G. Tartarini et H. Renner, Efficient finite-element analysis of tilted open anisotropic optical channel waveguides, IEEE MICR G, 9(10), 1999, pp. 389-391
An iterative method to analyze open anisotropic dielectric waveguides with
arbitrary dielectric tensor epsilon double over bar such as tilted channel
waveguides is presented. The proposed beta formulation approach reduces sig
nificantly the computational resources compared to previously proposed othe
r choices.