Implementação Numérica de um Processador Digital de Sinais para Sistemas Ópticos baseados na Modulação DP-QPSK

Abstract

The efficient transmission of information in an optical system is associated with several factors like as the choice of equipment (like as optical fiber, transponders and amplifiers, for example) and general characteristics of the system (power and transmission rate, number of channels per fiber and modulation format, for example). Each of these factors impacts the system differently and affects each other performance, making the project of an efficient optical system complex. This work makes a general study of optical systems DWDM and the modulation techniques usually employed in in order to implement numerically a Digital Signal Processing (DSP) for optical systems that transmit at high rates such as 100 Gbps with Dual Polarization Quadrature Phase Shift Keying (DP-QPSK) modulation. In this context, it is proposed to implement a DSP based on commonly used techniques and, later then, to add new techniques to do new experiments in order to analyse both implementation’s efficiency.