Atmospheric Turbulence Effects on the Performance of Orbital Angular Momentum Multiplexed Free-Space Optical Links Using Coherent Beam Combining
文献类型:期刊论文
作者 | Ju, Pei2,3; Fan, Wenhui1,2,3; Gao, Wei2,3; Li, Zhe2,3; Gao, Qi2,3; Jiang, Xiaoqiang2,3; Zhang, Tongyi1,2,3 |
刊名 | PHOTONICS |
出版日期 | 2023-06 |
卷号 | 10期号:6 |
ISSN号 | 2304-6732 |
关键词 | mode crosstalk angular momentum multiplexed free-space optical communication coherent laser array with discrete vortex coherent beam combining probability density |
DOI | 10.3390/photonics10060634 |
产权排序 | 1 |
英文摘要 | Atmospheric effects including absorption and scattering, and turbulence could introduce signal power loss and severe mode crosstalk for the orbital angular momentum (OAM)-based free-space optical communication (FSOC). Therefore, it is of great significance to simultaneously increase signal power and mitigate mode crosstalk. In this paper, for the OAM beam from a coherent laser array with a discrete vortex (CLA-DV) based on coherent beam combining, we investigate its propagation characteristics by employing theoretical derivation and the random phase screens simulation in atmospheric propagation, respectively. The probability density and OAM spectrum are given and compared for CLA-DV and Gaussian vortex beam. The results demonstrate that the Gaussian vortex beam exhibits smaller mode crosstalk under weak atmospheric turbulence conditions, while CLA-DV shows a good performance on crosstalk mitigation for strong atmospheric turbulence conditions in long-distance links. Furthermore, with a specially designed radial phase-locked Gaussian laser array composed of two orthogonal polarized coherent laser arrays carrying different OAM states, a scheme of optical communication system possessing simultaneously polarization-division multiplexing and OAM multiplexing is proposed. The normalized energy weight matrices of all 16 non-zeroth-order OAM modes are numerically calculated. To verify the feasibility of the proposed scheme, the performance of an eight-bit grayscale Lena image facing various atmosphere turbulences is evaluated. The quality of transmitted images becomes worse with the turbulence strength and transmission distance increase, which is confirmed by the trend of average optical signal error rates. This work will provide theoretical insight for improving the performance of OAM-based FSOC under scattering conditions. |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:001015873200001 |
源URL | [http://ir.opt.ac.cn/handle/181661/96555] |
专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 |
通讯作者 | Fan, Wenhui; Zhang, Tongyi |
作者单位 | 1.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China |
推荐引用方式 GB/T 7714 | Ju, Pei,Fan, Wenhui,Gao, Wei,et al. Atmospheric Turbulence Effects on the Performance of Orbital Angular Momentum Multiplexed Free-Space Optical Links Using Coherent Beam Combining[J]. PHOTONICS,2023,10(6). |
APA | Ju, Pei.,Fan, Wenhui.,Gao, Wei.,Li, Zhe.,Gao, Qi.,...&Zhang, Tongyi.(2023).Atmospheric Turbulence Effects on the Performance of Orbital Angular Momentum Multiplexed Free-Space Optical Links Using Coherent Beam Combining.PHOTONICS,10(6). |
MLA | Ju, Pei,et al."Atmospheric Turbulence Effects on the Performance of Orbital Angular Momentum Multiplexed Free-Space Optical Links Using Coherent Beam Combining".PHOTONICS 10.6(2023). |
入库方式: OAI收割
来源:西安光学精密机械研究所
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