HIGH-SPEED DIGITAL OPTICAL SIGNAL TRANSMISSION LINE Russian patent published in 2000 - IPC

FIELD: quantum radio engineering and optical communication, applicable in equipment of fiber-optic, laser space, atmospheric and other communication lines. SUBSTANCE: transmission line has an amplifier-modulator, laser, laser power stabilizer, two matching devices, optical signal transmitting medium, photodetector, video amplifier, automatic gain control, optimal filter, solver, clock frequency recovery device. The concept of the claimed invention is in the fact that additionally cut in the known transmission line are a multifrequency resonator, multifrequency filter, N demodulators, N modulators, 2N bandpass filters of the channel and carriers, oscillator, frequency multiplier, three adders, delay line, attenuator which provide for suppression of noise of the first amplifier stages in a wide band of frequencies of the transmitted signal, thereby increasing the energy potential and length of the transmission line. As compared with the immediate analogues, the transmission line has a higher energy potential by 6 to 15 dB, which makes it possible to increase the length of the regeneration section of intrazone main and city communication networks. EFFECT: reduced noise and enhanced energy potential. 4 dwg