Analysis of propagation characteristics of whispering gallery modes in a dielectric disk or a curved rectangular dielectric waveguide

Author

Yamamoto, Toshio ; Koshiba, Masanori

Author_Institution

Olympus Opt. Co. Ltd., Tokyo, Japan

Volume

11

Issue

3

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

400

Lastpage

404

Abstract

The finite-element method is applied to the analysis of whispering gallery modes in curved optical waveguides. Numerical examples for whispering gallery modes in a dielectric disk with rough boundaries are given. It is demonstrated that the whispering gallery modes and the normal guided modes in a curved rectangular dielectric waveguide are analyzed consistently with this approach, and that the normal guided mode approaches the whispering gallery mode with the increase of waveguide width. The minimum width of the rectangular waveguide needed to support a whispering gallery mode is evaluated.

Keywords

finite element analysis; optical waveguide theory; rectangular waveguides; curved optical waveguides; curved rectangular dielectric waveguide; dielectric disk; finite-element method; propagation characteristics; rough boundaries; whispering gallery modes; Dielectrics; Finite element methods; Laser modes; Microoptics; Optical propagation; Optical waveguides; Rectangular waveguides; Ring lasers; Senior members; Whispering gallery modes;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.219571

Filename

219571