论文标题
自由空间光学通信的几种模式光纤耦合效率
Few-Mode Fiber Coupling Efficiency for Free-Space Optical Communication
论文作者
论文摘要
几个模式光纤是接收器自由空间光学通信的重要组成部分，以获得可实现的高耦合效率。从自由空间光学通信链接到几种模式光纤的理论耦合模型是基于尺度适应的Laguerre-Gaussian模式的。发现各种模式的耦合效率在存在大气湍流或随机抖动的情况下的行为不同。基于此模型，获得了最佳耦合几何参数，以最大程度地提高几型光纤选择模式的耦合效率。研究了随机抖动的沟通性能。结果表明，与单模光纤相比，少数模式纤维具有更好的位率性能性能，尤其是在高信噪比的比率方面。
Few-mode fiber is a significant component of free-space optical communication at the receiver to obtain achievable high coupling efficiency. A theoretical coupling model from the free-space optical communication link to a few-mode fiber is proposed based on a scale-adapted set of Laguerre-Gaussian modes. It is found that the coupling efficiency of various modes behaves differently in the presence of atmospheric turbulence or random jitter. Based on this model, the optimal coupling geometry parameter is obtained to maximize the coupling efficiency of the selected mode of few-mode fiber. The communication performance with random jitter is investigated. It is shown that the few-mode fiber has better bit-error rate performance than single-mode fiber, especially in high signal-to-noise ratio regimes.
