Smartphone-Based Interrogation of a Chirped FBG Strain Sensor Inscribed in a Multimode Fiber
Smartphone-Based Interrogation of a Chirped FBG Strain Sensor Inscribed in a Multimode Fiber
复制标题
基于智能手机的多模光纤啁啾FBG应变传感器解调
DOI：
10.1109/jlt.2020.3024713
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发表时间：
2021-01-01
影响因子：
4.7
通讯作者：
Ushakov, Nikolai A.
中科院分区：
文献类型：
--
作者：
Markvart, Aleksandr A.;Liokumovich, Leonid B.;Ushakov, Nikolai A.
基于智能手机的光纤布拉格光栅传感器的询问，据我们所知，首次报道。智能手机闪光灯LED用作光源，并且透射衍射光栅将CFBG光谱投射在智能手机相机上。为了将来自智能手机LED的光有效地耦合到具有CFBG的光纤，多模光纤用于刻写。审讯设置由智能手机和低成本的现成可用组件组成。通过施加纵向力引起的光纤应变来说明测量原理。通过与商用光谱仪和基于Cramer-Rao方法的理论结果的比较，验证了所获得的测量灵敏度和分辨率。此外，据我们所知，模式噪声对基于智能手机的光纤传感器询问系统性能的影响被认为是第一次。
Smartphone-based interrogation of a fiber Bragg grating sensor is, to the best of our knowledge, reported for the first time. The smartphone flashlight LED was used as a light source and a transmissive diffraction grating projected the CFBG spectra on the smartphone camera. In order to efficiently couple light from the smartphone LED to the fiber with CFBG, multimode fiber was used for inscription. Interrogation setup consists of a smartphone and low-cost off-the-shelf available components. Measurement principle was illustrated through the fiber strain caused by applied longitudinal force. Attained measurement sensitivity and resolution were validated via comparison with commercial spectrometer and theoretical results based on Cramer-Rao approach. Also, to the best of our knowledge, the influence of modal noise on the smartphone-based fiber optic sensor interrogation system performance is considered for the first time.