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Proceedings Paper

Whispering-Mode Waveguide
Author(s): N. A. Kurnit
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Paper Abstract

Properties of a relatively new type of waveguide structure of potential use for confining infrared radiation to a small mode volume over long path lengths are reviewed. A single guiding surface with curvature radius p and bend radius R allows propagation of a near-grazing incidence "whispering mode" of transverse width ≈ (λρR/π)1/2 and radial width ≈ 1/2 (λ2R)1/3. For sufficiently large p, the loss per revolution for TE-mode propagation is π AN, where AN is the normal-incidence reflection loss. Results on a number of prototype structures in general agreement with these considerations are described.

Paper Details

Date Published: 30 December 1981
PDF: 12 pages
Proc. SPIE 0288, Los Alamos Conf on Optics '81, (30 December 1981); doi: 10.1117/12.932035
Show Author Affiliations
N. A. Kurnit, University of California (United States)

Published in SPIE Proceedings Vol. 0288:
Los Alamos Conf on Optics '81
Donald H. Liebenberg, Editor(s)

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