Modal analysis of quasi-guided waveguides by the finite element method with spatial transformations

Author

Passaro, Angelo ; Franco, Marcos A R ; Machado, José M. ; Cardoso, José R.

Author_Institution

Div. of Appl. Phys., Centro Tecnico Aeroespacial, Brazil

Volume

1

fYear

1999

fDate

1999

Firstpage

120

Abstract

This work presents an approach for the computation of resonant modes in quasi-guided waveguides by the finite element method. In this approach, a spatial transformation maps a large external domain, surrounding the guide core, onto a smaller domain containing the waveguide region. Only a few modifications of conventional finite element codes are required to apply the spatial transformation scheme, which can be used in the presence of material nonhomogeneities as well as anisotropies. A weakly guiding optical waveguide is analysed by this scheme and the modal solutions are compared to those obtained by the infinite element and the boundary impedance condition techniques

Keywords

finite element analysis; optical waveguide theory; boundary impedance condition techniques; finite element method; infinite element; large external domain; material nonhomogeneities; modal analysis; quasi-guided waveguides; resonant modes; spatial transformations; weakly guiding optical waveguide; Anisotropic magnetoresistance; Dielectric substrates; Electromagnetic waveguides; Finite element methods; Modal analysis; Optical refraction; Optical sensors; Optical variables control; Optical waveguides; Transmission line matrix methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Optoelectronics Conference, 1999. SBMO/IEEE MTT-S, APS and LEOS - IMOC '99. International

Conference_Location

Rio de Janeiro

Print_ISBN

0-7803-5807-4

Type

conf

DOI

10.1109/IMOC.1999.867070

Filename

867070