Solar background noise mitigation using the orbital angular momentum mode in vertical FSO downlink transmissions

被引：8

作者：

Lee, J. W. ^{[1
]}

Choi, J. Y. ^{[1
]}

Hyun, Y. J. ^{[1
]}

Han, S. K. ^{[1
]}

机构：

[1] Yonsei Univ, Dept Elect & Elect Engn, 50 Yonsei Ro, Seoul 03722, South Korea

来源：

OPTICS EXPRESS | 2021年 / 29卷 / 21期

关键词：

COMMUNICATION; SIGNAL;

D O I：

10.1364/OE.438550

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Free-space optical communication (FSO) is used to provide network configuration flexibility. A network-flying platform-based vertical FSO connection can be employed to enhance mobile network coverage and capacity. Solar background noise can be a potential risk that disrupts the seamless connection in the vertical FSO downlink channel. In this paper, we propose signal transmission using an orbital angular momentum (OAM) beam. The OAM demodulation process can filter sunlight out of the optical receiver except for the signal corresponding to the azimuthal state. We experimentally verified that most of the solar background noise could be reduced. To verify the feasibility of the proposed scheme in a vertical FSO channel, we modeled a FSO vertical downlink with an OAM modulation/demodulation process. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：33312 / 33321

页数：10

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