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Proceedings Paper

Transmission Properties Of Circular Dielectric-Coated Metallic Waveguides For Infrared Transmission
Author(s): Mitsunobu Miyagi; Kazuhide Harada; Yoshizo Aizawa; Shojiro Kawakami
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Paper Abstract

Several kinds of dielectric-coated metallic waveguides such as germanium-coated nickel or silicon-coated aluminum hollow waveguides are fabricated by using a method based on rf sputtering, plating, and etching techniques. Transmission losses of 0.34 dB/m are achieved for straight waveguides at 10.6 μm. Measurements of bending losses of several kinds of hollow waveguides are conducted, which reveal that dielectric-coated metallic waveguides have smaller bending losses than conventional metallic waveguides. Edge-guided modes or whispering gallery modes in circular metallic waveguides are also observed. A design theory for reducing bending losses of circular dielectric-coated waveguides has been presented by using a new theory' different from that used previously.2 Theoretical and experimental results have been compared.

Paper Details

Date Published: 16 October 1984
PDF: 7 pages
Proc. SPIE 0484, Infrared Optical Materials and Fibers III, (16 October 1984); doi: 10.1117/12.943152
Show Author Affiliations
Mitsunobu Miyagi, Tohoku University (Japan)
Kazuhide Harada, Tohoku University (Japan)
Yoshizo Aizawa, Tohoku University (Japan)
Shojiro Kawakami, Tohoku University (Japan)

Published in SPIE Proceedings Vol. 0484:
Infrared Optical Materials and Fibers III
Paul Klocek, Editor(s)

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