Full-optical Mach–Zehnder interferometer-based discrete Fourier transform

Abstract

From the last few decades, the discovery of ultrahigh-speed all-optical switches based on semiconductor optical amplifier (SOA), especially in interferometric configuration, is very pronouncing due to their high repetition rate, low power consumption, fast switching time, easily integrated, noise and tolerance and operationally versatile, which have brought the revolution in optical information processing fields. In this paper, all-optical computing tool SOA-based 2 × 2 full-optical Mach–Zehnder interferometer (MZI) is employed because it can be used to design more complex circuits and subsystems of enhanced combinational and sequential functionality. In this work, (a) the switching network with its two switching actions and (b) the all-optical 8 × 8 crossbar network architecture, i.e., a multistage cube network for N = 8, using MZI-based 2 × 2 optical crossbar switch for discrete Fourier transform are proposed. Numerical simulation of this work is done with OptiSystem v7.0 to achieve the performance of the proposed circuit.