Large-dynamic-range fiber loop ringdown strain sensor using Frequency-shifted Interferometry
Large-dynamic-range fiber loop ringdown strain sensor using Frequency-shifted Interferometry
复制标题
使用频移干涉测量法的大动态范围光纤环衰荡应变传感器
DOI：
10.1007/s11082-021-02962-4
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发表时间：
2021-06
影响因子：
3
通讯作者：
Yiwen Ou
中科院分区：
文献类型：
--
作者：
Chunfu Cheng;Jiaxuan Chen;Zehao Chen;Yiwen Ou
提出了一种基于频移干涉技术的光纤环形衰荡传感器，并进行了实验验证。采用FSI技术实现了空间域FLRD传感，仅需连续光源和慢速检测，大大降低了传感系统的成本。采用锥形多模光纤作为大应变测量的传感头。通过测量衰荡距离，监测应变，获得0.34 km− 1 m ε− 1的高应变灵敏度，对应于48.2 μ m的应变检测极限。得益于多模光纤良好的机械强度，实现了高达5 mε的动态范围。实验结果表明，FSI-FLRD应变传感器具有成本低、灵敏度高、稳定性好等优点，适用于混凝土结构的健康监测。
A fiber loop ringdown (FLRD) sensor combined with frequency-shifted interferometry (FSI) for large strain measurement was proposed and experimentally demonstrated. The FSI technique was employed to realize the space-domain FLRD sensing in which only continuous-wave light source and slow detection were required, and thus the sensing system cost were greatly reduced. A tapered multimode fiber was used as the sensor head for large strain measurement. By measuring the ringdown distance, the strain was monitored and a high strain sensitivity of 0.34 km−1mε−1was obtained, corresponding to a strain detection limit of 48.2 μɛ. As a benefit from good mechanical strength of multimode fiber, a dynamic range of up to 5 mε was achieved. The experimental results support that the proposed FSI-FLRD strain sensor has advantages of low cost, high sensitivity and good stability, which is suitable for health monitoring of concrete structures.
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影响因子：
4.7
作者：
A. Lopez-Aldaba;J. Auguste;R. Jamier;P. Roy;M. López-Amo
通讯作者：
A. Lopez-Aldaba;J. Auguste;R. Jamier;P. Roy;M. López-Amo
影响因子：
3.6
作者：
Huang, Wenzhu;Zhang, Wentao;Li, Fang
通讯作者：
Li, Fang
影响因子：
1.9
作者：
Hatta, Agus Muhamad;Semenova, Yuliya;Farrell, Gerald
通讯作者：
Farrell, Gerald
影响因子：
4.3
作者：
Qiu, Huiye;Qiu, Yishen;Li, Gaoming
通讯作者：
Li, Gaoming
影响因子：
4.6
作者：
Biswas, P.;Bandyopadhyay, S.;Dasgupta, K.
通讯作者：
Dasgupta, K.