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Optical Engineering

Asymptotic approximation and first-order correction of coupled-wave equations
Author(s): Claudio Oliveira Egalon; A. Martin Buoncristiani; Robert S. Rogowski
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Paper Abstract

A reformulation of the asymptotic solution of the coupledmode equations with a periodic variation of the refractive index along the propagation length is presented. A first-order correction using the asymptotic solution and Piccard’s method are also determined. It is found that the first-order solution compares very well with the numerical solution throughout a wide range of coupling parameters. The key differences between the method presented here and elsewhere reside in the derivation of the asymptotic solution as well as in the carefull derivation of the higher order corrections.

Paper Details

Date Published: 1 July 1997
PDF: 5 pages
Opt. Eng. 36(7) doi: 10.1117/1.601399
Published in: Optical Engineering Volume 36, Issue 7
Show Author Affiliations
Claudio Oliveira Egalon, NASA Langley Research Ctr. (United States)
A. Martin Buoncristiani, Christopher Newport Univ. (United States)
Robert S. Rogowski, NASA Langley Research Ctr. (United States)


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