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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Analysis of the orbital angular momentum spectrum for Laguerre-Gaussian beams under moderate-to-strong marine-atmospheric turbulent channels
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Analysis of the orbital angular momentum spectrum for Laguerre-Gaussian beams under moderate-to-strong marine-atmospheric turbulent channels

机译:中等至强海洋大气湍流通道下拉瓜 - 高斯梁的轨道角动量谱分析

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摘要

Free-space optical (FSO) communication based on orbital angular momentum (OAM) can be used to enhance the capacity of systems for vessel-to-vessel or ship-to-aircraft communication. Studying the OAM spectrum is important for analyzing the performance of FSO-OAM communication systems under marine-atmosphere channels. This study offers a new, concise form for the OAM spectrum for Laguerre-Gaussian (LG) beams propagating under moderate-to-strong marine-atmospheric turbulent channels with high accuracy. We use a concise expression to analytically investigate the rules governing the variation in the OAM spectrum versus OAM number, distance, refractive-index structure parameter, and wavelength. We demonstrate that broadening of the OAM spectrum caused by marine-atmospheric channels can be analytically studied based on a simplified expression. The results indicate that an increase in the transmitted OAM number, distance and refractive-index structure parameter exacerbates broadening of the OAM spectrum and that using a larger wavelength relieves such broadening. This data contributes to the analysis of FSO-OAM multiplexing communication systems under marine-atmospheric turbulent channels and the design of future over-the-sea communication systems.
机译:基于轨道角动量(OAM)自由空间光(FSO)的通信可以被用于增强系统的容量为容器到容器或舰对飞机的通信。研究OAM频谱是用于分析FSO-OAM通信系统的下海洋大气通道的性能是重要的。这项研究提供了拉盖尔 - 高斯(LG)的OAM谱新,简洁的形式下横梁高精度中度到强烈的海洋的大气湍流渠道传播。我们使用简洁的表达解析地调查管理在OAM光谱与OAM数,距离,折射率结构参数,和波长的变化的规则。我们证明因海洋大气通道OAM光谱的变宽可以通过分析研究了基于简化的表达。结果表明,增加所发送的OAM数,距离和折射率结构参数加剧拓宽OAM频谱和使用较大波长减轻这种展宽。该数据有助于FSO-OAM复下海洋的大气湍流信道的通信系统和未来过度的海通信系统的设计分析。

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