Transmission of fractional topological charges via circular arrays of anisotropic fibers

We demonstrate that in circular arrays of anisotropic fibers at certain distribution of anisotropy directors robust transmission of optical fields with half-integer topological charges is possible. We show that this is possible because the supermodes of such arrays may contain in their circularly po...

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Bibliographic Details
Published in:Optics letters 2017-02, Vol.42 (4), p.783-786
Main Authors: Alexeyev, C N, Kovalyova, A O, Rubass, A F, Volyar, A V, Yavorsky, M A
Format: Article
Language:English
Subjects:
Anisotropy
Arrays
Circularity
Fibers
Optical fibers
Robustness
Singularities
Topology
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Summary:We demonstrate that in circular arrays of anisotropic fibers at certain distribution of anisotropy directors robust transmission of optical fields with half-integer topological charges is possible. We show that this is possible because the supermodes of such arrays may contain in their circularly polarized components half-integer topological charges of opposite values. We also study the structure of singularities in these supermodes.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.42.000783