A strain assisted fiber Bragg grating (S-FBG) has been fabricated by using femtosecond laser mask phase method. The spectral characteristics of the FBG with different pre-stress has been investigated. It was found that the wavelengths of the S-FBGs shift linearity towards shorter wavelength direction as the applied strain increases and show a sensitivity of 0.1596 pm/με and 0.8796 pm/με before and after the stress released, respectively. Moreover, the S-FBGs show better temperature characteristics than the normal FBG, including smaller decay rate of the reflection intensity, smaller wavelength hysteresis effect and better high temperature stability. Meanwhile, the temperature test has demonstrated that the S-FBG with larger pre-stress shows better temperature characteristics. In addition, the S-FBG has advantages of compact size, easy fabrication and high reflection, which is of high interest in developing high temperature sensing platforms.

通过使用飞秒激光掩模相位方法制造了应变辅助光纤布拉格光栅（S-FBG）。研究了具有不同预应力的FBG的光谱特性。发现随着施加应变的增加，S-FBG的波长线性向较短的波长方向移动，并且在释放应力之前和之后的灵敏度分别为0.1596 pm /με和0.8796 pm /με。此外，S-FBG的温度特性比普通FBG更好，包括反射强度的衰减率更小，波长滞后效应更小，高温稳定性更好。同时，温度测试表明，预应力较大的S-FBG具有较好的温度特性。此外，S-FBG具有尺寸紧凑，