{"ID":2853414,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2510.16482","arxiv_id":"2510.16482","title":"Single-Step Digital Backpropagation for O-band Coherent Transmission Systems","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.","short_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.","url_abs":"https://arxiv.org/abs/2510.16482","url_pdf":"https://arxiv.org/pdf/2510.16482v1","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\"]","published":"2025-10-18T12:59:47Z","proceeding":"eess.SP","tasks":"[\"eess.SP\",\"eess.SY\"]","methods":"[]","has_code":false}