All-Optical Half-Adder Circuit Based on Beam Interference Principle of Photonic Crystal

Abstract

Now a day's photonic crystals (PhCs) are in trends for designing of various integrated circuits like combinational and sequential circuits. The designing of all-optical half adder circuit based on beam interference principle, using T-shaped square lattice with silica dielectric rods in air background, is proposed. This design is a combination of two structures: one part of it works as AND gate and other part works as XOR gate. This structure is simulated using finite difference time domain (FDTD) method and verified numerically using PWE band solver and also using MATLAB.