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Proceedings Paper

Temperature and dose-rate effects in gamma irradiated rare-earth doped fibers
Author(s): B. P. Fox; K. Simmons-Potter; W. J. Thomes Jr.; D. C. Meister; R. P. Bambha; D. A. V. Kliner
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Paper Abstract

Rare-earth-doped fibers, such as Er3+- and Yb3+-doped aluminosilicates can be advantageous in space-based systems due to their stability, their high-bandwidth transmission properties and their lightweight, small-volume properties. In such environments the effect of ionizing-radiation on the optical transmission of these fibers is of paramount importance. For the present work, gamma-radiation experiments were conducted in which un-pumped Yb3+ and Er3+ doped sample fibers were irradiated with a Cobalt-60 source under different dose-rate and temperature conditions. In-situ spectral transmittance data over the near IR was monitored during the irradiations for total doses of up to tens of krad (Si). It was found that there was a dose-rate dependence in which higher rates resulted in more photodarkening. Higher temperatures were not found to significantly affect the rate of photodarkening at the dose rates used.

Paper Details

Date Published: 26 August 2008
PDF: 8 pages
Proc. SPIE 7095, Nanophotonics and Macrophotonics for Space Environments II, 70950B (26 August 2008); doi: 10.1117/12.795595
Show Author Affiliations
B. P. Fox, Univ. of Arizona (United States)
K. Simmons-Potter, Univ. of Arizona (United States)
W. J. Thomes Jr., NASA Goddard Space Flight Ctr. (United States)
D. C. Meister, Sandia National Labs. (United States)
R. P. Bambha, Sandia National Labs. (United States)
D. A. V. Kliner, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 7095:
Nanophotonics and Macrophotonics for Space Environments II
Edward W. Taylor; David A. Cardimona, Editor(s)

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