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Analysis of optical waveguide discontinuities

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2 Author(s)
Rahman, B.M.A. ; Dept. of Electron. & Electr. Eng., Univ. Coll., London, UK ; Davies, J.B.

A novel approach for analyzing discontinuity problems in optical waveguides is presented. The method is a combination of the vector-finite-element method and the least-squares boundary residual method. The vector-H-field-finite-element method is capable of providing accurate eigenvalues and eigenvectors for a wide range of optical waveguide problems, including arbitrary shape, arbitrary index distribution, and anisotropic materials. The least-squares boundary residual method matches the continuity of tangential fields in the least-squares sense, taking into account many modes at the discontinuity plane, to give the general scattering matrix. A few results are presented to show the usefulness of the approach

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Lightwave Technology, Journal of  (Volume:6 ,  Issue: 1 )