Side-Polish Plastic Optical Fiber Based SPR Sensor for Refractive Index and Liquid-Level Sensing.

Side-Polish Plastic Optical Fiber Based SPR Sensor for Refractive Index and Liquid-Level Sensing.
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DOI:
10.3390/s22166241
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发表时间:
2022-08-19
期刊:
影响因子:
3.9
通讯作者:
Xue, Minmin
Xue, Minmin
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Teng, Chuanxin;Ying, Shiyuan;Min, Rui;Deng, Shijie;Deng, Hongchang;Chen, Ming;Chu, Xiaoxue;Yuan, Libo;Cheng, Yu;Xue, Minmin

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在这项工作中,提出并演示了一种简单的基于侧面抛光塑料光纤(POF)的表面等离子共振(SPR)传感器,用于同时测量折射率(RI)和液位。研究了侧面抛光深度对传感性能的影响。实验结果表明,SPR峰值波长会随着RI的变化而变化,SPR峰值强度会随着液位的变化而变化。通过监测峰值波长和强度的变化,可以同时检测RI和液位。实验结果表明,RI为1.39时,RI灵敏度可达200​​8.58 nm/RIU。该传感器具有结构简单、成本低廉等优点,在生化传感领域具有良好的前景。
In this work, a simple side-polish plastic optical fiber (POF)-based surface plasmon resonance (SPR) sensor is proposed and demonstrated for simultaneous measurement of refractive index (RI) and liquid level. The effects of side-polish depths on the sensing performance were studied. The experimental results show that the SPR peak wavelength will be changed as the RI changes, and the SPR peak intensity will be changed with the liquid level variation. By monitoring the changes in peak wavelength and intensity, the RI and liquid level can be detected simultaneously. Experimental results show that an RI sensitivity of 2008.58 nm/RIU can be reached at an RI of 1.39. This sensor has the advantages of simple structure and low cost, which has a good prospect in the field of biochemical sensing.
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