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

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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Communication dans un congrès
Photonics West, Jan 2011, San Francisco, United States. 7914, pp.79142P, 2011, 〈10.1117/12.875494〉
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Contributeur : Youcef Ouerdane <>
Soumis le : mercredi 29 juin 2011 - 16:07:36
Dernière modification le : lundi 15 octobre 2018 - 15:46:02

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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. 7914, pp.79142P, 2011, 〈10.1117/12.875494〉. 〈ujm-00604763〉

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