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Fiber-coupling efficiency of Gaussian Schell model for optical communication through atmospheric turbulence

机译：高斯谢尔模型通过大气湍流进行光通信的光纤耦合效率

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In practice, due to the laser device and the inevitable error of the processing technique, the laser source emitted from the communication terminal is partially coherent, and is represented as a Gaussian Schell model (GSM). The cross-spectral density function based on the Gaussian model in previous research is replaced by the GSM. Thus the fiber-coupling efficiency equation of the GSM laser source through atmospheric turbulence is deduced. The GSM equation presents the effect of the source coherent parameter zeta on the fiber-coupling efficiency, which was not included previously. The effects of the source coherent parameter zeta on the spatial coherent radius and the fiber-coupling efficiency through atmospheric turbulence are numerically simulated and analyzed. The result manifests that the fiber-coupling efficiency invariably degrades with increasing zeta. The work in this paper is aimed to improve the redundancy design of fiber-coupling receiver systems by analyzing the fiber-coupling efficiency with the source coherent parameters. (c) 2015 Optical Society of America
机译：实际上，由于激光设备和不可避免的处理技术误差，从通信终端发射的激光源是部分相干的，并表示为高斯谢尔模型（GSM）。以前的研究中基于高斯模型的互谱密度函数已被GSM取代。因此，推导了GSM激光源通过大气湍流产生的光纤耦合效率方程。 GSM方程显示了源相干参数zeta对光纤耦合效率的影响，这在以前没有包括在内。数值模拟和分析了源相干参数zeta对空间相干半径和通过大气湍流的光纤耦合效率的影响。结果表明，随着zeta的增加，纤维的耦合效率总是降低。本文的工作旨在通过分析具有源相干参数的光纤耦合效率来改进光纤耦合接收器系统的冗余设计。 （c）2015年美国眼镜学会

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