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Structured light transformations and orbital angular momentum control in a three-coil optical snake
C.N. Alexeyev 1, S.S. Aliyeva 1, E.V. Barshak 1, B.P. Lapin 1, M.A. Yavorsrky 1

V.I. Vernadsky Crimean Federal University, 295000, Simferopol, Russia, Prospekt Vernadskogo 4

 PDF, 1424 kB

DOI: 10.18287/2412-6179-CO-1121

Pages: 701-712.

Full text of article: Russian language.

In this paper, we studied transformations of structured light and its angular momentum in a three-coil optical snake – a coil resonator composed of 3 evanescently uniformly coupled coils of a multimode fiber. We have suggested a fully vectorial theory of normal modes of the 3-coil resona-tor, which takes account of the spin-orbit interaction. On the basis of the analytical expressions for such normal modes and their propagation constants we have studied transmission of some types of structured light beams – optical vortices, Hermite-Gaussian-like and Laguerre-Gaussian beams – through such a system. We have shown the possibility of a super-efficient parametric control over the topological charge, orbital and spin angular momenta of the outcoming optical field by this system. We have theoretically demonstrated implementation of logic X and Y Pauli gates for light beams carrying orbital angular momentum on the basis of such a 3-coil resonator.

coupled fibers, microcoil fiber resonator, structured light, optical snake, optical vortex conversion, Pauli gate.

Alexeyev CN, Alieva SS, Barshak EV, Lapin BP, Yavorsky MA. Structured light transformations and orbital angular momentum control in a three-coil optical snake. Computer Optics 2022; 46(5): 701-712. DOI: 10.18287/2412-6179-CO-1121.

This work was funded by the Russian Science Foundation under Grant 20-12-00291.


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