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Optical Engineering

Analysis of the evanescent field coupling between a fiber and a planar waveguide using the explicit finite difference method with a nonuniform mesh
Author(s): R. Mahendra Prabhu; Ananth Selvarajan
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Paper Abstract

We investigate an optical waveguide system consisting of an unclad fiber core suspended at a constant distance parallel to the surface of a planar waveguide. The coupling and propagation of light in the combined system is studied using the three-dimensional explicit finite difference beam propagation method with a nonuniform mesh configuration. The power loss in the fiber and the field distribution in the waveguide are studied as a function of various parameters, such as index changes, index profile, and propagation distance, for the combined system.

Paper Details

PDF: 8 pages
Opt. Eng. 32(4) doi: 10.1117/12.61290
Published in: Optical Engineering Volume 32, Issue 4, April 1993

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