基片式光纤光栅传感器应变传递分析与试验

为研究基片式光纤光栅传感器传递效率，建立了应变传递模型，对基片式光纤光栅传感器与裸贴式光纤光栅传感器进行了对比试验，得到了传感器中心波长与挠度关系曲线，试验结果表明：基片式光纤光栅具有良好的线性度，应变灵敏度为0.822 pm/10－6，应变传递效率可达89.4%。利用ANSYS有限元软件对基片式光纤光栅传感器进行应变传递分析，有限元分析结果与试验结果一致，证明了模型和计算方法的有效。提出铍青铜基片式封装形式，并建立ANSYS模型，对其传递效率进行计算，计算结果表明：铍青铜封装应变传递性能一般，但对光纤光栅具有良好的防护性能。

Strain transfer analysis and experimental research of substrate package fiber grating sensor

To study transmission efficiency of substrate package fiber grating sensor,establish strain transfer model,and comparative experiments of fiber grating sensor and die attach fiber grating sensor are carried out, obtain curve of relationship between center wavelength and deflection,and experimental result shows that substrate package fiber grating sensor has good linearity,strain sensitivity is 0. 822 pm/10-6 ,and strain transfer efficiency is 89. 4%. Analyze on strain transfer of fiber grating sensor by using ANSYS finite element software,and finite element analysis result is in agreement with experimental result,which proves validity of model and calculation method. Put forward a package mode of beryllium bronze,establish ANSYS model,and calculate transfer efficiency. Calculation result show that characteristics of strain transfer of beryllium bronze package is common,but it has good protection performance for fiber grating.