Design of PhC-based Demultiplexers With the Ability to Enabling, Suitable for Optical Communication Systems

In this paper a method is proposed for enabling a two-dimensional PhC-based demultiplexer. The structure used in this paper is composed of cylindrical dielectric material immersed in the air with cubic lattice. For this purpose, a photonic crystal based demultiplexer is designed. The proposed mechanism for wavelength selecting is a resonant defect. For realizing this aim, a destructive combination of two light beams is used. Two numerical methods, PWE and FDTD, are employed in the simulations. The first one is used for extracting band structures and the second one is used for studying the optical properties of the proposed device.