All-optical 3-bit Parity Checker on PhC platform

Abstract

 In the past few decades, research on all-optical logic devices has been in demand for high-speed computing and loss-less communications. In this article, a 3-bit odd parity checker is proposed with T-shaped photonic crystal waveguide based XOR gate. The T-shaped waveguide is created over a photonic crystal by inserting line and point defects. The proposed design is simulated using FDTD method which shows a calculated contrast ratio of 27.48 dB with a response time in picoseconds as it is all-optical domain.