Title :
Effect of Grating Fabrication on Radiation Sensitivity of Fiber Bragg Gratings in Gamma Radiation Field
Author :
Lin, Song ; Song, Ningfang ; Jin, Jing ; Wang, Xueqin ; Yang, Gongliu
Author_Institution :
Inst. of Opto-Electron. Technol., Beijing Univ. of Aeronaut. & Astronaut. (BUAA), Beijing, China
Abstract :
The influence of grating fabrication on radiation sensitivity of the FBGs has been investigated experimentally. The FBGs were fabricated in different process and GeO2 concentrations. Pre-irradiation and H2-loading were applied to change the radiation sensitivity of the FBGs. The FBGs were fabricated in photosensitive fiber and coupling single mode fiber with a GeO2 concentration in a range from 0.33 to 23 mol%. The lowest Bragg wavelength shift (13 pm) was obtained by a grating written in photosensitive fiber PSF-GeB-125, with pre-irradiation and without H2-loading for a total dose of about 50 kGy.
Keywords :
Bragg gratings; gamma-rays; optical fibres; radiation effects; FBG; GeO2 concentration; H2-loading; PSF-GeB-125; coupling single mode fiber; fiber Bragg gratings; gamma radiation field; grating fabrication effect; lowest Bragg wavelength shift; photosensitive fiber; radiation sensitivity; Fiber gratings; Gratings; Radiation effects; Sensitivity; Temperature measurement; Temperature sensors; Fiber Bragg grating; gamma radiation; grating fabrication; radiation effect;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2011.2160205
