DOI

The fiber Bragg gratings (FBGs) inside photonic crystal fibers (PCFs) 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 paper, we monitor the radiation-induced Bragg wavelength shift (RI-BWS) of the punctual sensor and the radiation-induced attenuation in the fiber used for its inscription up to a dose of 1.5 MGy(SiO2). Even if we observe a RI-BWS 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.
Original languageEnglish
Title of host publication55th IEEE Nuclear and Space Radiation Effects Conference (NSREC)
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Pages120-124
Number of pages5
Volume66
Edition1
DOIs
Publication statusPublished - 1 Jan 2019
Event55th IEEE Nuclear and Space Radiation Effects Conference (NSREC) - Kona, HI
Duration: 16 Jul 201820 Jul 2018

Publication series

NameIEEE Transactions on Nuclear Science
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISSN (Print)0018-9499

Conference

Conference55th IEEE Nuclear and Space Radiation Effects Conference (NSREC)
Period16/07/1820/07/18

    Research areas

  • Fiber Bragg grating (FBG), photonic crystal fiber (PCF), pressure sensors, radiation effects

ID: 44187321