A fiber Fabry-Perot interferometer based on a PVA coating for humidity measurement

被引：78

作者：

Su, Dan ^{[1
]}

Qiao, Xueguang ^{[1
]}

Rong, Qiangzhou ^{[1
]}

Sun, Hao ^{[1
]}

Zhang, Jing ^{[1
]}

Bai, Zhengyuan ^{[2
]}

Du, Yanying ^{[1
]}

Feng, Dingyi ^{[1
]}

Wang, Yupeng ^{[1
]}

Hu, Manli ^{[1
]}

Feng, Zhongyao ^{[1
]}

机构：

[1] Northwest Univ, Dept Phys, Xian 710069, Shaanxi, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Lasers, Shanghai 201800, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2014年 / 311卷

基金：

中国国家自然科学基金;

关键词：

Fiber sensor; Fabry-Perot interferometer; Polyvinyl alcohol film; SENSOR; SENSITIVITY; FILM; GEL;

D O I：

10.1016/j.optcom.2013.08.016

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A fiber Fabry-Perot interferometer (FPI) for humidity measurement based on a Polyvinyl alcohol (PVA) film is proposed and experimentally demonstrated. This FPI is fabricated by coating a PVA film on the ending face of a Single-mode fiber (SMF) to form a Fabry-Perot cavity. A well-confined interference spectrum with a free spectra range (FSR) of 15 nm is obtained. Several saturated salt solutions are employed to obtain the different humidity environments in the inclosed containers, of which the relative humidity values range from 7% RH to 91.2% RI-I. The proposed FPI sensor is sensitive to the humidity change, and a sensitivity of 0.07 nm/(1%) is obtained. Therefore, the characteristics of compact size, low cost and simple fabrication identify it a good candidate for environment monitoring application. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：107 / 110

页数：4

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