Three-dimensional analysis of coupled-cavity waveguides

Author

Vogel, M.

Author_Institution

Ansoft Corp., Pittsburgh, PA, USA

Volume

3

fYear

2003

fDate

22-27 June 2003

Firstpage

998

Abstract

For the design and analysis of coupled-cavity waveguides (CCW) and their coupling to ridge waveguides, a 2D analysis based on effective index of refraction is insufficient. The 3D finite-element analysis in this paper shows how the individual "defects" in the CCW radiate into space, and how this depends on dielectric thickness. Coupling with a dielectric waveguide was optimized for a CCW with three defects, but longer CCWs still had a large ripple in the pass band. Since CCWs consist of coupled resonators, they show similarities to Chebychev band-pass filters. Design techniques for such filters may be helpful to design CCWs.

Keywords

cavity resonators; coupled circuits; dielectric waveguides; finite element analysis; ridge waveguides; 3D finite-element analysis; CCW defects; Chebychev band-pass filters; coupled resonators; coupled-cavity waveguide 3D analysis; dielectric thickness; dielectric waveguide; pass band ripple; ridge waveguides; Couplings; Dielectric losses; Dielectric materials; Electromagnetic waveguides; Frequency; Integrated optics; Optical refraction; Optical resonators; Optical waveguides; Polarization;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2003. IEEE

Conference_Location

Columbus, OH, USA

Print_ISBN

0-7803-7846-6

Type

conf

DOI

10.1109/APS.2003.1220079

Filename

1220079