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Applied Optics

Applied Optics


  • Editor: Glenn D. Boreman
  • Vol. 44, Iss. 30 — Oct. 20, 2005
  • pp: 6449–6455

Infrared transmissive, hollow plastic waveguides with inner Ag–AgI coatings

Roshan George and James A. Harrington  »View Author Affiliations

Applied Optics, Vol. 44, Issue 30, pp. 6449-6455 (2005)

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Hollow polycarbonate waveguides with thin-film coatings of Ag–AgI were fabricated by liquid-phase chemistry methods. These hollow waveguides, which have bore sizes ranging from 500 to 2000 μm and lengths as long as 2 m, are transmissive from 2 to more than 20 μm. The lowest loss of 0.02 dB/m was obtained for a straight 2000 μm bore guide at 10.6 μm. This is to our knowledge the lowest loss measured for any IR fiber at CO2 laser wavelengths. The bending losses were found to increase as 1/R, where R is the radius of the bend. These waveguides were able to withstand 18 W of CO2 laser input power for bore sizes greater than 1000 μm.

© 2005 Optical Society of America

OCIS Codes
(060.2390) Fiber optics and optical communications : Fiber optics, infrared
(160.4760) Materials : Optical properties
(310.6860) Thin films : Thin films, optical properties

ToC Category:

Original Manuscript: April 6, 2005
Manuscript Accepted: April 6, 2005
Published: October 20, 2005

Roshan George and James A. Harrington, "Infrared transmissive, hollow plastic waveguides with inner Ag–AgI coatings," Appl. Opt. 44, 6449-6455 (2005)

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