Symmetric guided electromagnetic waves in a shielded slab filled with anisotropic dielectric

Abstract

In this paper we introduce a concept of symmetric guided electromagnetic waves. The waves are considered in a plane dielectric slab shielded with infinitely conducting walls. The permittivity of the slab is given by a real diagonal tensor with positive entries; the permeability is a constant scalar quantity. This concept includes cases of transverse-electric and transverse-magnetic guided waves as well as novel (more complicated) types of guided waves. The dispersion equation is found and its equivalence to the original problem is formulated. Numerical results are presented.