Reflection properties from dielectric grating structures containing photonic crystal grating

The scattered electromagnetic wave from two dimensional dielectric grating structure containing photonic crystal grating (PCG) is analyzed by using the Method of Moments (MoM). PCG is assumed to consist of the dielectric cylinders. Numerical results show the effect of depth of grating, relative permittivity, and dielectric cylinders on reflectance for three kinds of the structure. We think that PCG analyzed in this paper is useful for the design of frequency filter.