Spectrally Resolved Transmission Loss in Gamma Irradiated Yb-Doped Optical Fibers

Yb 3+ -doped silicate fibers are commonly employed in optical systems utilizing fiber lasers and amplifiers. Deployment of such materials and systems in space-based and other adverse radiation environments requires knowledge of their response to fluxes of ionizing radiation. This paper reports the r...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 2008-06, Vol.44 (6), p.581-586
Main Authors: Fox, B.P., Schneider, Z.V., Simmons-Potter, K., Thomes, W.J., Meister, D.C., Bambha, R.P., Kliner, D.A.V.
Format: Article
Language:English
Subjects:
Amplifiers
Dosage
Exposure
Fiber lasers
Fibers
Gamma irradiation
Ionizing radiation
Laser modes
Optical fiber amplifiers
Optical fiber losses
Optical fibers
Optical materials
photodarkening
Propagation losses
radiation effects
radiation-induced absorption
rare-earth doped fibers
Semiconductor optical amplifiers
Spectra
Stimulated emission
Transmission loss
Transmittance
Yb-doped fibers
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Summary:Yb 3+ -doped silicate fibers are commonly employed in optical systems utilizing fiber lasers and amplifiers. Deployment of such materials and systems in space-based and other adverse radiation environments requires knowledge of their response to fluxes of ionizing radiation. This paper reports the results of gamma radiation exposures on a suite of passive, modern, highly Yb 3+ -doped aluminosilicate fibers. Of interest are the effects of total dose and dose rate as well as the development of radiation-induced absorption across a broad spectral window (1.0-1.7 mum). Results indicate that these fibers exhibit reasonable radiation resistance to gamma exposures typical of a five-year low-Earth-orbit environment. Maximum transmittance losses of less than 10% in the 1.0-1.7-mum spectral region for total gamma exposures of 2-5 krad (Si) were observed. In addition, it was found that the dependence of transmittance on radiation dose generally followed a power law that was dependent on dose rate.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2008.919873