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Modified Numerical Technique for Beam Propagation Method Based on the Galerkin's Technique
Guosheng PU Tetsuya MIZUMOTO Yoshiyuki NAITO
IEICE TRANSACTIONS on Electronics
Publication Date: 1994/03/25
Print ISSN: 0916-8516
Type of Manuscript: PAPER
modified FE-BPM, nonuniform sampling spacing, absorbing boundary, dielectric waveguide,
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A modified beam propagation method based on the Galerkin's technique (FE-BPM) has been implemented and applied to the analysis of optical beam propagation in a tapered dielectric waveguide. It is based on a new calculation procedure using non-uniform sampling spacings along the transverse coordinate. Comparison with a conventional FE-BPM shows a definite improvement in saving computation time. The differences of a propagation field and a mean square power given by the proposed FE-BPM are discussed in comparison with the conventional FE-BPM.