An optical fiber humidity sensor based on optical absorption

被引:0
|
作者
Wang, Biao [1 ]
Zhang, Fujun [1 ,2 ]
Pang, Fufei [1 ]
Wang, Tingyun [1 ]
机构
[1] Shanghai Univ, Sch Commun & Informat Engn, Key Lab Specialty Fiber Opt & Opt Access Networks, 149 Yanchang Rd, Shanghai 200072, Peoples R China
[2] Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China
关键词
cobalt chloride; sol-gel; spin coating; humidity sensor;
D O I
暂无
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
A simple optical fiber relative humidity (RH) sensor was proposed and demonstrated. The humidity sensor was fabricated by coating moisture-sensitive film on the end face of a multi-mode optical fiber. The film was synthesized by doping CoCl2 into a PY A/SiO2 composite solution. Based on an optical absorption technique, the sensor head was characterized. From the optical absorption, a relative humidity range of 25%similar to 65% was detected. Furthermore, the sensor has good repetitive response, and the response time was less than 2 min.
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页数:6
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