Research on Demodulation System for Fiber Bragg Grating Sensor Based on Tunable Laser Light

摘要：

In order to measure the signals greater than kHz such as vibration, high frequency strain and ultrasonic wave, a high-speed demodulation system for fiber Bragg grating(FBG)sensor based on tunable laser light was established. The measuring principle of the demodulation system was presented. The output curve and the wavelength measurement sensitivity were given by theoretical deduction. Then the 41434.71028 Hz vibration signal of ultrasonic cleaner was measured using this system. The system was compactly built with high demodulation speed and S/N(signal to noise ratio), meeting the special requirement for the high frequency signals measurement.

关键词： Fiber Bragg gratings demodulation technique sensitivity ultrasonic signal

作者: MENG Li-jun TAN Yue-gang ZHOU Zu-de

作者单位: School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan.China

会议类型: 国际会议

会议名称: 2011 2nd International Conference on Material and Manufacturing Technology(2011第二届材料与制造技术国际会议 ICMMT2011)

会议地点: 厦门

会议语种:英文

页码: 838-842

在线出版日期: 2011-07-08（万方平台首次上网日期，不代表论文的发表时间）