An air-pressure and acoustic fiber sensor based on graphene-oxide Fabry-Perot interferometer

被引：31

作者：

Chen, Yufang ^{[1
]}

Wan, Hongdan ^{[1
]}

Lu, Yao ^{[1
]}

Wang, Ziji ^{[1
]}

Fan, Weiwen ^{[1
]}

Zhang, Zuxing ^{[1
]}

Hu, Fangren ^{[1
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Adv Photon Technol Lab, Nanjing 210023, Peoples R China

来源：

OPTICAL FIBER TECHNOLOGY | 2022年 / 68卷

基金：

中国国家自然科学基金;

关键词：

Optical fiber sensor; Air-pressure; Acoustic signal; Graphene-oxide; Fary-Perot interferometer; RESONATOR;

D O I：

10.1016/j.yofte.2021.102754

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 fibre optic sensor for both air-pressure and acoustic signal detection based on graphene-oxide Fabry-Perot interferometer (GO-FPI) is proposed and demonstrated. The GO-FPI consists of a cleaved single-mode fibre (SMF) and GO film with good uniformity and high surface evenness. As for air-pressure detection, the highest sensitivity is 3.81 nm/kPa. As for acoustic sensing, the frequency response ranges from 4 Hz to 20 kHz with good fidelity and extremely high linearity of similar to 1, with capability of single-frequency and multi-frequency signal detection. Moreover, the GO-FPI can detect the acoustic signal both in air and underwater with high stability. The noise-limited minimum detectable pressure levels are 28.74 mu Pa/Hz(1/2)@20 kHz in air and 14.44 ga/Hz(1/2)@13 kHz underwater. The proposed multi-parameter sensor with high compactness and stability has potential applications in structure health and vibration monitoring.

引用

页数：9

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