Gamma and UV Radiation-Induced Color Centers in Optical Fibers

Abstract : Radiation-induced losses and paramagnetic centers were investigated in phosphorusdoped and P-free multimode germanosilicate optical fibers after g-rays (~1 MeV) and ultraviolet (5 eV) exposures. After both types of irradiation, the same defects seem to be responsible of the fiber absorption in the spectral range 400 to 1650 nm. In particular, the P1 centers and the Phosphorus Oxygen Hole centers are created in both cases in the phosphorus-doped fibers and explain the high permanent radiation-induced attenuation levels observed in this fiber type. Luminescence and electron spin resonance measurements (77 K, ~9.38 GHz) on irradiated samples confirm that the GeE', SiE' and NBOHC defects are also generated in the different irradiated samples. From this study, it seems that the pertinence of a multimode fiber for nuclear space or civil applications could be estimated through low-cost ultraviolet measurements.
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https://hal-ujm.archives-ouvertes.fr/ujm-00369249
Contributor : Youcef Ouerdane <>
Submitted on : Wednesday, March 18, 2009 - 6:51:07 PM
Last modification on : Wednesday, July 25, 2018 - 2:05:31 PM

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Sébastien Girard, E. Régnier, A. Boukenter, Y. Ouerdane, J.-P. Meunier, et al.. Gamma and UV Radiation-Induced Color Centers in Optical Fibers. Materials Science Forum, Trans Tech Publications Inc., 2005, 480-481, pp.323-328. ⟨ujm-00369249⟩

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