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arXiv 2205.07641physics.optics
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大气湍流中的鲁棒结构光

Robust structured light in atmospheric turbulence

Asher Klug, Cade Peters, Andrew Forbes

备注：
11 pages, 9 figures. Submitted to Advanced Photonics
发表信息：
Advanced Photonics, Vol. 5, Issue 1, 016006 (February 2023)
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AI总结：

本文提出大气湍流的真正本征模式，使结构光在大气传播中保持不变，并通过理论和实验验证其不变性，方法可扩展至水下和光纤等信道。

摘要：

结构光通常用于自由空间光通信信道，无论是经典通信还是量子通信，信息被编码在模式的空间结构中以提高带宽。与偏振不同，光的空间结构在此类信道中会受到大气湍流的扰动，因此，大量注意力集中在某一种模式类型是否比另一种更鲁棒的问题上，但结果似乎尚无定论且相互矛盾。真实世界和实验模拟的湍流条件均表明，自由空间结构光模式会以某种方式受到湍流扰动，导致振幅和相位失真。在此，我们提出了在通过大气传播时保持不变的结构光的复杂形式：大气湍流的真正本征模式。我们提供了获得这些本征模式的理论方法，并通过数值和实验验证了它们的不变性。尽管我们已在大气湍流上演示了该方法，但其普适性使其也能扩展到其他信道，例如水下和光纤信道。

英文摘要：

Structured light is routinely used in free space optical communication channels, both classical and quantum, where information is encoded in the spatial structure of the mode for increased bandwidth. Unlike polarisation, the spatial structure of light is perturbed through such channels by atmospheric turbulence, and consequently, much attention has focused on whether one mode type is more robust than another, but with seemingly inconclusive and contradictory results. Both real-world and experimentally simulated turbulence conditions have revealed that free-space structured light modes are perturbed in some manner by turbulence, resulting in both amplitude and phase distortions. Here, we present complex forms of structured light which are invariant under propagation through the atmosphere: the true eigenmodes of atmospheric turbulence. We provide a theoretical procedure for obtaining these eigenmodes and confirm their invariance both numerically and experimentally. Although we have demonstrated the approach on atmospheric turbulence, its generality allows it to be extended to other channels too, such as underwater and in optical fibre.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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