Effective handling of nonlinear distortions in CO-OFDM using affinity propagation clustering

Jinlong Wei; Elias Giacoumidis; Ji Zhou; Mutsam A. Jarajreh; Shi Li; Ivan Aldaya; Yandong Lu; Athanasios Tsokanos; Andre Richter

doi:10.1364/OE.454468

Effective handling of nonlinear distortions in CO-OFDM using affinity propagation clustering

Jinlong Wei, Elias Giacoumidis, Ji Zhou, Mutsam A. Jarajreh, Shi Li, Ivan Aldaya, Yandong Lu, Athanasios Tsokanos, Andre Richter

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Abstract

We experimentally demonstrate a system-agnostic and training-data-free nonlinearity compensator, using affinity propagation (AP) clustering in single- and multi-channel coherent optical OFDM (CO-OFDM) for up to 3200 km transmission. We show that AP outperforms benchmark deterministic and clustering algorithms by effectively tackling stochastic nonlinear distortions and inter-channel nonlinearities. AP offers up to almost 4 dB power margin extension over linear equalization in single-channel 16-quadrature amplitude-modulated CO-OFDM and a 1.4 dB increase in Q-factor over digital back-propagation in multi-channel quaternary phase-shift keying CO-OFDM. Simulated results indicate transparency to higher modulation format orders and better efficiency when a multi-carrier structure is considered.

Original language	English
Pages (from-to)	15697-15707
Number of pages	11
Journal	Optics Express
Volume	30
Issue number	9
DOIs	https://doi.org/10.1364/OE.454468
Publication status	Published - 22 Apr 2022

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© 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
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abstract = "We experimentally demonstrate a system-agnostic and training-data-free nonlinearity compensator, using affinity propagation (AP) clustering in single- and multi-channel coherent optical OFDM (CO-OFDM) for up to 3200 km transmission. We show that AP outperforms benchmark deterministic and clustering algorithms by effectively tackling stochastic nonlinear distortions and inter-channel nonlinearities. AP offers up to almost 4 dB power margin extension over linear equalization in single-channel 16-quadrature amplitude-modulated CO-OFDM and a 1.4 dB increase in Q-factor over digital back-propagation in multi-channel quaternary phase-shift keying CO-OFDM. Simulated results indicate transparency to higher modulation format orders and better efficiency when a multi-carrier structure is considered.",

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AU - Wei, Jinlong

AU - Giacoumidis, Elias

AU - Zhou, Ji

AU - Jarajreh, Mutsam A.

AU - Li, Shi

AU - Aldaya, Ivan

AU - Lu, Yandong

AU - Tsokanos, Athanasios

AU - Richter, Andre

PY - 2022/4/22

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N2 - We experimentally demonstrate a system-agnostic and training-data-free nonlinearity compensator, using affinity propagation (AP) clustering in single- and multi-channel coherent optical OFDM (CO-OFDM) for up to 3200 km transmission. We show that AP outperforms benchmark deterministic and clustering algorithms by effectively tackling stochastic nonlinear distortions and inter-channel nonlinearities. AP offers up to almost 4 dB power margin extension over linear equalization in single-channel 16-quadrature amplitude-modulated CO-OFDM and a 1.4 dB increase in Q-factor over digital back-propagation in multi-channel quaternary phase-shift keying CO-OFDM. Simulated results indicate transparency to higher modulation format orders and better efficiency when a multi-carrier structure is considered.

AB - We experimentally demonstrate a system-agnostic and training-data-free nonlinearity compensator, using affinity propagation (AP) clustering in single- and multi-channel coherent optical OFDM (CO-OFDM) for up to 3200 km transmission. We show that AP outperforms benchmark deterministic and clustering algorithms by effectively tackling stochastic nonlinear distortions and inter-channel nonlinearities. AP offers up to almost 4 dB power margin extension over linear equalization in single-channel 16-quadrature amplitude-modulated CO-OFDM and a 1.4 dB increase in Q-factor over digital back-propagation in multi-channel quaternary phase-shift keying CO-OFDM. Simulated results indicate transparency to higher modulation format orders and better efficiency when a multi-carrier structure is considered.

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Effective handling of nonlinear distortions in CO-OFDM using affinity propagation clustering

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