Transverse-Stress Compensated Methane Sensor Based on Long-Period Grating in Photonic Crystal Fiber

被引：20

作者：

Liu, Hai ^{[1
,2
]}

Zhang, Yanzeng ^{[1
]}

Chen, Cong ^{[1
]}

Bai, Bingbing ^{[1
]}

Shao, Qiyuan ^{[1
]}

Wang, Haoran ^{[1
]}

Zhang, Wen ^{[1
]}

Chen, Cancan ^{[1
]}

Tang, Shoufeng ^{[1
]}

机构：

[1] China Univ Min & Technol, Sch Informat & Control Engn, Xuzhou 221116, Jiangsu, Peoples R China

[2] Xuzhou Key Lab Artificial Intelligence & Big Date, Xuzhou 221116, Jiangsu, Peoples R China

来源：

IEEE ACCESS | 2019年 / 7卷

关键词：

Methane sensor; transverse-stress compensation; photonic crystal fiber long period grating; surface plasmon resonance; SURFACE-PLASMON RESONANCE; NUMERICAL-ANALYSIS; SENSITIVITY;

D O I：

10.1109/ACCESS.2019.2951133

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A high-sensitive and transverse-stress compensated methane sensor based on a photonic crystal fiber long-period grating (PCF-LPG) is proposed. The outermost layer of the PCF consists of six large side-holes, five of which are coated with methane-sensitive compound film to achieve methane measurement. Such side-hole structure is helpful for gas sensitive reaction, but not conducive to avoiding external stress interference. Therefore, the last large hole is plated with silver layer to eliminate the cross-sensitivity effect through adding a Surface Plasmon Resonance (SPR) sensing channel with the consideration of photo-elastic effect and material deformation. Results show that the methane gas sensitivity can reach up to 6.39nm/% with the transverse-stress compensation. The sensor is very simple and effective, which provides a new method of gas measurement combined with different actual conditions.

引用

页码：175522 / 175530

页数：9

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