Radiation effects on fiber Bragg grating temperature sensors written in a Ge-doped core silica

We measured the Bragg wavelength shift (BWS) of a fiber Bragg grating (FBG), which was inscribed in four different commercial Ge-doped fibers exposed to gamma-radiation up to a dose of 16.3 kGy at the same Bragg wavelength and evaluated the change of full width at half maximum (FWHM) and FBG tempera...

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Bibliographic Details
Published in2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC) pp. 1 - 4
Main Authors Jongyeol Kim, Namho Lee, Hyunkyu Jung, Youngwoong Kim, Wontaek Han
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2013
Subjects
Fiber Bragg gratings
Fiber gratings
gamma radiation
optical fiber sensor
Optical fiber sensors
Optical fibers
Radiation effects
Temperature measurement
Temperature sensors
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Summary:We measured the Bragg wavelength shift (BWS) of a fiber Bragg grating (FBG), which was inscribed in four different commercial Ge-doped fibers exposed to gamma-radiation up to a dose of 16.3 kGy at the same Bragg wavelength and evaluated the change of full width at half maximum (FWHM) and FBG temperature sensitivity after irradiation. A radiation-induced shift of the Bragg wavelength was clearly observed during irradiation. Moreover, we confirmed that the FBG temperature sensitivity was distinctly decreased after irradiation.
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2013.6829720