中文摘要：

提出了一种新颖耐高压的光纤布拉格光栅（FBG）压强传感器。推导了该压强传感器的FBG中心波长与压强的关系，得到了其压强响应灵敏度的解析表达。从实验获得该压强传感器的压强响应灵敏度为0．0592nm／MPa，是裸FBG压强传感器的19．73倍；在0～45MPa内，该传感器的压强响应具有很好的线性和重复性，实验值与理论值吻合得很好，且压强响应灵敏度和测量范围是可调的。

英文摘要：

A novel fiber Bragg grating sensor for high pressure is proposed. The relationship between the central wavelength of FBG and the pressure is deduced,and the analytical formula of pressure sensitivity is also derived. From the result of ex periment,the pressure sensitivity is derived,which is 19.73 times than that of the bare FBG. From 0 MPa to 45 MPa,the fi-her Bragg grating sensor has good linearity and repetition,the experimental results agree with the theoretical one. It is also indicated that the pressure sensitivity and range of measure are tunable.