Crosstalk of ring Airy Gaussian vortex beams disturbed by hazy scattering media and its suppression

The scattering medium significantly degrades the quality of the ring Airy Gaussian vortex beam (RAGVB) and induces crosstalk among orbital angular momentum (OAM) modes, thereby impairing the performance of OAM-based optical communication systems. In this study, we systematically investigate the effects of the scattering medium on the OAM spectral crosstalk in RAGVBs. Furthermore, we propose a correction scheme that combines the light intensity transport equation with a modified Gerchberg-Saxton phase retrieval algorithm (ITE-GS) to mitigate the impact of the scattering medium and ensure stable transmission of RAGVBs. These findings may have broad applications in optical communication, rotational sensing, and other related fields.