Abstract

The attenuation characteristics of a metal-clad planar optical waveguide polarizer are computed by a modified finite-difference beam propagation method, taking into consideration the complex refractive indices of the metals used and the vector characteristics of the guided mode. Numerical results for practical optical waveguide refractive-index profiles such as the step and Gaussian distributions are presented. The method should find applications in the design of metal-clad optical waveguide polarizers and other lossy waveguide devices with arbitrary refractive-index profiles and can be easily expanded to three-dimensional cases.

© 1994 Optical Society of America

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