High-sensitivity gas pressure sensor with low temperature cross-talk based on Vernier effect of cascaded Fabry-Perot interferometers

被引：12
作者：
Tian, Peixuan [1 ]
Guan, Chunying [1 ]
Xiong, Ziyang [1 ]
Gao, Shan [1 ]
Ye, Peng [1 ]
Yang, Jing [1 ]
He, Xuelan [1 ]
Shi, Jinhui [1 ]
Yuan, Libo [1 ]
机构：
[1] Harbin Engn Univ, Coll Phys & Optoelect Engn, Harbin 150001, Peoples R China
来源：
OPTICAL FIBER TECHNOLOGY | 2023年 / 75卷
基金：
中国国家自然科学基金;
关键词：
Fiber sensor; Gas pressure sensor; Fabry-Perot interferometer; Vernier effect; FIBER-TIP; CAVITY;
D O I：
10.1016/j.yofte.2022.103160
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 gas pressure sensor composed of cascaded Fabry-Perot interferometers (FPIs) based on Vernier effect was demonstrated. Two hollow silica tubes (HSTs) with different inner diameters were used to construct the FP cavities, and spliced with single-mode fiber (SMF) to make a gas pressure sensor with a closed cavity FPI and an open cavity FPI in series. The experimental results show that the proposed sensor achieves a high gas pressure sensitivity of-44.31 nm/MPa in the range of 0-2.2 MPa due to the Vernier amplification effect and a very low temperature cross-sensitivity of-0.6 KPa/celcius. This sensor has high sensitivity, wide measurement range, small temperature crosstalk, good robustness and low production cost in gas pressure measurement.
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页数：6
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