• Laser & Optoelectronics Progress
  • Vol. 61, Issue 9, 0901002 (2024)
Hui Dai1、2, Peng Zhang1、2、*, Shuang He1、2, Hang Chen1、2, Yunlong Fan1、2, Yuanxin Wang1、3, Xiaoyan Li1、3, and Shoufeng Tong1、2
Author Affiliations
  • 1National and Local Joint Engineering Research Center of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, Jilin, China
  • 2School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, Jilin, China
  • 3College of Communication Engineering, Jilin university, Changchun 130022, Jilin, China
  • show less
    DOI: 10.3788/LOP230515 Cite this Article Set citation alerts
    Hui Dai, Peng Zhang, Shuang He, Hang Chen, Yunlong Fan, Yuanxin Wang, Xiaoyan Li, Shoufeng Tong. Simulation Study on Transmission and Communication Characteristics of Helical Ince-Gaussian Beams in Ocean Turbulent Channel[J]. Laser & Optoelectronics Progress, 2024, 61(9): 0901002 Copy Citation Text show less

    Abstract

    This study aimed to assess the transmission and communication characteristics of an helical Ince-Gaussian (HIG) beams in ocean turbulence channels. First, the relationship between the transmission performance (intensity distribution, phase distribution, scintillation index, centroid drift, and overlap) and the transmission distances of an HIG beams passing through ocean turbulence was simulated based on the random phase screens and the power spectrum inversion method. Next, communication bit error rate was analyzed based on the log-normal intensity probability density function. Further, the performance of the HIG beams under different beam parameters (ellipticity, order, and degree) was analyzed and optimized to achieve optimal transmission and communication performance. The simulation results revealed that the HIG beams exhibit better anti-turbulence ability at different distances compared to the Gaussian beam. In a 100 m ocean turbulence channel (ε = 10-5 m2∕s3, XT = 10-5 K2∕s, ω = -0.15, η = 10-3 m, L0 = 10 m), the scintillation index, the centroid drift and the bit error rate were reduced by 58%, 53%, and 3 orders of magnitude, respectively. Further, the transmission and communication performance of the HIG beams decreased with the increase in turbulence intensity, and the performance improvement ability of the HIG beams also decreased compared with the Gaussian beam. The bit error rate improved by about 4 orders of magnitude under relatively weak turbulence, while it improved by about 1 order of magnitude under relatively strong turbulence. When the outer scale of ocean turbulence increased, the centroid drift of the HIG beams increased slightly, while the other parameters were almost unaffected. After optimization, ellipticity, order, and degree can improve the communication and transmission performance of HIG beams,and the order is the most sensitive parameter. The simulation results may provide a theoretical basis and a technical reference for the application of HIG beams in underwater optical communications.
    Hui Dai, Peng Zhang, Shuang He, Hang Chen, Yunlong Fan, Yuanxin Wang, Xiaoyan Li, Shoufeng Tong. Simulation Study on Transmission and Communication Characteristics of Helical Ince-Gaussian Beams in Ocean Turbulent Channel[J]. Laser & Optoelectronics Progress, 2024, 61(9): 0901002
    Download Citation