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Proceedings Paper

Low-OH all-silica fiber with broadband transparency and radiation resistance in the UV region
Author(s): Valery Kh. Khalilov; Karl-Friedrich Klein; Gary W. Nelson
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Paper Abstract

New step-index all-silica fibers with high-transparency in the whole spectral region from DUV (200nm) to IR (2200 nm) will be introduced. The light-guiding core-material consists of high-purity silica, especially with low-OH content of less than 10 ppm. In UV region, the losses are mainly influenced by Rayleigh scattering and electronic transitions leading to the Urbach-tail. On the other hand, the losses in the IR region are limited by traces of OH-groups (in the order of approx. 2 ppm) and fundamental vibration-bands. The fibers possess high resistance against UV radiation in spectral region of interest, which is comparable to high-OH all-silica fibers specially developed for UV-application below 250 nm. The properties of the new fiber in respect to basic attenuation and spectral damage in the UV-region will be discussed, in comparison to high-OH fibers, based on the same measurement-technique.

Paper Details

Date Published: 10 June 2004
PDF: 8 pages
Proc. SPIE 5317, Optical Fibers and Sensors for Medical Applications IV, (10 June 2004); doi: 10.1117/12.540732
Show Author Affiliations
Valery Kh. Khalilov, Polymicro Technologies, LLC (United States)
Karl-Friedrich Klein, Fachhochschule Giessen-Friedberg (Germany)
Gary W. Nelson, Polymicro Technologies, LLC (United States)


Published in SPIE Proceedings Vol. 5317:
Optical Fibers and Sensors for Medical Applications IV
Israel Gannot, Editor(s)

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