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Conference Papers Year : 2011

Radiation effects on fiber amplifiers: design of radiation tolerant Yb/Er-based devices

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Abstract

Rare-earth doped optical fibers have been shown to be very sensitive to radiations, limiting the integration of fiber-based systems in space missions. In this paper, we present the characterization of two amplifiers based on a set of prototype active Erbium/Ytterbium codoped double clad fibers developed by Ixfiber SAS. One of these fibers has been codoped with cerium inside its core to enhance its radiation tolerance whereas the other is a classical phosphosilicate Er/Yb fiber. The two amplifiers based on these fibers have been exposed to γ-rays at a low dose rate (0.3 rad/s) and to doses up to 90 krad. Previous studies indicated that Er/Yb amplifiers using this type of fiber suffered significant degradation for cumulated dose above 5-10 krad. We observed, on the contrary, that with our radiation hardened fiber, the degradation of the fiber amplifier's output power can be limited to less than 30% after an exposure dose of ~90 krad.
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Dates and versions

ujm-00604763 , version 1 (29-06-2011)

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Sébastien Girard, A. Laurent, M. Vivona, C. Marcandella, T. Robin, et al.. Radiation effects on fiber amplifiers: design of radiation tolerant Yb/Er-based devices. Photonics West, Jan 2011, San Francisco, United States. pp.79142P, ⟨10.1117/12.875494⟩. ⟨ujm-00604763⟩
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