Proposal of a Cascade Photonic Crystal XOR Logic Gate for Optical Integrated Circuits with Investigation of Fabrication Error and Optical Power Changes

A compact and simple structure is designed to create an all-optical XOR logic gate using a two-dimensional, photonic crystal lattice. The was implemented three waveguides connected by two nano-resonators. plane wave expansion method used obtain the band gap finite-difference time-domain investigate behavior of electromagnetic field in structure. Examining high contrast ratio high-speed cascade, on chip, effects fabrication error changes input optical power showed that could be integrated circuits. data transfer rate cascade were respectively obtained as 44.29 dB 1.5 Tb/s. In addition, had very small dimensions at 158.65 μm2 required low operate, which made it suitable for low-power This also NOT gate. Therefore, XNOR can gates.