Analysis of Lightwave Propagation in a Bent Waveguide by the Galerkin Method

Akihiro MARUTA

IEICE TRANSACTIONS on Electronics   Vol.E75-C    No.6    pp.736-740
Publication Date: 1992/06/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electromagnetic Theory
opto-electronics,  electromagnetics,  

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A simple method is developed to analyze a bent waveguide, which is described in the cylindrical coordinate system. By means of this method based on the Galerkin method, the sampling spacing can be chosen arbitrarily and it is possible to treat narrow beams. In addition we introduce the absorber using the graded lossy material. As this lossy absorber can remove the radiation wave from the bend, so we can use the finite computational window. The lightwaves propagating in the uniform bend of the slab waveguide and of the nonlinear slab waveguide are demonstrated.