Characterization of Forbidden Band with 2d Square Lattice for Photonic Crystals

Two-dimensional square lattice for photonic crystal were consist of SIC,The numerical simulation TE and TM modes of the two-dimensional photonic crystals with characteristics by plane wave expansion method(PWM).The results that TE have better photonic band gap,At the same time,the silicon carbide design 2d square lattice for photonic crystal waveguide,the numerical simulation TE and TM modes of transmission characteristic and the waveguide with characteristics,the results that the waveguide TE constitute the electromagnetic wave to better communication,their photons forbidden band did not appear.Research provides theoretic basis theoretic basis for the photonic crystal waveguide devices.