Design and Implementation of Optical Demultiplexer by Using Photonic Crystal in Silicon on Insulator System

We are presenting the details of the modeling and designing of the optical demultiplexer by using photonic crystals in silicon on insulator system. For this purpose, the band diagram and light propagation inside the photonic crystals are modeled. An effective index is defined for light propagation inside the photonic crystal structure, which reduces the computation time significantly. An eight-channel demultiplexer with 200 GHz channel spacing is designed.