Ring-core photonic crystal fiber for propagation of OAM modes

Abstract:

We propose and fabricate a novel ring-core photonic crystal fiber made of a circular ring core surrounded by a cladding constituted of air holes organized in a first circular ring surrounded by hexagonal ones. The fiber efficiently supports four different groups of orbital angular momentum (OAM) modes. The effective indices of spin-orbit aligned and spin-orbit anti-aligned modes in the same OAM modes group are separated by at least 2.13×10^−3 at 1550 nm. The realized fiber is expected to be a good platform for applications involving OAM modes.

Google Scholar: https://scholar.google.com/citations?view_op=view_citation&hl=fr&user=7aH_AsgAAAAJ&pagesize=100&sortby=pubdate&citation_for_view=7aH_AsgAAAAJ:2osOgNQ5qMEC

DOI: https://doi.org/10.1364/OL.44.001611

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