Investigating the Noise Immunity Property of Electro Optic Modulator

Abstract

Chaotic optical signals can be utilized in secure encryption in optical communication systems. Chaos encryption of data is considered to provide higher levels of security than standard cryptographic techniques. Nonlinear system are not free of noise. Nonlinear optical systems like Electro-Optic modulator with an electronic feedback can produce chaotic response. So produced optical signals can be utilized in secure encryption in optical communication systems. Study of nonlinear system remains incomplete without coupling the deterministic system with stochastic process i.e. noise. The influence of noise on nonlinear dynamical system is a very important area of research as noise has a great impact on the evolution of dynamical systems. Here in this paper we have investigated the noise immunity property of Electro Optic modulator and come to know that the map can highly resist to noise. Time response, frequency domain analysis and entropy calculation are the tools those have been used here to check the noisy characteristics of the Electro Optic system.