Design and Analysis of All-Optical Universal Logic Gates Using 2D Silicon Photonic Crystal Structures

Abstract

With the continuous increase in the demand for higher computational speeds, photonics-based Integrated Circuits (ICs) are becoming more vital for future computational technologies. For designing Photonic ICs there is a requirement to have logic gates that can work in all-optical domain. The proposed work presents the design and numerical analysis of All-Optical universal logic gates including NAND, NOR, and NOT gates that are realized using 2-D Silicon periodic nanophotonic structures through light beam interference-effect. 2D Photonic crystals through photonic bandgap optimization, make it possible to reduce the losses incorporated during the propagation of light. The structures are designed to operate at 1.55 µm. The present work demonstrates an unpretentious but effective approach for designing the all-optical universal logic gates. The design has shown good transmission efficiency for all the input combinations of the logic gates and thus can be used to design other forms of logic gates and circuits, further.