Low-frequency vibration measurement by a dual-frequency DBR fiber laser

Bing Zhang; Linghao Cheng; Yizhi Liang; Long Jin; Tuan Guo; Bai-Ou Guan

doi:10.1007/s13320-017-0402-8

Photonic Sensors ›› 2016, Vol. 7 ›› Issue (3) : 206 -210. DOI: 10.1007/s13320-017-0402-8

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Low-frequency vibration measurement by a dual-frequency DBR fiber laser

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Abstract

A dual-frequency distributed Bragg reflector (DBR) fiber laser based sensor is demonstrated for low-frequency vibration measurement through the Doppler effect. The response of the proposed sensor is quite linear and is much higher than that of a conventional accelerometer. The proposed sensor can work down to 1 Hz with high sensitivity. Therefore, the proposed sensor is very efficient in low-frequency vibration measurement.

Keywords

Fiber laser sensors / Doppler effect / vibration measurement

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Bing Zhang, Linghao Cheng, Yizhi Liang, Long Jin, Tuan Guo, Bai-Ou Guan. Low-frequency vibration measurement by a dual-frequency DBR fiber laser. Photonic Sensors, 2016, 7(3): 206-210 DOI:10.1007/s13320-017-0402-8

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