A Novel Proposal for an All-Optical “and” Logic Gate Using Two-Dimensional Photonic Crystals

Abstract

We present a novel proposal for an all-optical AND logic gate. It is designed based on line and point defects in two-dimensional photonic crystal (PC) rods in air with square lattice. Material of the rods is silicon with dielectric constant 11.56. Dimension of the proposed device is equal to 12.155×12.155 μm. The device elaborated has a simple structure consisting of two inputs – a main output and two idler outputs. Bit rate of the device is equal to 3·10¹² bit/s. Maximum contrast ratio is 5.84 dB. It is a good candidate for optical integrated circuits.