Article ID Journal Published Year Pages File Type
1541191 Optics Communications 2008 6 Pages PDF
Abstract

This paper derives a new approximation for the eigenmodes of a planar waveguide. The approximation is uniformly valid at both the high and low frequency regions of the dispersion relation. It is shown that a Pade approximation of the frequency equation leads to very accurate solutions. The new approximate solution is used to compute the frequency spectrum and the results compared with the exact analytical solution. The solutions presented here are ideal for analytically studying transient wave fields by means of modal summation.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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