Test of mode-division multiplexing and demultiplexing in free-space with diffractive transformation optics
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.
- Publication:
-
Optics Express
- Pub Date:
- April 2017
- DOI:
- 10.1364/OE.25.007859
- arXiv:
- arXiv:1612.06215
- Bibcode:
- 2017OExpr..25.7859R
- Keywords:
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- Physics - Optics
- E-Print:
- 4 pages, 1 extended references page, 6 figures. arXiv admin note: substantial text overlap with arXiv:1610.07443