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arXiv · 2108.07004

Real-time Transmission of Geometrically-shaped Signals using a Software-defined GPU-based Optical Receiver

Sjoerd van der Heide·Ruben S. Luis·Sebastiaan Goossens·Benjamin J. Puttnam·Georg Rademacher·Ton Koonen·Satoshi Shinada·Yoshinari Awaji·Alex Alvarado·Hideaki Furukawa·Chigo Okonkwo
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Abstract

A software-defined optical receiver is implemented on an off-the-shelf commercial graphics processing unit (GPU). The receiver provides real-time signal processing functionality to process 1 GBaud minimum phase (MP) 4-, 8-, 16-, 32-, 64-, 128-ary quadrature amplitude modulation (QAM) as well as geometrically shaped (GS) 8- and 128-QAM signals using Kramers-Kronig (KK) coherent detection. Experimental validation of this receiver over a 91~km field-deployed optical fiber link between two Tokyo locations is shown with detailed optical signal-to-noise ratio (OSNR) investigations. A net data rate of 5 Gbps using 64-QAM is demonstrated.

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Sjoerd van der Heide, Ruben S. Luis, Sebastiaan Goossens, Benjamin J. Puttnam, Georg Rademacher, Ton Koonen, Satoshi Shinada, Yoshinari Awaji, Alex Alvarado, Hideaki Furukawa, Chigo Okonkwo. 2021-08-16. Real-time Transmission of Geometrically-shaped Signals using a Software-defined GPU-based Optical Receiver. https://doi.org/10.1364/oe.450514

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