Properties of focused Laguerre-Gaussian beam propagating in anisotropic ocean turbulence
Xinguang Wang(王新光)1,†, Yangbin Ma(马洋斌)1, Qiujie Yuan(袁邱杰)1, Wei Chen(陈伟)1, Le Wang(王乐)2, and Shengmei Zhao(赵生妹)2,3,4
1 College of Science, Nanjing University of Posts and Telecommunications, Nanjing 210003, China; 2 Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China; 3 Key Lab of Broadband Wireless Communication and Sensor Network Technology(Ministry of Education), Nanjing University of Posts and Telecommunications, Nanjing 210003, China; 4 National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Abstract We analyze the properties of a focused Laguerre-Gaussian (LG) beam propagating through anisotropic ocean turbulence based on the Huygens-Fresnel principle. Under the Rytov approximation theory, we derive the analytical formula of the channel capacity of the focused LG beam in the anisotropic ocean turbulence, and analyze the relationship between the capacity and the light source parameters as well as the turbulent ocean parameters. It is found that the focusing mirror can greatly enhance the channel capacity of the system at the geometric focal plane in oceanic turbulence. The results also demonstrate that the communication link can obtain high channel capacity by adopting longer beam wavelength, greater initial beam waist radius, and larger number of transmission channels. Further, the capacity of the system increases with the decrease of the mean squared temperature dissipation rate, temperature-salinity contribution ratio and turbulence outer scale factor, and with the increase of the kinetic energy dissipation rate per unit mass of fluid, turbulence inner scale factor and anisotropy factor. Compared to a Hankel-Bessel beam with diffraction-free characteristics and unfocused LG beam, the focused LG beam shows superior anti-turbulence interference properties, which provide a theoretical reference for research and development of underwater optical communication links using focused LG beams.
Fund: This work was supported by the Science and Technology Innovation Training Program of Nanjing University of Posts and Telecommunications (Grant No. CXXZD2023080), the National Natural Science Foundation of China (Grant Nos. 61871234 and 62001249), the Natural Science Foundation of Nanjing University of Posts and Telecommunications (Grant No. NY222133), and the Open Research Fund of National Laboratory of Solid State Microstructures (Grant No. M36055).
Corresponding Authors:
Xinguang Wang
E-mail: xg-cgb@njupt.edu.cn
Cite this article:
Xinguang Wang(王新光), Yangbin Ma(马洋斌), Qiujie Yuan(袁邱杰), Wei Chen(陈伟), Le Wang(王乐), and Shengmei Zhao(赵生妹) Properties of focused Laguerre-Gaussian beam propagating in anisotropic ocean turbulence 2024 Chin. Phys. B 33 024208
[1] Allen L, Beijersbergen M W, Spreeuw R J C and Woerdman J P 1992 Phys. Rev. A45 8185 [2] Zhan H C, Chen B, Peng Y X, Wang L, Wang W N and Zhao S M 2023 Chin. Phys. B32 044208 [3] Guo H X, Qiu X D and Chen L X 2023 Appl. Phys. Lett.122 061103 [4] Guzmán E A and Arzola A V 2022 J. Opt. Soc. Am. B39 1233 [5] Chen K, Ma Z Y and Hu Y Y 2023 Chin. Phys. B32 024208 [6] Bao X J, Zhu Y, Wang J C and Hu Z D 2014 Phys. Scr.98 035101 [7] Yu J J, Zhang P, Ruffato G and Lin D 2022 Front Phys.10 1026004 [8] Willner A E 2021 Opt. Photon. News32 34 [9] Willner A E, Zhao Z, Liu C, Zhang R Z, Song H Q, Pang K, Manukyan K, Song H, Su X Z, Xie G D, Ren Y X, Yan Y, Tur M, Molisch A F, Boyd R W, Zhou H B, Hu N Z, Minoofar A and Huang H 2021 APL Photon.6 030901 [10] Yang H B, Yan Q Z, Wang P, Hu L F and Zhang Y X 2022 Opt. Express30 9053 [11] Ma W Q, Lu H M, Chen D Y, Jin J L and Wang J P 2022 J. Opt.24 065701 [12] Nikishov V V and Nikishov V I 2000 Int. J. Fluid Mech. Res.27 82 [13] Lu L, Ji X L and Baykal Y 2014 Opt. Express22 27112 [14] Wang H, Kang F Z, Wang X, Zhao W and Sun S W 2021 Chin. Phys. B30 064207 [15] Chang H, Yin X L, Yao H P, Wang J J, Gao G, Xin X J and Guizani M 2022 IEEE Trans. Wireless Commun.21 11151 [16] Zhan H C, Wang L and Wang W N 2022 J. Lightwave Technol.40 4129 [17] Pang B Q, Wang S, Cheng T, Kong Q F, Wen L H and Yang P 2017 Chin. Phys. B26 054204 [18] Wang A T, Yu L H, Li J F and Liang X Y 2023 Chin. Phys. B32 044201 [19] Yin X L, Guo Y L, Yan H, Cui X Z, Chang H, Tian Q H, Wu G H, Zhang Q, Liu B and Xin X J 2018 Acta Phys. Sin.67 114201 (in Chinese) [20] Wang X G, Yang Z and Zhao S M 2019 Optik176 49 [21] Yu L and Zhang Y 2017 Opt. Express25 22565 [22] Zhou M Y, Zhou Y Q, Wu G F and Cai Y J 2019 Opt. Express27 10280 [23] Yan J L, Wei H Y, Cai D M, Jia P and Qiao T Z 2020 Acta Phys. Sin.69 144203 (in Chinese) [24] Wang Y K, Bai L, Zhang D M, Xie J Y, Guo Y and Guo L X 2021 IEEE Photon. J.13 1 [25] Cao J X, Liang H J, Zhou Y Q, Wu G F and Pang X Y 2022 Front. Phys.10 1013729 [26] Wei H Y, Yan J L, Jia P and Cai D M 2020 Acta Opt. Sin.40 2401001 (in Chinese) [27] Qin Y, Yang H J, Jiang P, Caiyang W N, Zhou M G and Zhou Y F 2023 Optik272 170286 [28] Wang S L, Cheng M J, Yang X H, Xu J P and Yang Y P 2023 Opt. Express31 20861 [29] Kotlyar V V, Khonina S N, Almazov A A and Soifer V A 2006 J. Opt. Soc. Am. A23 43 [30] Li Y, Zhang Y X and Zhu Y 2019 Opt. Express27 7656 [31] Li Y X, Cui Z W, Han Y P and Hu Y F 2019 J. Opt. Soc. Am. A36 471 [32] Wang S L, Yang D H, Zhu Y and Zhang Y X 2021 Appl. Opt.60 4135 [33] Wang X G, Wang L and Zhao S M 2021 Appl. Opt.60 8321 [34] Arimoto S 1972 IEEE Trans. Inf. Theory18 14 [35] Blahut R 1972 IEEE Trans. Inf. Theory18 460 [36] Boyd R W 1980 J. Opt. Soc. Am.70 877 [37] Feng S M and Winful H G 2001 Opt. Lett.26 485 [38] Zhang M H, Chen Y H, Liu L and Cai Y J 2016 J. Mod. Optic.63 2226 [39] Ren Z C, Qian S X, Tu C H, Li Y N and Wang H T 2015 Opt. Commun.334 156
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