Optimization of wireless optical communication quality using near-perfect Laguerre-Gaussian beam in the propagating field

作     者：Wang, Shuailing Xu, Jingping Yang, Yaping Liu, Qian Cheng, Mingjian 

作者机构：School of Physics Science and Engineering Tongji University Shanghai200092 China Beijing Institute of Control and Electronic Technology Beijing100038 China School of Physics Xidian University Xi’an710071 China 

出 版 物：《Optical and Quantum Electronics》 (Opt Quantum Electron)

年 卷 期：2025年第57卷第1期

页      面：1-16页

核心收录：

学科分类：070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 0714[理学-统计学（可授理学、经济学学位）] 0803[工学-光学工程] 0701[理学-数学] 0702[理学-物理学] 

基　　金：This work was supported by the National Natural Science Foundation of China (12174288, 12274326, 61905186) National Key Research and Development Program of China (2021YFA1400602) Shanghai Aerospace Science and Technology Innovation Foundation (SAST-2022-069) 

主　　题：Gaussian beams 

摘      要：We propose the use of a near-perfect Laguerre-Gaussian beam (NPLGB) as the propagating field, which maintains a fixed beam radius not only at the source plane but also throughout the entire propagation process, unaffected by orbital angular momentum (OAM). Furthermore, the beam radius of NPLGB is less influenced by radial index, hence NPLGB exhibits perfect property for both OAM and radial index. To evaluate the transmission performance of NPLGB, we introduced the centroid ring radius (CRR) as a novel evaluation metric and validated its effectiveness. Furthermore, we explore the application of NPLGB in wireless optical communications and assess its performance in atmospheric turbulence. Our results reveal that NPLGB offers significantly improved transmission quality compared to traditional Laguerre-Gaussian beam, with the received signal largely unaffected by OAM modes or radial index. The CRR framework provides a comprehensive explanation for the behavior of NPLGB at the receiving end. In addition, we investigated the effects of turbulence and beam parameters on the received probability of NPLGB, and discussed the influence of the radial index on the total crosstalk probability of NPLGB. The application of NPLGB will significantly advance the objective of utilizing LGB to achieve unrestricted degrees of freedom in wireless optical communications, and offers valuable insights for the development of next-generation vortex beams. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2025.