FIELD: information technologies.
SUBSTANCE: invention includes a fibre optic line of information transfer, lasers with various lengths of radiation waves, a multiplexer, a fibre line, an optical amplifier, a demultiplexer, photodetectors, paraphase amplifiers, differential amplifiers, optical couplers and an inverting amplifier. A feature of the invention is, in particular, generation of a summary signal of constant power arriving to the optical amplifier (OA) from information optical signals.
EFFECT: elimination of non-linear distortion and cross noise occurring in an optical amplifier, which makes it possible to use analogue modulation of signals in a fibre optic communication line or to increase quality of digital information signals.
2 cl, 2 dwg
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