All optical EX-OR gate based on four wave mixing non linear effect in Semiconductor optical amplifier(SOA)

A novel approach towards the realization of all optical Ex-OR gate using all optical NOR gate, based on Semiconductor optical amplifier(SOA), has been presented in this paper, exploiting Four wave mixing(FWM), non linear effect in SOA's. The design and simulation of the circuit has been described with the help of Optiwave software version 7.0 and have been optimized by measuring the output at different values of input parameters like input optical power, injection current and active region length of SOA. Here, in this paper the optimized outpu has been presented. Several approaches have already been suggested for designing all optical logic gates which includes cross gain modulation (XGM), cross phase modulation (XPM) and Machzehender interferometer (MZI) structure etc. In this paper we will use the idea to generate FWM signals by keeping two data pumps(A and b) frequencies fixed at 193Thz and 193.1Thz respectively, which will generate the FWM at 193.2Thz.