Paper
26 September 2007 Investigation of radiation-induced photodarkening in passive erbium-, ytterbium-, and Yb/Er co-doped optical fibers
B. P. Fox, K. Simmons-Potter, J. H. Simmons, W. J. Thomes Jr., R. P. Bambha, D. A. V. Kliner
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Abstract
The deployment of optical fibers in adverse radiation environments, such as those encountered in a low-Earth-orbit space setting, makes critical the development of an understanding of the effect of large accumulated ionizing-radiation doses on optical components and systems. In particular, gamma radiation is known to considerably affect the performance of optical components by inducing absorbing centers in the materials. Such radiation is present both as primary background radiation and as secondary radiation induced by proton collisions with space-craft material. This paper examines the effects of gamma radiation on erbium-, ytterbium-, and Yb/Er co-doped optical fibers by exposing a suite of such fibers to radiation from a Co-60 source over long periods of time while monitoring the temporal and spectral decrease in transmittance of a reference signal. For same total doses, results show increased photodarkening in erbium-doped fibers relative to ytterbium-doped fibers, as well as significant radiation resistance of the co-doped fibers over wavelengths of 1.0 - 1.6 microns. All three types of fibers were seen to exhibit dose-rate dependences.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. P. Fox, K. Simmons-Potter, J. H. Simmons, W. J. Thomes Jr., R. P. Bambha, and D. A. V. Kliner "Investigation of radiation-induced photodarkening in passive erbium-, ytterbium-, and Yb/Er co-doped optical fibers", Proc. SPIE 6713, Nanophotonics and Macrophotonics for Space Environments, 67130R (26 September 2007); https://doi.org/10.1117/12.735212
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Cited by 3 scholarly publications.
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KEYWORDS
Optical fibers

Transmittance

Ocean optics

Gamma radiation

Absorption

Silicon

Resistance

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