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从匹配型熊猫光纤的结构及相衬显微技术物理图像出发 ,建立起仿真数学模型 ,计算机仿真了相衬法定轴技术。仿真数学模型考虑了匹配型熊猫光纤的应力折射率分布、相衬成像原理、光纤在物镜观察面上的相衬成像偏差等物理图像。计算机仿真分析得到了相衬法确定匹配型保偏光纤双折射光轴的光强特征图像。仿真结果与实验得到的光强图像相符合。此方法已成功地应用于定轴实验 ,定轴分辨率小于 2°
Based on the structure of the matching panda fiber and the phase contrast microscopy physics image, a simulation mathematical model is set up, and the phase-contrast normal axis technology is simulated by computer. The simulation mathematical model takes into account the stress refractive index distribution, the phase contrast imaging principle, and the phase contrast imaging of the optical fiber on the observation surface of the objective. Computer simulation results obtained the phase contrast method to determine the matching polarization type polarization fiber birefringence optical characteristics of the image. The simulation results are consistent with the experimental light intensity images. This method has been successfully applied to fixed-axis experiments with a fixed-axis resolution of less than 2 °