Effect of gamma-neutron nuclear reactor radiation on the properties of Bragg gratings written in photosensitive Ge-doped optical fiber

A. Gusarov, A. Fernandez Fernandez, S. Vasiliev, O. Medvedkov, M. Blondel, F. Berghmans

    Research outputpeer-review

    Abstract

    We have experimentally studied the effect of mixed gamma-neutron nuclear reactor radiation on the effective refractive index of Bragg gratings fabricated in Ge-doped photosensitive optical fiber. We compared the effect of radiation on gratings written with and without hydrogen sensitization and show that the use of hydrogen loading results in an increase of the sensitivity to reactor radiation. Neither grating annealing at 500 °C nor pre-irradiation of the fiber results in a significant increase of the radiation hardness of the Bragg gratings. The best radiation stability is observed for gratings fabricated without hydrogen loading.

    Original languageEnglish
    Pages (from-to)79-86
    Number of pages8
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume187
    Issue number1
    DOIs
    StatePublished - Jan 2002

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Instrumentation

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