Finite element approach for the modal analysis of open-boundarywaveguides |
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Authors: | Hernandez-Figueroa HE Fernandez FA Davies JB |
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Institution: | Dept. of Electron. & Electr. Eng., Univ. Coll. London; |
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Abstract: | A general finite element approach to computing the modes of open-boundary waveguides is presented. This efficient and robust scheme applies equally to situations with real and complex propagation constants. By using a localised boundary impedance condition, the approach preserves the sparsity of the global matrices. A comparison with the well established infinite element technique and the analysis of a 2-D leaky optical structure are given as examples |
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