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arXiv · 1612.06215

Test of mode-division multiplexing and demultiplexing in free-space with diffractive transformation optics

Gianluca Ruffato·Michele Massari·Giuseppe Parisi·Filippo Romanato
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Abstract

In recent years, mode-division multiplexing (MDM) has been proposed as a promising solution in order to increase the information capacity of optical networks both in free-space and in optical fiber transmission. Here we present the design, fabrication and test of diffractive optical elements for mode-division multiplexing based on optical transformations in the visible range. Diffractive optics have been fabricated by means of 3D high-resolution electron beam lithography on polymethylmethacrylate resist layer spun over a glass substrate. The same optical sequence was exploited both for input-mode multiplexing and for mode sorting after free-space propagation. Their high miniaturization level and efficiency make these optical devices ideal for integration into next-generation platforms for mode-division (de)multiplexing in telecom applications.

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Gianluca Ruffato, Michele Massari, Giuseppe Parisi, Filippo Romanato. 2016-12-19. Test of mode-division multiplexing and demultiplexing in free-space with diffractive transformation optics. https://doi.org/10.1364/oe.25.007859

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