单模FBG的纤芯被腐蚀的过程仿真，计算有效折射率、谐振波长、谐振波长的折射率灵敏度随纤芯直径变化的规律并画出变化趋势曲线！非常有用的哦。-Numerical simulation for the procees of Core-ethced FBG, including the changes of effective refractive index,resonant wavelength and SRI sensitivity with the decrease in the core di