A fiber micro-vibration sensor based on single-mode fiber ring laser

Shenglai Zhen; Renzhu Liu; Benli; Jing Zhang; Baogang Han

Chinese Optics Letters, 2009, 7 (1): 26, Published Online: Mar. 4, 2009

A fiber micro-vibration sensor based on single-mode fiber ring laser

论文大纲

Shenglai Zhen Renzhu Liu Benli Jing Zhang Baogang Han

Author Affiliations

Key Laboratory of Opto-Electronic Information Acquisition and Manipulation, Ministry of Education, Anhui University, Hefei 230039

Abstract

A new micro-vibration sensor based on single-mode fiber ring laser is put forward. The Mach-Zehnder interferometric (MZI) detection technique is presented for interrogating laser frequency shift due to the measurand (piezoelectric transducer (PZT) is used to simulate the micro-vibration) induced laser cavity strain from both single- and multi-mode lasers. In the experiment, compared with multi-mode laser sensors, the single-mode laser sensor is proved to be a sensor with high resolution. When the PZT is driven by the analog signal (0.03 rad near 2 kHz), the signal-to-noise ratio (SNR) of output signal from the single-mode laser sensor is close to 55 dB and the sensitivity of the sensor is about 5\times10^{-5} rad/Hz^{1/2}.

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Shenglai Zhen, Renzhu Liu, Benli, Jing Zhang, Baogang Han. A fiber micro-vibration sensor based on single-mode fiber ring laser[J]. Chinese Optics Letters, 2009, 7(1): 26.

A fiber micro-vibration sensor based on single-mode fiber ring laser

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