Kai Chen, Lian-Qing Zhu, Hai-Sha Niu, Kuo Meng, Ming-Li Dong. Stress measurement based on 1556 nm fiber laser frequency splitting effect [J]. Acta Physica Sinica, 2019, 68(10): 104201-1
- Acta Physica Sinica
- Vol. 68, Issue 10, 104201-1 (2019)
Fig. 1. Structure diagram of the half external cavity frequency splitting fiber laser.半外腔频率分裂光纤激光器结构图
Fig. 2. Optical spectrum of the half external cavity frequency splitting fiber laser.半外腔频率分裂光纤激光器光谱图
Fig. 3. Spectrum of cavity frequency splitting.空腔频率分裂频谱图
Fig. 4. Mode structure diagram of resonant cavity.谐振腔激光模式结构图
Fig. 5. Finite element simulation of the main stress of the lens.镜片主应力大小与方向有限元仿真
Fig. 6. (a)Frequency spectrum change of PMB2 in loading; (b) relationship of the PMB2 and the force.(a)加载中PMB2拍频信号频谱变化; (b) PMB2拍频信号与加载力关系
Fig. 7. Diagram of birefringence superposition.双折射叠加图
Fig. 8. Variation of the phase delay with the fast axis angle.合成相位延迟随快轴夹角变化
Fig. 9. Relationship of the birefringence parameters of glass stress and the force.玻璃应力双折射参数与加载力关系
Fig. 10. Repeatability of single measurement.单次测量重复性
Fig. 11. Repeatability experiment of birefringence of glass stress.应力双折射重复性实验
Fig. 12. Fitting of glass stress and optical path difference.玻璃应力-光程差拟合
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