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Single-Step Digital Backpropagation for O-band Coherent Transmission Systems

Signal Processing 2025-10-21 v1 Systems and Control Systems and Control
Authors: Romulo Aparecido , Jiaqian Yang , Ronit Sohanpal , Zelin Gan , Eric Sillekens , John D. Downie , Lidia Galdino , Vitaly Mikhailov , Daniel Elson , Yuta Wakayama , David DiGiovanni , Jiawei Luo , Robert I. Killey , Polina Bayvel
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Abstract

We demonstrate digital backpropagation-based compensation of fibre nonlinearities in the near-zero dispersion regime of the O-band. Single-step DBP effectively mitigates self-phase modulation, achieving SNR gains of up to 1.6 dB for 50 Gbaud PDM-256QAM transmission over a 2-span 151 km SMF-28 ULL fibre link.

Keywords

digital backpropagation coherent transmission O-band self-phase modulation PDM-256QAM

Cite

@article{arxiv.2510.16482,
  title  = {Single-Step Digital Backpropagation for O-band Coherent Transmission Systems},
  author = {Romulo Aparecido and Jiaqian Yang and Ronit Sohanpal and Zelin Gan and Eric Sillekens and John D. Downie and Lidia Galdino and Vitaly Mikhailov and Daniel Elson and Yuta Wakayama and David DiGiovanni and Jiawei Luo and Robert I. Killey and Polina Bayvel},
  journal= {arXiv preprint arXiv:2510.16482},
  year   = {2025}
}

Comments

conference, 3 pages, 2 figures

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