Análisis y evaluación de parámetros de eficiencia de la señal en un sistema de transmisión sobre fibra óptica utilizando modulación QAM y empleando optisystem.

Abstract

The need for an optical communications system to be optimal in improving its performance efficiency over time is acknowledged. Different modulations have been used with these systems; the objective of this research was to analyze and evaluate the efficiency parameters of a signal in a simulation scheme of an optical communications system. The methodology used to analyze and assess the different efficiency parameters of a signal involved conducting simulations of an optical communications system using QAM modulation based on a diagram designed in OptiSystem software with its various tools. The analyzed signal travels from a transmitter to a receiver, considering a medium whose distance will vary likewise the type of optical fiber considered, in this case for long distances, is single-mode due to its transmission efficiency over long distances. This step was carried out to analyze eye diagrams, bit error rate, threshold, and signal quality factor at reception, which are the results of this work. These results have been satisfactory as each graph shows the different performance values of the signal with the variations in QAM modulation, with better signal performance depending on the distance in some cases. In conclusion, this work has shown that the digital signal should be treated according to the service for which it will be used, as in QAM modulation, higher spectral efficiency is offered when using a higher order such as 64-QAM compared to a lower order, at the cost of increased sensitivity to noise.