6-MeV Electron Exposure Effects on OFDR-Based Distributed Fiber-Based Sensors

Abstract : The impact of exposing an optical fiber to 6-MeV electrons on the performances of optical frequency domain reflectometry (OFDR) distributed sensors is investigated. Six different types of optical fibers with different core compositions and coatings have been tested: four fibers are metal coated (copper, gold, or aluminum) for high-temperature >300 °C) operations while the two others have telecom-grade acrylate coatings for operation below 80 °C. The fiber Rayleigh signature used to perform the OFDR sensing remains almost unaffected after an electron exposure. Indeed, the measured radiation-induced temperature errors are lower than about 3 °C, close to the setup uncertainties, when the OFDR operates as a temperature sensor.
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Camille Sabatier, Serena Rizzolo, Adriana Morana, Timothé Allanche, Thierry Robin, et al.. 6-MeV Electron Exposure Effects on OFDR-Based Distributed Fiber-Based Sensors. IEEE Transactions on Nuclear Science, Institute of Electrical and Electronics Engineers, 2018, 65 (8), pp.1598-1603. ⟨10.1109/TNS.2018.2804663⟩. ⟨ujm-01926003⟩

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