Analysis of coupled anisotropic optical waveguides

Abstract

In this paper, a semi-analytical method based on a Fourier expansion technique and transmission line modeling is applied to the full-wave modal analysis of coupled optical waveguides. By the use of this method, mode field distributions and effective indices of even and odd modes of some typical anisotropic coupled optical waveguides are determined. Moreover, the effect of crystal orientation on the coupling length of an anisotropic parallel rib waveguide coupler is investigated.