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

作　　者：甄胜来 刘仁柱 俞本立 张静 韩保刚 

机构地区：[1]Key Laboratory of Opto-Electronic Information Acquisition and Manipulation,Ministry of Education,Anhui University

出　　处：《Chinese Optics Letters》2009年第1期26-28,共3页中国光学快报（英文版）

基　　金：supported by the Technological Fund of Outstanding Youth of Anhui Province under Contract No.08040106903

摘　　要：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 ×10^-5 rad/Hz1/2.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 ×10^-5 rad/Hz1/2.

关 键 词：mode MZI ring A fiber micro-vibration sensor based on single-mode fiber ring laser 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]