Scattering characteristics of dielectric periodic structures in the case of oblique incidence

The scattering characteristics of dielectric periodic structures in the general case of oblique incidence are investigated using a method that combines multimode network theory with a rigorous mode matching method. Some interesting wave phenomena are observed. It is demonstrated that the method is suitable for rigorously solving the electromagnetic scattering problems of the dielectric periodic structures and therefore lays a sound foundation for further research on accurately analyzing the wave phenomena and effectively designing the related periodic structures in MMW and optical integrated circuits.