Radiation-Induced Effects on Fiber Bragg Gratings inscribed in Highly Birefringent Photonic Crystal Fiber - Archive ouverte HAL Access content directly
Journal Articles IEEE Transactions on Nuclear Science Year : 2018

Radiation-Induced Effects on Fiber Bragg Gratings inscribed in Highly Birefringent Photonic Crystal Fiber

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Abstract

The Fiber Bragg Gratings (FBGs) inside Photonic Crystal Fibers having high fiber birefringence, such as in PCF with butterfly shape microstructure, are characterized by two Bragg peaks. The spectral distance between these two peaks is not affected by a change of temperature or by a longitudinally applied strain, but this spectral separation evolves when the sensor is subjected to a transversal strain. This makes such FBGs inscribed in highly birefringent PCFs very interesting for structural health monitoring of civil structures, as well as for operation in harsh environments such as the ones associated with the nuclear industry. In this work, we monitor the Radiation-Induced Bragg Wavelength Shift (RI-BWS) of the punctual sensor and the Radiation-Induced Attenuation (RIA) in the fiber used for its inscription up to a dose of 1.5 MGy(SiO2). Even if we observe a RIBWS for both Bragg peaks, the spectral distance between them only slightly evolves, of less than 10 pm. These gratings are then very promising sensors for the structural health monitoring of nuclear facilities
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Dates and versions

ujm-01964629 , version 1 (22-12-2018)

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A. Morana, T. Baghdasaryan, S. Girard, E. Marin, T. Geernaert, et al.. Radiation-Induced Effects on Fiber Bragg Gratings inscribed in Highly Birefringent Photonic Crystal Fiber. IEEE Transactions on Nuclear Science, 2018, pp.1-1. ⟨10.1109/TNS.2018.2886167⟩. ⟨ujm-01964629⟩
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