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涡旋波束在大气湍流中的传输有非常重要的理论研究和实际应用意义.本文基于利托夫近似和广义惠更斯-菲涅耳原理,推导出拉盖尔-高斯(LG)光束在非Kolmogorov湍流中斜程传输时的螺旋谱,并进一步推导出系统的容量.对基于LG光束的通信系统容量进行了数值计算,并对指数参数、光束波长、天顶角、湍流内尺度、外尺度、结构常数对系统容量的影响进行了分析比较.本文的结论能够为LG光束在非Kolmogorov湍流中的通信提供一定的参考价值.
The transmission of vortex beam in atmospheric turbulence has very important theoretical research and practical application.In this paper, based on the principle of Lyotf and the generalized Huygens-Fresnel principle, the Laguerre-Gaussian (LG) Kolmogorov turbulence, and further deduce the capacity of the system.The capacity of the communication system based on LG beam is numerically calculated, and the exponential parameters, the wavelength of the light beam, the zenith angle, the internal turbulence scale, the external scale , The influence of structure constant on system capacity is analyzed and compared.The conclusion of this paper can provide some reference value for the communication of LG beam in non-Kolmogorov turbulence.