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<p>We propose an enhanced scheme&#xa0;for turbulence compensation of ring Airy Gaussian vortex (RAGV) beams by improving the Gerchberg-Saxton (GS) phase recovery algorithm through integration with the simulated annealing (SA) algorithm. The compensation effect and it’s influence on the modal crosstalk of RAGV beams carrying orbital angular momentum (OAM) under varying turbulence intensities, transmission distance, and distribution factors are investigated. Numerical results show that the compensation method can enable effective transmission of RAGV beams under medium-intensity turbulence. Under the same conditions, the RAGV beam also exhibits stronger transmission capabilities than the Laguerre–Gaussian (LG) beam. The improved GS algorithm will greatly improve the RAGV beams transmission performance by analyzing the orbital angular momentum spectrum. This study contributes to identifying carriers more suitable for optical vortex communication systems and mitigating the&#xa0;adverse effects of optical transmission in turbulence environments.</p>

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Compensation of ring airy gaussian vortex beams based on an improved algorithm

  • 期刊论文

  • 发表日期：

    2025年7月16日

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  • Hongwei Shao,
  • Jun Ou,
  • Hao Chi,
  • Bo Yang,
  • Shuna Yang,
  • Ran Zeng

摘要

We propose an enhanced scheme for turbulence compensation of ring Airy Gaussian vortex (RAGV) beams by improving the Gerchberg-Saxton (GS) phase recovery algorithm through integration with the simulated annealing (SA) algorithm. The compensation effect and it’s influence on the modal crosstalk of RAGV beams carrying orbital angular momentum (OAM) under varying turbulence intensities, transmission distance, and distribution factors are investigated. Numerical results show that the compensation method can enable effective transmission of RAGV beams under medium-intensity turbulence. Under the same conditions, the RAGV beam also exhibits stronger transmission capabilities than the Laguerre–Gaussian (LG) beam. The improved GS algorithm will greatly improve the RAGV beams transmission performance by analyzing the orbital angular momentum spectrum. This study contributes to identifying carriers more suitable for optical vortex communication systems and mitigating the adverse effects of optical transmission in turbulence environments.