Spin–orbit periodic conversion in a gradient-index fiber

The characteristics of the cylindrical vector beam (CVB) and the cylindrical vector vortex beam (CVVB) in a radial gradient-index (GRIN) fiber are analyzed on the basis of the generalized Huygens–Fresnel principle. The CVB and CVVB exhibit periodic and stable transmission characteristics in the radi...

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Bibliographic Details
Published in:Optics express 2022-05, Vol.30 (10), p.16432-16441
Main Authors: Yin, Xiaojin, Zhao, Chungang, Yang, Chen, Li, Jinhong
Format: Article
Language:English
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Summary:The characteristics of the cylindrical vector beam (CVB) and the cylindrical vector vortex beam (CVVB) in a radial gradient-index (GRIN) fiber are analyzed on the basis of the generalized Huygens–Fresnel principle. The CVB and CVVB exhibit periodic and stable transmission characteristics in the radial GRIN fiber. In the beam with a vortex phase (CVVB), the polarization changes and the spin angular momentum (SAM) is detected at the focal plane of the radial GRIN fiber. A spin–orbit periodic conversion is observed in the radial GRIN fibers. Finally, the SAM expression of partially coherent light is deduced and verified via a simulation.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.457375