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  • Received: Jul. 6, 2019

    Accepted: --

    Posted: Sep. 17, 2020

    Published Online: Sep. 17, 2020

    The Author Email:

    DOI: 10.7498/aps.68.20191034

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    Xing-Hua Tu, Yi-Chao Zhao. Temperature and stress sensing characteristics of symmetrically fused tapered fiber grating[J]. Acta Physica Sinica, 2019, 68(24): 244204-1

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Structure of normal uniform FBG.普通均匀FBG结构

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

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

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

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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. 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

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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. 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

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

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

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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. 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

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

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

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

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

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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. 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

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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. 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

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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. 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

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

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

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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. 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

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

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

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

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

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