Substrate type FBG sensor package structure attracted a wide spread attention in the strain tests ,particu⁃larly in the fields of aeronautics and astronautics,which paste mode plays an important role for monitoring the strain of aircraft skin. In order to improve measurement precision on which the substrate package structure FBG measures the strain on wing surface. Tensile properties of the thin test piece pasted substrate FBG sensor was studied ,experi⁃mental results showed that the traditional bonding method of substrate FBG sensor will cause the measured nonlin⁃ear deformation during stretching. Accordingly,emulation on static loading condition about pasting sensor unit (1 mm)to thin test-part(1.5 mm)was investigated by finite element analysis software-ANSYS,adding static optimi⁃zation of finite element analysis and theoretical analysis,and results show the symmetrical pasted substrate type FBG strain sensor unit would solve non-linear relationship between the wavelength and the stain,effectively com⁃pensate for the effects of temperature on the measurement. FBG demodulation system with MTS mechanical testing experimental system was conducted,the experimental results show that the test linearity of new bonding method is 0.998 ,sensitivity of strain sensing unit is 0.946 pm/με,improving strain test accuracy and can be effectively applied to aircraft skin strain testing.%基片式FBG传感器封装结构在应变测试中受到广泛关注，尤其是在航空航天领域，其粘贴方式对监测飞机蒙皮应变具有重要意义。为了提高基片式封装结构的FBG测量飞机蒙皮应变精度，对薄板试验件粘贴基片式FBG传感器进行力学性能研究，实验结果表明传统粘结基片式FBG传感器方式会引起被测薄板材在拉伸过程中产生非线性变形。据此，通过ANSYS有限元分析软件仿真粘贴1 mm传感单元的1.5 mm薄板静态加载过程，并进行静力学有限元优化分析，力学分析及理论推导结果显示，对称粘贴基片式FBG传感单元能够解决应变与波长非线性关系，且能够有效补偿温度对测量的影响。搭建FBG解调系统与MTS力学测试实验系统，实验结果表明，在对称补偿的布点方式下，应变测试线性度为0.998，传感单元应变灵敏度为0.946 pm/με，提高了应变测试精度，可以有效的应用到飞机蒙皮应变测试。
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