材料科学
甲烷
压力(语言学)
栅栏
横截面
光子晶体光纤
干扰(通信)
光学
变形(气象学)
灵敏度(控制系统)
光电子学
光子晶体
长周期光纤光栅
光纤传感器
纤维
复合材料
频道(广播)
电子工程
渐变折射率纤维
化学
哲学
结构工程
有机化学
工程类
语言学
物理
电气工程
作者
Hai Liu,Yanzeng Zhang,Cong Chen,Bingbing Bai,Qiyuan Shao,Haoran Wang,Wen Zhang,Cancan Chen,Shoufeng Tang
出处
期刊:IEEE Access
[Institute of Electrical and Electronics Engineers]
日期:2019-01-01
卷期号:7: 175522-175530
被引量:14
标识
DOI:10.1109/access.2019.2951133
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 sideholes, 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.
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