Fiber optic coupled surface plasmon resonance sensor based Ag-TiO2 films for hydrogen detection

被引：19

作者：

Deng, Yali ^{[1
]}

Li, Mei ^{[1
]}

Cao, Wen ^{[2
]}

Wang, Ming ^{[2
]}

Hao, Hui ^{[1
]}

Xia, Wei ^{[1
]}

Su, Fu ^{[3
]}

机构：

[1] Nanjing Normal Univ, Sch Comp & Elect Informat, Nanjing 210023, Peoples R China

[2] Nanjing Normal Univ, Jiangsu Key Lab Optoelect Technol, Nanjing 210023, Peoples R China

[3] Nanjing Normal Univ, Sch Chem & Mat Sci, Nanjing 210023, Peoples R China

来源：

OPTICAL FIBER TECHNOLOGY | 2021年 / 65卷

关键词：

Gas sensor; Surface plasmon resonance; Fiber optic sensor; TiO2; film;

D O I：

10.1016/j.yofte.2021.102616

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：

We propose and demonstrate the fiber optic Surface Plasmon Resonance (SPR) for hydrogen sensing based on Ag/TiO(2)( )at the telecommunications wavelength of 1550 nm. The sensor using TiO2 as a sensitive layer for hydrogen detection consists of a multilayer film of 45 nm Ag/110 nm TiO2 deposited on the coupling prism substrate. An intensity interrogation SPR with Kretschmann configuration is designed, where SPR phenomenon will occur at the interface of the Ag/TiO2 film, and the hydrogen concentration will be detected by measuring the change in the reflected intensity. The sensitivity of the sensor is optimal at an Ag/TiO2 thickness. Simulation and experimental results demonstrate that the fiber-optic SPR sensor developed provides hydrogen sensing and has a high sensitivity to a hydrogen concentration ranging between 14.7% and 25% Hydrogen in Air, reaching 523nW/%.

引用

页数：6

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