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Finite-element solution of planar arbitrarily anisotropic diffused optical waveguides

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3 Author(s)
M. Koshiba ; Hokkaido University, Sapporo, Japan ; H. Kumagami ; M. Suzuki

The finite-element method for propagation in planar anisotropic diffused optical waveguides with arbitrary permittivity tensor is presented. A Galerkin procedure has been introduced to the finite-element formulation, to study both the nonleaky and leaky surface waves. The complex propagation constants are determined as a function of frequency for possible modes of propagation. The accuracy of the method has been checked by calculating the nonleaky and leaky surface waves of Ti-diffused LiNbO3waveguides with Gaussian index profiles. The numerical results of Ti-diffused LiNbO3waveguides with dielectric overlays are also presented and the effects of dielectric overlays on the propagation characteristics for the nonleaky and leaky surface waves are examined.

Published in:

Journal of Lightwave Technology  (Volume:3 ,  Issue: 4 )