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arXiv · 2510.16482

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

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.

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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. 2025-10-18. Single-Step Digital Backpropagation for O-band Coherent Transmission Systems. https://arxiv.org/abs/2510.16482

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