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.

引用

页数：6

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