Fig. 1. Structure of normal uniform FBG.普通均匀FBG结构

Fig. 2. Structure of symmetric fused-tapered fiber grating.对称熔融拉锥型光纤光栅结构

Fig. 3. Distribution of the chirp coefficient with the length of the cone and its variation.啁啾系数随锥区长度及其变化量分布图

Fig. 4. Reflectance spectra with the grating length variation of 1 μm.光栅长度变化量1 μm的反射光谱图

Fig. 5. Distribution of center wavelength with axial stress.中心波长随轴向应力变化分布图

Fig. 6. Distribution of half-width of the spectral bandwidth with axial stress光谱带宽半宽度随轴向应力变化分布图

Fig. 7. Reflection spectra of fiber grating at different temperatures.光纤光栅在不同温度下的反射谱

Fig. 8. Distribution of spectral bandwidth half-width with temperature光谱带宽半宽度随温度变化分布图

Fig. 9. Symmetric fused-tapered fiber grating coated polymer structure.对称熔融拉锥型光纤光栅涂覆聚合物后结构图

Fig. 10. Reflection spectra of sensitized fiber grating under different stresses增敏后的光纤光栅在不同应力下的反射谱

Fig. 11. Distribution of half-width of the spectral bandwidth with axial stress光谱带宽半宽度随轴向应力变化分布图

Fig. 12. Stress sensing experimental device.应力传感实验系统图

Fig. 13. Spectral diagram of fiber grating under different axial stresses.光纤光栅在不同轴向应力下的光谱图

Fig. 14. Reflective spectra of fiber grating at different temperatures.光纤光栅在不同温度下的反射谱

Fig. 15. Effects of temperature and stress on . 温度与应力对 的影响