15 September 2016 Nanofabrication and test of novel diffractive optics for OAM-mode division multiplexing in optical fibers
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Abstract
The orbital angular momentum (OAM) of light offers a promising solution to today’s overwhelming demand of bandwidth and has known an increasing attention as a new degree of freedom in the telecom field. Here we present the design, fabrication and optical characterization of miniaturized phase-only diffractive optical elements (DOE) for OAM beams generation, multiplexing and sorting. Samples have been fabricated with high-resolution electron-beam lithography and exhibit high fabrication quality. Different DOE designs are presented for the sorting of optical vortices with different steering geometries in far-field and applications in free-space and optical fibers.
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G. Ruffato, G. Ruffato, M. Massari, M. Massari, F. Romanato, F. Romanato, } "Nanofabrication and test of novel diffractive optics for OAM-mode division multiplexing in optical fibers", Proc. SPIE 9927, Nanoengineering: Fabrication, Properties, Optics, and Devices XIII, 99270V (15 September 2016); doi: 10.1117/12.2237811; https://doi.org/10.1117/12.2237811
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