ESTIMATION OF INFLUENCE OF OPTICAL SIGNAL NON-LINEAR DISTORTIONS ON QUALITY PARAMETERS OF OPTICAL FIBER SYSTEM

Abstract

The article investigates the signal transmisson process in the optical propagation medium with non-linear distortion. To solve this problem was used a simulation MatLab model of single-channel coherent fiber communication system. Modeling of the propagation medium was carried out by split-step Fourier method. For example, the dependence of Q-factor from parameters of the system for transmission speeds of 10.7 Gb/s (OTU2) and 43,01 Gb/s (OTU3) was obtained. It is shown that increase in transmitter signal power from -13 dBm to +7 dBm reduces Q-factor of about 30 dB regardless of the number of track sections. Increasing the quantity of optical sections from 1 to 10 leads to a decrease in Q-factor of 15-20 dB.