Peta-bit-per-second optical communications system using a standard cladding diameter 15-mode fiber

Georg Rademacher (), Benjamin J. Puttnam, Ruben S. Luís, Tobias A. Eriksson, Nicolas K. Fontaine, Mikael Mazur, Haoshuo Chen, Roland Ryf, David T. Neilson, Pierre Sillard, Frank Achten, Yoshinari Awaji and Hideaki Furukawa
Additional contact information
Georg Rademacher: National Institute of Information and Communications Technology
Benjamin J. Puttnam: National Institute of Information and Communications Technology
Ruben S. Luís: National Institute of Information and Communications Technology
Tobias A. Eriksson: National Institute of Information and Communications Technology
Nicolas K. Fontaine: Nokia Bell Labs
Mikael Mazur: Nokia Bell Labs
Haoshuo Chen: Nokia Bell Labs
Roland Ryf: Nokia Bell Labs
David T. Neilson: Nokia Bell Labs
Pierre Sillard: Prysmian Group
Frank Achten: Prysmian Group
Yoshinari Awaji: National Institute of Information and Communications Technology
Hideaki Furukawa: National Institute of Information and Communications Technology

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract Data rates in optical fiber networks have increased exponentially over the past decades and core-networks are expected to operate in the peta-bit-per-second regime by 2030. As current single-mode fiber-based transmission systems are reaching their capacity limits, space-division multiplexing has been investigated as a means to increase the per-fiber capacity. Of all space-division multiplexing fibers proposed to date, multi-mode fibers have the highest spatial channel density, as signals traveling in orthogonal fiber modes share the same fiber-core. By combining a high mode-count multi-mode fiber with wideband wavelength-division multiplexing, we report a peta-bit-per-second class transmission demonstration in multi-mode fibers. This was enabled by combining three key technologies: a wideband optical comb-based transmitter to generate highly spectral efficient 64-quadrature-amplitude modulated signals between 1528 nm and 1610 nm wavelength, a broadband mode-multiplexer, based on multi-plane light conversion, and a 15-mode multi-mode fiber with optimized transmission characteristics for wideband operation.

Date: 2021
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DOI: 10.1038/s41467-021-24409-w

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