitter and receiver, laser heterodyne, frequency stabilizer that also functions to ensure narrow radiation line of laser, optical splitter-amplifier, third optical-signal transmission medium, two optical splitters, asymmetric optical splitter, optical modulator, optical-carrier signal shaper, subcarrier signal generator, and mixer. EFFECT: reduced optical wavelength band occupied by one line. 1 cl, 2 dwg