All-optical basic gates and XOR gate using SOA based Mach-zehnder Interferometer

All-optical digital devices are key components for advanced signal processing in next generation optical networks and optical computing. In most digital systems, photonic integrated circuits are required to carry out high-speed energy efficient functionalities. In this paper a new and alternative method for designing all optical XOR gate and all basic gates AND, OR, NOT gates are demonstrated using Semiconductor optical amplifier (SOA) based Mach-Zehnder Interferometer (MZI) and it plays a significant role in the field of ultra fast all-optical signal processing, here the non linear properties of the SOA are properly utilized, they can exhibit a strong change of the refractive index together with high gain. The experimental results are exactly matched with standard results.