Refractive Index Sensor Based on Double Side-Polished U-Shaped Plastic Optical Fiber

被引：31
|
作者：
Wang, Shumin [1 ]
Zhang, Daming [1 ]
Xu, Yan [1 ]
Sun, Siwen [1 ]
Sun, Xiaoqiang [1 ]
机构：
[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
来源：
SENSORS | 2020年 / 20卷 / 18期
基金：
中国国家自然科学基金;
关键词：
plastic optical fiber; U-shaped; side polish; sensor;
D O I：
10.3390/s20185253
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A U-shaped double-side polished plastic optical fiber (POF) is demonstrated as a liquid refractive index (RI) sensor. The refractive index of glycerinum solutions is identified by the intensity detection on the bending and evanescent wave loss change. Heat treatment and mechanical polishing are adopted to form the symmetrical side-polished POF probe. The processing parameters are experimentally optimized on the power transmittance. The sensitivity of 1541%/RIU (Refractive Index Unit) can be obtained with a resolution of 5.35 x 10(-4)in the scope of 1.33-1.39. The favorable temperature characteristic is proved to offer stable RI sensing from 20 to 50 degrees C. This simple POF sensor has potentials in low-cost visible light intensity RI detection.
引用
收藏
页码：1 / 13
页数：13
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