Portable Multihole Plastic Optical Fiber Sensor for Liquid-Level and Refractive Index Monitoring

被引:17
作者
Ye, Yifan [1 ]
Zhao, Changjian [1 ]
Wang, Zhuo [1 ]
Teng, Chuanxin [2 ]
Marques, Carlos [3 ,4 ]
Min, Rui [1 ]
机构
[1] Beijing Normal Univ, Ctr Cognit & Neuroergon, State Key Lab Cognit Neurosci & Learning, Zhuhai 519087, Peoples R China
[2] Guilin Univ Elect Technol, Photon Res Ctr, Guilin 541004, Peoples R China
[3] Univ Aveiro, Inst Nanoestruturas Nanomodelacao & Nanofabricacao, P-3810193 Aveiro, Portugal
[4] Univ Aveiro, Dept Phys, P-3810193 Aveiro, Portugal
基金
中国国家自然科学基金;
关键词
Liquid level; microhole; plastic optical fiber (POF); refractive index (RI); smartphone; CHEMICAL SENSOR; TEMPERATURE; SMARTPHONE; SYSTEM;
D O I
10.1109/JSEN.2022.3228224
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this article, we report a low-cost method to fabricate plastic optical fiber (POF) liquid-level and refractive index (RI) sensors integrated with smartphones by molds and drilling microholes in side-growing POFs (SGPOFs) with high-temperature metal wire. These sensors can be used for real-time liquid-level and RI monitoring, especially under situations requiring portability and illumination. When the liquid level changes, the change of the RI around the microholes leads to a change in the light intensity transmitted in the fiber, enabling us to measure the liquid level and RI. Utilizing one sensorwith six holes (0.45mmradius and 15mm spacing) in 2.0-mm SGPOF, the results of level and RI measuring are in good agreement with the theory. The liquid-level measurement of the sensor is carried out for water with an RI of 1.333, the level sensitivity is 0.29%/cm +/- 0.02%/cm. In the RI measurement, the RI sensitivity of the sensor is -22.8%/RIU +/- 0.6%/RIU in the measurement range from 1.333 to 1.475.
引用
收藏
页码:2161 / 2168
页数:8
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