Low-cost fiber optic extrinsic Fabry-Perot interferometer based on a polyethylene diaphragm for vibration detection

被引：22
|
作者：
Li, Shili [1 ]
Yu, Benli [1 ]
Wu, Xuqiang [1 ]
Shi, Jinhui [1 ]
Ge, Qiang [2 ]
Zhang, Gang [1 ]
Guo, Mengzhen [1 ]
Zhang, Yifan [1 ]
Fang, ShaSha [1 ]
Zuo, Cheng [1 ]
机构：
[1] Anhui Univ, Key Lab Opto Elect Informat Acquisit & Manipulat, Hefei 230601, Anhui, Peoples R China
[2] Anhui Polytech Univ, Sch Math & Phys, Wuhu 241000, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2020年 / 457卷
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Fabry-Perot interferometer; Polyethylene diaphragm; Vibration detection; ACCELEROMETER; SENSITIVITY; SENSOR;
D O I：
10.1016/j.optcom.2019.124332
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A low cost, compact-extrinsic Fabry-Perot interferometer (EFPI) based on a polyethylene diaphragm for vibration detection is proposed. A fiber optic Fabry-Perot accelerometer (FOFPA) with a diameter of 10.0 mm is fabricated and a silica gel is adhered to the middle of polyethylene diaphragm as a mass load to form a compact structure. Theoretical simulation, modal analysis, and experimental tests are carried out to evaluate the performance of this FOFPA. Experimental results show that the measured sensitivity and acceleration resolution are 135 mV/g and 24.4 mu g/Hz(1/2), respectively. The sensor has a flat frequency response in the range of 20 Hz-1.5 kHz and is expected to be used for micro vibration monitoring.
引用
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页数：6
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