Abstract
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).
| Original language | English |
|---|---|
| Article number | 9317695 |
| Pages (from-to) | 2358-2367 |
| Number of pages | 10 |
| Journal | Journal of Lightwave Technology |
| Volume | 39 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 15 Apr 2021 |
Funding
Manuscript received November 23, 2020; revised December 28, 2020; accepted January 5, 2021. Date of publication January 8, 2021; date of current version April 16, 2021. This work was supported by the Dutch NWO Gravitation Program on Research Center for Integrated Nanophotonics under Grant GA 024.002.033. (Corresponding author: Sjoerd vanderHeide.) Sjoerd van der Heide, Ton Koonen, and Chigo Okonkwo are with the High Capacity Optical Transmission Laboratory, Electro-Optical Communications Group, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands (e-mail: [email protected]; [email protected]; [email protected]).
Keywords
- Field programmable gate arrays
- field trial
- GPU
- Graphics processing units
- Instruction sets
- Kernel
- Kramers-Kronig
- Optical receivers
- Real-time
- Real-time systems
- Signal processing