Plane wave coupling into single-mode fiber in the presence of random angular jitter
Plane wave coupling into single-mode fiber in the presence of random angular jitter
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DOI：
10.1364/ao.48.005184
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发表时间：
2009-09-20
期刊：
影响因子：
1.9
通讯作者：
Han, Qiqi
中科院分区：
文献类型：
--
作者：
Ma, Jing;Zhao, Fang;Han, Qiqi
将相干平面波有效耦合到单模光纤中是实现1550nm自由空间光通信的关键技术。本文研究了平面波随机角抖动对单模光纤耦合的影响。在瞳孔平面上处理了随机抖动存在时平均耦合效率的表达式。首先，推导了零偏误差情况下平均耦合效率的解析表达式。然后考虑了偏置误差。通过最小化耦合效率损失，得到了随机抖动存在时光纤耦合光学系统设计参数β的最优值。本文的研究结果将有助于光纤耦合光学系统的参数估计和优化。(C) 2009年美国光学学会
Efficient coupling of coherent plane waves into single-mode fibers is a key technology for free-space optical communication at 1550 nm. Here we deal with the influence of random angular jitter on a plane wave to single-mode fiber coupling. The expression of mean-coupling efficiency in the presence of random jitter is handled in the pupil plane. First, an analytical expression of the mean-coupling efficiency is derived for the zero bias error case. Then the bias error was taken into account. By minimizing the coupling efficiency penalty, the optimum value of design parameter beta of fiber-coupled optical systems in the presence of random jitter is obtained. The results obtained here will be useful in facilitating parametric estimation and optimization of fiber-coupled optical systems. (C) 2009 Optical Society of America