Three Input NAND Gate Using Semiconductor Optical Amplifier

Abstract

In this paper, we proposed All optical NAND gate using polarization rotation in semiconductor optical amplifier (SOA). We have used Gaussian pulse as a control pulse and simulated the results using MATLAB. The change of extinction ratio (ER) with control and amplified emission noise (ASE) factor is investigated numerically. High value ER shows a clear distinction between low and high state of information.