An Infrasound Sensor Based on Extrinsic Fiber-Optic Fabry-Perot Interferometer Structure

被引：78

作者：

Wang, Shun ^{[1
]}

Lu, Ping ^{[1
]}

Liu, Li ^{[1
]}

Liao, Hao ^{[1
]}

Sun, Yuan ^{[1
]}

Ni, Wenjun ^{[1
]}

Fu, Xin ^{[1
]}

Jiang, Xinyue ^{[1
]}

Liu, Deming ^{[1
]}

Zhang, Jiangshan ^{[2
]}

Xu, Hao ^{[3
]}

Yao, Qiuping ^{[3
]}

Chen, Yanming ^{[3
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Natl Engn Lab Next Generat Internet Access Syst, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Dept Elect & Informat Engn, Wuhan 430074, Peoples R China

[3] Hubei Prov Inst Measurement & Testing, Natl Opt Prod Inspect Serv Ctr, Wuhan 430074, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2016年 / 28卷 / 11期

关键词：

Fiber optical sensors; infrasound sensor; extrinsic Fabry-Perot interferometer (EFPI); ACOUSTIC SENSOR; NOISE;

D O I：

10.1109/LPT.2016.2538318

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：

An infrasound sensor based on an extrinsic fiber-optic Fabry-Perot interferometer structure is reported and demonstrated. The transducer part of this sensor is a composite film which is composed of a 3-mu m-thick small round aluminum foil and a similar to 50-mu m-thick polymer polyethylene terephthalate film. The infrasound interference will introduce the vibration of the film and result in the changes of the FP cavity length synchronously, as well as the interference spectral shift. As a consequence, we will obtain the synchronous changes of reflected power by inputting a single wavelength laser. Theoretical simulation and experimental validation are both carried out to test the performance of our fiber infrasound sensor. Results show that low-frequency infrasound signal from 1 to 20 Hz can be detected with low distortion. The proposed sensor has its superiorities and can be useful for low-frequency infrasound sensing.

引用

页码：1264 / 1267

页数：4

共 16 条

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