Leaky modes on a dielectric waveguide: orthogonality and excitation

Because they are not proper spectral modes, leaky modes do not obey the usual power orthogonality relations for an ideal waveguide. Two methods for circumventing this problem are presented in this paper. One approach is to use the fact that weakly leaky modes are approximately power orthogonal withi...

Full description

Saved in:
Bibliographic Details
Published in:Applied optics (2004) 1976-04, Vol.15 (4), p.1040-1044
Main Authors: Sammut, R, Snyder, A W
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Because they are not proper spectral modes, leaky modes do not obey the usual power orthogonality relations for an ideal waveguide. Two methods for circumventing this problem are presented in this paper. One approach is to use the fact that weakly leaky modes are approximately power orthogonal within a restricted region of space to define a new set of slightly coupled modes. The other is to abandon power orthogonality in favor of a more general, mathematically exact orthogonality relation. The relative merits of these two approaches are discussed.
ISSN:1559-128X
DOI:10.1364/AO.15.001040