Title :
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
fDate :
3/1/1993 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
