Abstract

The equivalent-step-index fiber method rests on the concept that properties of the fundamental mode are not very sensitive to refractive-index profile details. We show how this idea may be incorporated into the original mathematical scheme of Snyder and Sammut [ J. Opt. Soc. Am. 69, 1663 ( 1979)] in order to simplify greatly the calculations and to provide wavelength-independent equivalent step-index parameters. The new approach uses the effective waveguide parameter and the moments of the profile-shape function.

© 1984 Optical Society of America

Gaussian and equivalent-step-index approximations for nonlinear waveguides

R. A. Sammut and C. Pask
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4 × 4 Matrix formalisms for optics in stratified anisotropic media

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