Thin-film-based optical fiber Fabry-Perot interferometer used for humidity sensing

被引：18

作者：

Peng, Jiankun ^{[1
,2
]}

Qu, Yapeng ^{[1
]}

Wang, Weijia ^{[1
]}

Sun, Tengpeng ^{[1
]}

Yang, Minghong ^{[1
,2
]}

机构：

[1] Wuhan Univ Technol, Natl Engn Lab Fiber Opt Sensing Technol, Wuhan 430070, Hubei, Peoples R China

[2] Wuhan Univ Technol, Key Lab Fiber Opt Sensing Technol & Informat Proc, Minist Educ, Wuhan, Hubei, Peoples R China

来源：

APPLIED OPTICS | 2018年 / 57卷 / 12期

关键词：

RELATIVE-HUMIDITY; EB-PVD; SENSOR; TEMPERATURE; SENSITIVITY; MICROSTRUCTURE; DEPOSITION; GROWTH; LASER; OXIDE;

D O I：

10.1364/AO.57.002967

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A thin-film-based optical fiber Fabry-Perot interferometer that consists of ZrO2 and SiO2 porous thin films is designed and fabricated by electron beam physical vapor deposition. Since the SiO2 porous thin film has the capability of water adsorption, the proposed Fabry-Perot interferometer is appropriate to detect humidity. Experimental results show that the prepared sensor has a humidity detection range from 0.06% RH to 70% RH. A cycling test shows that the humidity sensor has a responding or recover time of 4 s and good repeatability among different humidity environments. Especially, the proposed humidity sensor is insensitive to temperature variation and suitable for the detection of low relative humidity. (C) 2018 Optical Society of America

引用

页码：2967 / 2972

页数：6

共 36 条

[1] Effective refractive index and composition of oxidized porous silicon films [J].