Optical Fiber Hydrogen Sensor Based on the EVA/Pd Coated Hollow Fiber

被引：9

作者：

Liu, Rui-Xin ^{[1
,2
]}

Zhang, Xian ^{[1
,2
]}

Zhu, Xiao-Song ^{[1
,2
,3
]}

Shi, Yi-Wei ^{[1
,3
]}

机构：

[1] Fudan Univ, Sch Informat Sci & Technol, Shanghai 200433, Peoples R China

[2] Fudan Univ, Yiwu Res Inst, Yiwu City 322000, Peoples R China

[3] Fudan Univ, Key Lab Informat Sci Electromagnet Waves, Shanghai 200433, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2022年 / 14卷 / 03期

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

Hydrogen; Films; Optical fiber sensors; Optical fibers; Hafnium; Palladium; Sensitivity; Hydrogen sensor; hollow fiber; palladium; optical fiber sensors; PLASMON RESONANCE SENSOR; INTERFEROMETER; ENERGY;

D O I：

10.1109/JPHOT.2022.3168009

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 novel optical fiber hydrogen sensor based on the dielectric/metal coated hollow fiber structure is proposed. The palladium (Pd) and ethylene-vinyl acetate (EVA) layers are sequentially coated on the inner surface of the hollow core of the silica capillary to fabricate the EVA/Pd coated hollow fiber sensor. Theoretical ray transmission model is carried out to analyze the influence of the thicknesses of the Pd and EVA films. The experimental transmission spectra of the proposed sensor filled with hydrogen gas of different concentrations are measured. The experimental results show that the interference peak in the spectrum has a red shift with the increase of hydrogen concentration. Then the hydrogen concentration can be obtained by measuring the wavelength of the interference peak. In the range of 0-4% hydrogen concentration, the total shift is 10.64nm and the average sensitivity is 2.66 nm/%. Compared to other optical fiber hydrogen sensors, the proposed sensor has the advantages of simple structure, easy fabrication, low cost, high sensitivity and good safety performance.

引用

页数：6

共 29 条

[1] Hydrogen leak detection using an optical fibre sensor for aerospace applications [J].