Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/98304
Type: Artigo de periódico
Title: Perturbation Theory For The Wave Equation And The 'effective Refractive Index' Approach.
Author: Frateschi Newton C.
De Castro A.Rubens B.
Abstract: An Au and Aharonov type perturbation theory for the two-dimensional scalar wave equation is described. As an application, it is shown that the 'effective refractive index' method is related to the first-order correction to the eigenstate. In addition, the authors compare results obtained for the gain G in a typical laser structure using either the present theory or averaging the imaginary part of the refractive index over the fields ('average modal gain' G OVER BAR ). The results agree to about 8% in a test case where the perturbative result is, in fact, exact. It is concluded that the perturbative approach will, in general, be more reliable.
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Rights: fechado
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Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0022561871&partnerID=40&md5=80f554c8f1fcf4db7c6db563c2d81f56
Date Issue: 1986
Appears in Collections:Unicamp - Artigos e Outros Documentos

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