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arXiv · 1610.07443

Compact sorting of optical vortices by means of diffractive transformation optics

Gianluca Ruffato·Michele Massari·Filippo Romanato
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Abstract

The orbital angular momentum (OAM) of light has recently attracted a growing interest as a new degree of freedom in order to increase the information capacity of today optical networks both for free-space and optical fiber transmission. Here we present our work of design, fabrication and optical characterization of diffractive optical elements for compact OAM-mode division demultiplexing based on optical transformations. Samples have been fabricated with 3D high-resolution electron beam lithography on polymethylmethacrylate (PMMA) resist layer spun over a glass substrate. Their high compactness and efficiency make these optical devices promising for integration into next-generation platforms for OAM-modes processing in telecom applications.

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Gianluca Ruffato, Michele Massari, Filippo Romanato. 2016-10-24. Compact sorting of optical vortices by means of diffractive transformation optics. https://doi.org/10.1364/ol.42.000551

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