Title :
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
fDate :
10/1/1994 12:00:00 AM
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;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
