Petrov, N.I. Asymmetries Caused by Nonparaxiality and Spin–Orbit Interaction during Light Propagation in a Graded-Index Medium. Symmetry2024, 16, 87.
Petrov, N.I. Asymmetries Caused by Nonparaxiality and Spin–Orbit Interaction during Light Propagation in a Graded-Index Medium. Symmetry 2024, 16, 87.
Petrov, N.I. Asymmetries Caused by Nonparaxiality and Spin–Orbit Interaction during Light Propagation in a Graded-Index Medium. Symmetry2024, 16, 87.
Petrov, N.I. Asymmetries Caused by Nonparaxiality and Spin–Orbit Interaction during Light Propagation in a Graded-Index Medium. Symmetry 2024, 16, 87.
Abstract
Spin-orbit coupling and nonparaxiality effects during propagation of vortex vector light beams in a cylindrical graded-index waveguide are investigated by solving the full three-component field Maxwell’s equations. Symmetry breaking effects for left- and right-handed circularly polarized vortex light beams propagating in a rotationally symmetric graded-index optical fiber are considered. The mode-group delay in a graded-index fiber due to spin-orbit interaction is demonstrated. It is shown that the relative delay times between vortex pulses of opposite circular polarizations of the order of 10 ps/km can be observed in graded-index fibers for high-order topological charges.
Keywords
nonparaxial focusing; rotationally symmetric graded-index fiber; spin-orbit interaction; orbital and spin Hall effects; pulse delay time; polarization-dependent asymmetry
Subject
Physical Sciences, Optics and Photonics
Copyright:
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