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针对单模光纤与自聚焦透镜(GRIN)的耦合,基于光学矩阵和高斯光学耦合损耗的理论,建立了计算耦合损耗的数学模型。利用这一模型分析了单模光纤与GRIN耦合时透镜的长度、离轴偏差及角度偏差等因素对耦合损耗的影响,得到了相应的规律性曲线。这对于自聚焦透镜系统成像理论的进一步研究和光纤通信耦合设计具有重要的意义。
Aiming at the coupling between single-mode fiber and self-focusing lens (GRIN), a mathematical model for calculating coupling loss was established based on the theory of optical matrix and Gaussian optical coupling loss. The model was used to analyze the influence of lens length, off-axis deviation and angular deviation on the coupling loss when the single-mode fiber was coupled with GRIN, and the corresponding regularity curve was obtained. This is of great significance for further research on the imaging theory of self-focusing lens system and optical fiber communication coupling design.