Field Trial of a Flexible Real-time Software-defined GPU-based Optical Receiver

We introduce a flexible, software-defined real-time multi-modulation format receiver implemented on an off-the-shelf general-purpose graphics processing unit (GPU). The flexible receiver is able to process 2 GBaud 2-, 4-, 8-, and 16-ary pulse-amplitude modulation (PAM) signals as well as 1 GBaud 4-, 16- and 64-ary quadrature amplitude modulation (QAM) signals, with the latter detected using a Kramers-Kronig (KK) coherent receiver. Experimental performance evaluation is shown for back-to-back. In addition, by using the JGN high speed R&D network testbed, performance is evaluated after transmission over 91 km field-deployed optical fiber and reconfigurable optical add-drop multiplexers (ROADMs).Comment: Accepted for publication at Journal of Lightwave Technology, already available via JLT Early Access, see supplied DOI. This v2 version of the article is improved w.r.t. v1 after JLT peer-review. This article is a longer journal version of the conference paper: S.P. van der Heide, et al., Real-time, Software-Defined, GPU-Based Receiver Field Trial, ECOC 2020 paper We1E5, also via arXiv:2010.1433

Real-Time Optical Transmission with GPU-Based DSP

A real-time receiver with GPU-based digital signal processing is demonstrated using only commercial off-the-shelf equipment. Both intensity-modulated directly-detected PAM-N signals are supported as well as minimum-phase N-QAM signals using Kramers-Kronig coherent detection

10,000 km Straight-line Transmission using a Real-time Software-defined GPU-Based Receiver

Real-time operation of a software-defined, GPU-based optical receiver is demonstrated over a 100-span straight-line optical link. Performance of minimum-phase Kramers-Kronig 4-, 8-, 16-, 32-, and 64-QAM signals are evaluated at various distances

Real-time, Software-defined, GPU-Based Optical Receiver

By exploiting an off-the-shelf GPU, real-time digital signal processing for intensity-modulated directly-detected PAM-N formats and Kramers-Kronig coherent QAM-N formats is performed. We demonstrate transmission over 91 km of field-deployed fiber and a 10;000 km straight-line link.

Real-Time Optical Transmission with GPU-Based DSP

A real-time receiver with GPU-based digital signal processing is demonstrated using only commercial off-the-shelf equipment. Both intensity-modulated directly-detected PAM-N signals are supported as well as minimum-phase N-QAM signals using Kramers-Kronig coherent detection.</p

Real-Time 10,000 km Straight-Line Transmission Using a Software-Defined GPU-Based Receiver

Real-time 10,000 km transmission over a straight-line link is achieved using a software-defined multi-modulation format receiver implemented on a commercial off-the-shelf general-purpose graphics processing unit (GPU). Minimum phase 1 GBaud (QAM) signals are transmitted over 10,000 km and successfully received after detection with a Kramers-Kronig (KK) coherent receiver. 8-, 16-, 32-, and 64-QAM are successfully transmitted over 7600, 5600, 3600, and 1600 km, respectively

Real-time, Software-defined, Multi-modulation Format, GPU-based Receiver

Real-time digital signal processing for IM/DD PAM-N and Kramers-Kronig coherent N-QAM is implemented on a commercial off-the-shelf GPU. Transmission over 91 km of field-deployed fiber and a 10,000 km straight-line link is demonstrated

Real-time, Software-defined, Multi-modulation Format, GPU-based Receiver

Real-time digital signal processing for IM/DD PAM-N and Kramers-Kronig coherent N-QAM is implemented on a commercial off-the-shelf GPU. Transmission over 91 km of field-deployed fiber and a 10,000 km straight-line link is demonstrated.</p