A Yee's mesh based modesolver for anisotropic waveguides

Abstract

This work presents a full vectorial Yee's mesh based modesolver for anisotropic waveguides with five term Hermitian permittivity tensor and interpolation to compensate for the non-collocation of electric fields. The earlier anisotropic modesolvers with non diagonal permittivity tensor use simple finite difference, finite element or plane wave method for mode solving, also the earlier works on Yee's mesh based modesolver do not consider five term permittivity tensor. However in this work five term hermitian permittivity tensor along with electric field interpolation has been incorporated in Yee's mesh based modesolver and effective refractive index values have been shown as well as compared with previous work.