中文摘要：

基于分布式反馈DFB激光器的窄线宽特性及可调谐特性,设计了自温度补偿的光纤Bragg光栅（FBG）加速度检测系统。采用简支梁结构,设计了FBG低频加速度传感器。通过增加温度补偿光路,对DFB激光器的中心波长进行实时反馈控制,实现了系统对温度影响的自补偿。实验结果表明,系统对冲击激励信号和加速度的连续激励信号均有良好的动态响应,系统的固有频率为25.1Hz,频率响应范围为0~400.0Hz,加速度的最大灵敏度约为1.89V/m·s2,并且系统具有良好的温度稳定性。

英文摘要：

A self-temperature compensated fiber Bragg grating（FBG）acceleration detection system is designed based on the narrow line width and tunable characteristics of distributed feedback（DFB）laser.A simply-supported beam based FBG low-frequency acceleration sensor is realized.By increasing the temperature compensation optical path,the wavelength of DFB laser is controlled in real time to implement temperature self compensation.The results show that the system has good response to impulse excitation signal and continuous acceleration excitation signal,the natural frequency of the system is 25.1Hz,the maximum acceleration sensitivity of the system reaches about 1.89V/m·s2 with 0~400Hz frequency response range,and the system has good temperature stability.