Enhanced sensitivity of fiber Bragg grating hydrogen sensor using flexible substrate

被引：40

作者：

Dai, Jixiang ^{[1
]}

Yang, Minghong ^{[1
,2
]}

Yang, Zhi ^{[1
]}

Li, Zhi ^{[1
]}

Wang, Yao ^{[1
]}

Wang, Gaopeng ^{[1
]}

Zhang, Yi ^{[3
]}

Zhuang, Zhi ^{[3
]}

机构：

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

[2] Wuhan Univ Technol, Key Lab Fiber Opt Sensing Technol & Informat Proc, Minist Educ, Wuhan 430070, Peoples R China

[3] China Acad Engn Phys, Inst Struct Mech, Mianyang 621900, Sichuan, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 196卷

基金：

美国国家科学基金会;

关键词：

Fiber Bragg grating; Hydrogen sensor; Enhanced sensitivity; Flexible substrate; OPTICAL-FIBER; COMPOSITE FILM; PALLADIUM; PERFORMANCE; MODULUS;

D O I：

10.1016/j.snb.2014.02.069

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel method was proposed to enhance sensitivity of fiber Bragg grating (FBG) hydrogen sensor in this paper. As sensing element, Pd/Ni composite film was deposited on side-face of etched fiber Bragg grating and surface of polypropylene substrate. The atomic ratio of Pd and Ni in hydrogen sensitive film was controlled at 91:9. The sensitivity of FBG hydrogen sensor is significantly improved due to the much lower Young's modulus of polypropylene substrate. FBG hydrogen sensor has 146 pm wavelength shift towards 4% hydrogen, and the sensor shows linear response and good repeatability during hydrogen concentration test. FBG hydrogen sensor has good stability even after six months, which demonstrates its great potential in hydrogen leakage monitoring. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：604 / 609

页数：6

共 42 条

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