Simplified Universal Dispersion Curves for Graded-Index Planar Waveguides Based on the WKB Method

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

6 Scopus Citations
View graph of relations


Related Research Unit(s)


Original languageEnglish
Pages (from-to)158-162
Journal / PublicationJournal of Lightwave Technology
Issue number2
Publication statusPublished - Feb 1995


A new way of normalizing the WKB equation for graded-index optical planar waveguides is presented. It is found that the normalized propagation constant for the guided mode of a waveguide depends only on a single parameter, called the normalized mode order. For each profile shape, the new normalized WKB equation allows a single universal dispersion curve to be obtained that applies to all guided modes under all operating conditions. Examples are given for a number of practical profile shapes. The present approach provides a particularly simple description of the dispersion characteristics of graded-index optical waveguides. © 1995 IEEE. All rights reserved