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Self-healing of the polarization structure in vector beams subjected to sector perturbation
M.V. Bretsko1, S.I. Yakubov1, S.I. Khalilov1, Ya.E. Akimova1, A.V. Volyar1

1Physics and Technology Institute of V.I. Vernadsky Crimean Federal University, Prospekt Academika Vernadskogo 4, Simferopol, 295007, Republic of Crimea, Russia

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DOI: 10.18287/COJ1736

Article ID: 1736

Abstract:
This paper presents a theoretical and experimental investigation of the influence of sector perturbations on the polarization structure of vector TE and TM 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 TM mode exhibits locally more stable polarization behavior, the integral restoration metric shows only minor differences compared to the TE mode. The results are supported by experimental data and are in good agreement with the theoretical model.

Keywords:
optical vortex, polarization singularities, sector perturbation, Stokes parameters.

Citation:
Bretsko MV, Yakubov SI, Khalilov SI, Akimova YaE, Volyar AV. Self-healing of the polarization structure in vector beams subjected to sector perturbation. Computer Optics 2026; 50(2): 1736. DOI: 10.18287/COJ1736.

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