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

2025/10/18 by Rômulo Aparecido, Aparecido, Romulo, Jiaqian Yang +25
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Electrical engineering #Optical Network Technologies #Photonic Crystal and Fiber Optics #Signal Processing (eess.SP) #Systems and Control (eess.SY) #electronic engineering #information engineering

paper · pdf · doi:10.48550/arxiv.2510.16482

openalex publication_date 2025/10/18 · openalex created_date 2025/10/22 · openalex updated_date 2026/07/28

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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