Self-Healing of the Polarization Structure in Vector Beams Subjected to Sector Perturbation

This paper presents a theoretical and experimental investigation of the influence of sector perturbations on the polarization structure of azimuthal and radial modes. To quantify the degree of polarization restoration, an integral metric based on normalized Stokes parameters is introduced. Numerical simulations demonstrate that for small sector angles, the polarization structure recovers at propagation distances exceeding the Rayleigh length. As the sector angle increases, only partial restoration is observed. Although the radial mode exhibits locally more stable polarization behavior, the integral restoration metric shows only minor differences compared to the azimuthal mode. The results are supported by experimental data and are in good agreement with the theoretical model.