Effect of kGy Dose Level Gamma Radiation on Ge-doped FBGs and Femtosecond-Laser-Inscribed Pure-Silica-Core FBGs

被引：0
|
作者：
Xu, Yang [1 ]
Ma, Lin [1 ]
Jiang, Shoulin [1 ]
He, Zuyuan [1 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China
来源：
2017 16TH INTERNATIONAL CONFERENCE ON OPTICAL COMMUNICATIONS & NETWORKS (ICOCN 2017) | 2017年
基金：
中国国家自然科学基金;
关键词：
fiber Bragg grating; gamma radiation; optical fiber sensor; Bragg wavelength shift; radiation effect; FIBER BRAGG GRATINGS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The effect of gamma radiation with a maximum dose of 180 kGy at a dose rate of 10.15 kGy/hour on both standard Ge-doped fiber Bragg Gratings (Ge-FBG) and femtosecond-laser-inscribed pure-silica-core fiber Bragg Gratings (FL-PS-FBG) have been investigated. In the case of Ge-FBGs, a maximum Bragg wavelength shifts (BWS) of 140 pm and a decrease of the reflection peak power of 16 dB has been observed. The observed large peak power change was resulted from radiation induced loss and do not dependent on the temperature variation which make it a good candidate for radiation dosimetry applications. On the other hand, FL-PS-FBGs exhibit good radiation resistance characteristics and the observed maximum radiation induced BWS and the decrease of the reflection peak power is as small as 40 pm and 1 dB, respectively, which make it suitable for temperature sensing applications in high dose radiation environment.
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页数：3
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