为了提高光纤光栅应变传感器的应变响应灵敏度，提出了一种基于钛合金基片封装的光纤光栅应变传感器.根据材料弹性模量的相关理论，该封装采用钛合金(TC4)作为封装材料；根据力学传递原理，该封装采用类似杠铃状的结构设计.这种封装能够使应变有效地传递到传感器内的光纤光栅上，从而很好地测量应变.通过实验得到其应变响应灵敏度、反射波长与应变的相关系数.实验证明，采用这种封装设计的传感器能够获得较高的应变灵敏度，其反射波长和应变具有很好的相关性.

For improving the strain response sensitivity, this article proposes one fiber grating strain sensor based on titanium alloy substrate. The package uses titanium (TC4) as packaging material according to the theory of elastic modulus and uses barbell-like structure according to the transfer principle of mechanics. It obtains the strain response sensitivity and the correlation coefficient of reflection wavelength and strain. Experimental results show that the sensor which adopts this package design can obtain higher strain response sensitivity and better correlation coefficient of reflection wavelength and strain