FIBER OPTIC TRANSMISSION SYSTEM WITH NON-LINEAR SIGNAL JUMP NOISE REDUCTION

摘要

P The invention proposes, in a long-distance transmission system, to increase the signal-to-noise ratio by noise filtering (1) outside the wavelength range of the signals transmitted, - offset ( 2) in wavelength the signals transmitted, and filtering of the transmitted signals (5) having undergone the wavelength shift. The wavelengths of the signals can be shifted by widening the spectrum of the signals, or by optical phase conjugation. /P