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Proceedings Paper

10.6-um TEM00 beam transmission characteristics of a hollow circular cross-section multimode waveguide
Author(s): Richard Michael Jenkins; R. W. J. Devereux
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Paper Abstract

The first direct measurements of a periodic variation in the axially dependent transmission characteristic of a hollow circular cross-section waveguide are described. The experimental results are explained in terms of the excitation and propagation of the two lowest order EH1n modes. As these modes propagate along the waveguide, they run in and out of phase with one another, causing a periodic refocusing of the input beam. Midway between the refocusing points, intensity profiles of a 'doughnut' form are produced. It is proposed that these dramatic field variations produce an axially dependent variation in the waveguide attenuation coefficient, thus explaining the experimental results.

Paper Details

Date Published: 1 September 1991
PDF: 8 pages
Proc. SPIE 1512, Infrared and Optoelectronic Materials and Devices, (1 September 1991); doi: 10.1117/12.47175
Show Author Affiliations
Richard Michael Jenkins, Royal Signals and Radar Establishment (United Kingdom)
R. W. J. Devereux, Royal Signals and Radar Establishment (United Kingdom)


Published in SPIE Proceedings Vol. 1512:
Infrared and Optoelectronic Materials and Devices
Ahmed Naumaan; Carlo Corsi; Joseph M. Baixeras; Alain J. Kreisler, Editor(s)

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