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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


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.

Original languageEnglish (US)
Title of host publicationNanophotonics and Macrophotonics for Space Environments II
StatePublished - 2008
EventNanophotonics and Macrophotonics for Space Environments II - San Diego, CA, United States
Duration: Aug 11 2008Aug 12 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherNanophotonics and Macrophotonics for Space Environments II
Country/TerritoryUnited States
CitySan Diego, CA


  • Co-60 irradiation
  • Dose-rate dependence
  • Dose-rate effects
  • Gamma-radiation effects
  • Photodarkening
  • Radiation-induced absorption
  • Rare-earth doped fibers
  • Temperature effects

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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