Fabrication and performance evaluation of reflectorless refractive index fiber optic sensors using etched enhanced backscattering fibers
Fabrication and performance evaluation of reflectorless refractive index fiber optic sensors using etched enhanced backscattering fibers
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DOI：
10.1016/j.measurement.2020.108874
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发表时间：
2021-02-01
期刊：
影响因子：
5.6
通讯作者：
Tosi, D.
中科院分区：
文献类型：
--
作者：
Aitkulov, A.;Sypabekova, M.;Tosi, D.
我们提出并评估了一种基于蚀刻MgO基纳米颗粒掺杂光纤的光纤折射率（RI）传感器的制造和询问技术。所讨论的方法不需要将反射元件刻划到光纤中。相反，通过在蚀刻区中执行瑞利散射特征的互相关，由光纤反向散射的光可以给出检测所需的足够信息。传感器的性能使用分布式传感来监测，其允许询问沿光纤长度的沿着的几个点。比较了几种腐蚀光纤的灵敏度。已实现的最大灵敏度为45.95 nm/RIU（RI单位），并有可能实现温度补偿。
We propose and evaluate a technique for the fabrication and interrogation of fiber-optic refractive index (RI) sensors based on etched MgO-based nanoparticle doped fibers. The discussed method does not require to inscribe a reflective element into the fiber. Instead, light backscattered by the fiber can give sufficient information that is necessary for detection, by performing the cross-correlation of Rayleigh scatter signatures in the etched zones. The performance of the sensor is monitored using distributed sensing, which allows to interrogate several points along the length of the fiber. The sensitivities of several etched fibers are compared. The largest sensitivity that has been achieved is 45.95 nm/RIU (RI units), with the possibility of implementing temperature compensation.