A two-dimensional square-lattice photonic crystal with rotated square cylinders and cross thin plates exhibiting wide photonic bandgap

摘要

A new type of two-dimensional square-lattice photonic crystal structure made of rotated square cylinders and cross thin plates is presented and numerically investigated using the plane-wave expansion method. The largest absolute photonic bandgap (APBG) reaches 14.3%. The proposed structure can have promising application for its large APBG and convenience in designing optical circuits.