【摘要】 叙述光纤Bragg光栅的反射率与栅距 ,有效折射率和入射波长的关系 ,用Matlab描述有效折射率和栅距的变化对反射波长的影响。以此为基础阐述光纤Bragg光栅的应变传感原理 ,并对光纤Bragg光栅的应变传感特性进行实验研究 ,实验结果与理论分析结果相一致。更多还原

【Abstract】 Narrate the relationship among the reflection index 、grating distance 、refractive index and reflection wavelength of the fiber Bragg grating, and describe the infection of the refractive index and grating distance to the reflection wavelength by using Matlab, then expound the principle of the strain sensing. Experimentally study on the strain sensing property of the fiber Bragg grating. The conclusions of the experiments agree with the theoretical calculation.更多还原