Optical cascaded Fabry-Perot interferometer hydrogen sensor based on vernier effect

被引：86
作者：
Li, Yina [1 ]
Zhao, Chunliu [1 ]
Xu, Ben [1 ]
Wang, Dongning [1 ]
Yang, Minghong [2 ]
机构：
[1] China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China
[2] Wuhan Univ Technol, China Natl Engn Lab Fiber Opt Sensing Technol, Wuhan 430070, Hubei, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2018年 / 414卷
关键词：
Hydrogen sensor; Cascaded Fabry-Perot interferometer; Vernier effect; Temperature; COMPOSITE FILM; FIBER; SENSITIVITY; PRESSURE;
D O I：
10.1016/j.optcom.2017.12.012
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An optical cascaded Fabry-Perot interferometer hydrogen sensor based on vernier effect has been proposed and achieved. The proposed sensor, which total length is similar to 594 mu m, is composed of a segment of large mode area fiber (LMAF) and a segment of hollow-core fiber (HCF). The proposed sensor is coated with the Pt-loaded WO3/SiO2 powder which will result in the increase of local temperature of the sensor head when exposed to hydrogen atmosphere. Thus the hydrogen sensor can be achieved by monitoring the change of resonant envelope wavelength. The hydrogen sensitivity is -1.04 nm/% within the range of 0 % -2.4 % which is greatly improved because of the vernier effect. The response time is similar to 80 s. Due to its compact configuration, the proposed sensor provides a feasible and miniature structure to achieve detection of hydrogen. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：166 / 171
页数：6
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