Analysis and simulation of two dimensional photonic crystal cavity

The two dimensional photonic crystal cavities are simulated using Ansoft HFSS. Some significant parameters and factors that affect the characteristics of photonic crystal cavity, including the spatial structure of the inserted rods, the permittivity of dielectric rods, the radii and distance of rods etc, are analyzed. At the same time, the general discipline is summarized. The results show that when the radii of the dielectric rods increase, the frequency of the same mode will increase, and in the high order mode, it has a minimal value when the rod radius is 0.4 mm. When the permittivities of dielectric rods increase, the number of regular modes decrease. Further more, there is no fundamental mode which is important for using high order mode only. Considering only the change of the distan