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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 16, Iss. 1 — Jan. 1, 1991
  • pp: 27–29

Attenuation of incoherent infrared radiation in hollow sapphire and silica waveguides

Steven J. Saggese, James A. Harrington, and George H. Sigel, Jr  »View Author Affiliations


Optics Letters, Vol. 16, Issue 1, pp. 27-29 (1991)
http://dx.doi.org/10.1364/OL.16.000027


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Abstract

The attenuation of incoherent infrared radiation for wavelengths from 6 to 20 μm was investigated for hollow sapphire and silica waveguides suitable for applications in spectroscopy and thermometry. A low-attenuation region was exhibited between 9.6 and 17.2 μm for hollow sapphire fibers and between 7.25 and 9.5 μm for hollow silica fibers as a result of the cladding index of refraction dipping below that of the air core (n ≈ 1). Losses have been characterized as a function of fiber diameter, launch conditions, and waveguide bend radius for cladding regions of both n > 1 and n < 1. In addition, the remote infrared sensing capability of the hollow waveguides was demonstrated by the detection of CO2 in N2 by utilizing hollow sapphire fibers capped with ZnSe windows.

© 1991 Optical Society of America

History
Original Manuscript: August 21, 1990
Revised Manuscript: November 1, 1990
Manuscript Accepted: October 10, 1990
Published: January 1, 1991

Citation
Steven J. Saggese, James A. Harrington, and George H. Sigel, "Attenuation of incoherent infrared radiation in hollow sapphire and silica waveguides," Opt. Lett. 16, 27-29 (1991)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-16-1-27

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