Infrared surface waves in circular hollow waveguides with small core diameters

Author

Vermeulen, F.E. ; Robinson, A.M. ; James, C.R. ; McMullin, J.N.

Author_Institution

Dept. of Electr. Eng., Alberta Univ., Edmonton, Alta., Canada

Volume

42

Issue

10

fYear

1994

fDate

10/1/1994 12:00:00 AM

Firstpage

1932

Lastpage

1938

Abstract

An asymptotic form of the characteristic equation that describes wave propagation at near-infrared wavelengths in small core hollow circular waveguides is developed. Analytic solutions for the transverse and axial propagation constants are obtained. These demonstrate the transition of the TE₁₁ and TM₀₁ modes to surface waves as the guide radius is increased to values much greater than at cutoff. Relative power density distributions illustrating these mode transitions are shown

Keywords

circular waveguides; laser beams; optical waveguide theory; optical waveguides; TE₁₁ modes; TM₀₁ modes; asymptotic form; axial propagation constants; characteristic equation; circular hollow waveguides; guide radius; infrared surface waves; near-infrared wavelengths; relative power density distributions; small core diameters; small core hollow circular waveguides; surface waves; transverse propagation constants; wave propagation; Attenuation; Equations; Hollow waveguides; Laser beam cutting; Laser modes; Laser transitions; Nickel; Optical attenuators; Propagation constant; Surface waves;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.320776

Filename

320776