Wide-range OFDR strain sensor based on the femtosecond-laser-inscribed weak fiber Bragg grating array

被引：17

作者：

Fu, Cailing ^{[1
,2
]}

Sui, Ronglong ^{[1
,2
]}

Peng, Zhenwei ^{[1
,2
]}

Meng, Yanjie ^{[1
,2
]}

Zhong, Huajian ^{[1
]}

Shan, Rongyi ^{[1
,2
]}

Liang, Wenfa ^{[1
,2
]}

Liao, Changrui ^{[1
,2
]}

Yin, Xiaoyu ^{[1
,2
]}

Wang, Yiping ^{[1
,2
,3
]}

机构：

[1] Shenzhen Univ, Guangdong & Hong Kong Joint Res Ctr Opt Fiber Sens, Shenzhen Key Lab Photon Devices & Sensing Syst Int, State Key Lab Radio Frequency Heterogeneous Integr, Shenzhen 518060, Peoples R China

[2] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen Key Lab Ultrafast Laser Micro Nano Mfg, Key Lab Optoelect Devices & Syst,Minist Educ Guang, Shenzhen 518060, Peoples R China

[3] Guangdong Lab Artificial Intelligence & Digital Ec, Shenzhen 518107, Peoples R China

来源：

OPTICS LETTERS | 2023年 / 48卷 / 21期

基金：

中国国家自然科学基金;

关键词：

PHASE;

D O I：

10.1364/OL.504763

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A wide-range OFDR strain sensor was demonstrated based on femtosecond-laser-inscribed weak fiber Bragg grating (WFBG) array in standard SMF. A WFBG array consisting of 110 identical WFBGs was successfully fabricated along a 56 cm-long SMF. Compared with SMF, the cross-correlation coefficient of WFBG array was improved to 0.9 under the strain of 10,000 mu epsilon. The position deviation under the strain of 10,000 mu epsilon, i.e., 2.5 mm, could be accurately obtained and compensated simply by using peak finding algorithm. The maximum measurable strain of single-and multi-point strain sensing was up to 10,000 mu epsilon without using any additional algorithms, where the sensing spatial resolution was 5 mm.(c) 2023 Optica Publishing Group

引用

页码：5819 / 5822

页数：4

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