Temperature and dose-rate effects in gamma irradiated rare-earth doped fibers

B. P. Fox; K. Simmons-Potter; W. J. Thomes Jr.; D. C. Meister; R. P. Bambha; D. A. V. Kliner

doi:10.1117/12.795595

26 August 2008 Temperature and dose-rate effects in gamma irradiated rare-earth doped fibers

B. P. Fox, K. Simmons-Potter, W. J. Thomes Jr., D. C. Meister, R. P. Bambha, D. A. V. Kliner

Proceedings Volume 7095, Nanophotonics and Macrophotonics for Space Environments II; 70950B (2008) https://doi.org/10.1117/12.795595
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

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.

Citation Download Citation

B. P. Fox, K. Simmons-Potter, W. J. Thomes Jr., D. C. Meister, R. P. Bambha, and D. A. V. Kliner "Temperature and dose-rate effects in gamma irradiated rare-earth doped fibers", Proc. SPIE 7095, Nanophotonics and Macrophotonics for Space Environments II, 70950B (26 August 2008); https://doi.org/10.1117/12.795595

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