Ultra-Low-Frequency Tri-Component Fiber Optic Interferometric Accelerometer

被引：42

作者：

Chen, Jiandong ^{[1
]}

Chang, Tianying ^{[1
]}

Yang, Yue ^{[1
]}

Gao, Wenzhi ^{[1
]}

Wang, Zhongmin ^{[1
]}

Cui, Hong-Liang ^{[1
]}

机构：

[1] Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130061, Jilin, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2018年 / 18卷 / 20期

关键词：

Fiber optic sensors; interferometric accelerometer; geophysical measurement techniques; ultra-low frequency vibration detection; SEISMOMETER; PERFORMANCE; GEOPHONE; SENSORS; DESIGN;

D O I：

10.1109/JSEN.2018.2865894

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：

We demonstrate a high-performance ultra-low-frequency tri-component fiber optic interferometric accelerometer (FOIA), designed particularly for application in seismic observation of ocean-floor deployment, with high sensitivity, low noise level, and large dynamic range. Experimental results show that the sensitivity of the FOIA is 57 dB re rad/g, and the noise levels of the three orthogonal components are 0.163, 0.181, and 0.153 mu g, respectively, within the operating frequency band (0.005-50 Hz). The dynamic range of the system is higher than 117.03 dB. Actual observational results of an M4.3 seismic event show that the prototypical system can clearly record the seismic wave, with unambiguous demarcation of S-wave and P-wave, and locate the hypocenter of the earthquake.

引用

页码：8367 / 8374

页数：8

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