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Accurate analysis of power coupling between two arbitrarily ended dielectric slab waveguides by the boundary-element
Dao Ngoc Chien1, Kazuo Tanaka, Masahiro Tanaka
1Department of Electronics and Computer Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan. chien@tnk.info.gifu-u.ac.jp
Abstract:
The boundary integral equations that are called guided-mode extracted integral equations are applied to the investigation of the power-coupling-properties between two arbitrarily ended dielectric slab waveguides. The integral equations derived in this paper can be solved by the conventional boundary-element method. The reflection and coupling coefficients of the guided wave, as well as the scattering power, are calculated numerically for the case of incident TE guided-mode waves. The results presented are checked by the energy conservation law and the reciprocity theorem. Numerical results are presented for several geometries of coupling, including systems with three-layered symmetrical and asymmetrical slab waveguides.
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