Electronics Letters · 1982 · 72 citations · 0 references
EngineeringElectrical EngineeringMaterials ScienceFinite Element AnalysisFinite Element MethodsOpticsAnisotropic MaterialsAnisotropic MediaAnisotropy AnalysisFinite Element FormulationOptical WaveguidesWaveguidesAnisotropic WaveguidesOptical Waveguide SimulationPermittivity TensorSlab WaveguidesWaveguide ModesWaveguide Modes In Anisotropic MediaWaveguide SimulationWaveguide Theory
An approximate scalar finite-element program for the analysis of anisotropic optical waveguides with a diagonal permittivity tensor is described. The accuracy of the method has been checked by calculating the eigenmodes of two-dimensional, anisotropic asymmetric slab waveguides. The results obtained for a channel waveguide embedded in LiNbO3 agree well with the results of the earlier vectorial finite-element method.