Title :
Radiation effects on fiber Bragg grating temperature sensors written in a Ge-doped core silica
Author :
Jongyeol Kim ; Namho Lee ; Hyunkyu Jung ; Youngwoong Kim ; Wontaek Han
Author_Institution :
Korea Atomic Energy Res. Inst. (KAERI), Daejeon, South Korea
fDate :
Oct. 27 2013-Nov. 2 2013
Abstract :
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.
Keywords :
Bragg gratings; fibre optic sensors; gamma-ray effects; germanium; silicon compounds; temperature sensors; Bragg wavelength shift; Ge-doped core silica; SiO2:Ge; fiber Bragg grating; gamma-radiation; radiation effects; radiation-induced shift; temperature sensitivity; temperature sensors; Fiber gratings; Optical fiber sensors; Optical fibers; Radiation effects; Temperature measurement; Temperature sensors; Fiber Bragg gratings; gamma radiation; optical fiber sensor; radiation effects;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE
Conference_Location :
Seoul
Print_ISBN :
978-1-4799-0533-1
DOI :
10.1109/NSSMIC.2013.6829720
