Deep learning-assisted nonlinearity compensation in subcarrier-multiplexing coherent optical systems

WS Saif, SKO Soman, OA Dobre - Journal of Lightwave …, 2024 - ieeexplore.ieee.org
Fiber nonlinearity imposes limitations on the transmission distances in optical fiber networks.
Fiber nonlinearity compensation (NLC) becomes essential for extending the transmission …

Imbalanced digital back-propagation for nonlinear optical fiber transmissions

X Yi, X Huang, J Zhang, B Xu, F Li, Z Li - Journal of Lightwave …, 2021 - opg.optica.org
In the canonical digital back-propagation (CDBP) of compensating for optical fiber
nonlinearity, the aim is to invert the nonlinear Schrödinger equation (NSE). Therefore, the …

ASIC implementation of time-domain digital back propagation for coherent receivers

C Fougstedt, L Svensson, M Mazur… - IEEE Photonics …, 2018 - ieeexplore.ieee.org
Digital back propagation (DBP) is often proposed and implemented offline for the mitigation
of nonlinear impairments in long-haul fiber communications. However, complexity in terms of …

Leveraging dispersion-aware phase recovery for long-haul digital multi-carrier transmission: An experimental demonstration

MS Neves, A Lorences-Riesgo, CS Martins… - Journal of Lightwave …, 2022 - opg.optica.org
In a subcarrier multiplexing 125 Gbaud DP-PCS-64QAM system with a net bitrate of 800
Gbit/s, we numerically and experimentally study the performance of transmission-aware …

Fiber nonlinearity mitigation and compensation for capacity-approaching optical transmission systems

Q Zhuge, M Fu, H Lun, X Liu… - 2019 Asia Communications …, 2019 - ieeexplore.ieee.org
Fiber Nonlinearity Mitigation and Compensation for Capacity-Approaching Optical
Transmission Systems Page 1 Fiber Nonlinearity Mitigation and Compensation for Capacity-Approaching …

Single-step digital backpropagation for subcarrier-multiplexing transmissions

H Lun, Q Zhuge, Z Xiao, S Fu, M Tang, D Liu, W Hu… - Optics …, 2019 - opg.optica.org
We propose and demonstrate a single-step digital back propagation (DBP) algorithm for
metro and regional transmissions with high order modulation formats. Based on subcarrier …

Perturbation-Aided Fiber Nonlinearity Compensation in Subcarrier-Multiplexing Systems

D Tang, Z Wu, S Liu, J Luo, J Luo… - Journal of Lightwave …, 2023 - ieeexplore.ieee.org
A perturbation-aided advanced digital backpropagation (P-ADBP) is proposed for subcarrier-
multiplexing (SCM) coherent systems. To improve the nonlinearity compensation (NLC) …

A Machine Learning-Based Approach for Nonlinearity Compensation in Subcarrier Multiplexing System

WS Saif, SKO Soman, OA Dobre - 2023 23rd International …, 2023 - ieeexplore.ieee.org
In this paper, we investigate the potential of applying machine learning (ML) technique for
nonlinearity compensation in subcarrier multiplexing (SCM) systems. We propose an …

NSNI mitigation in bi-directional Raman amplified unrepeatered system using split-DBP

Q Zheng, L Huang, W Li, Q Feng… - Journal of Lightwave …, 2018 - ieeexplore.ieee.org
The nonlinear signal-noise interaction (NSNI) is analyzed in the bi-directional Raman
amplified unrepeatered system with digital back-propagation (DBP) algorithm. When the …

Intra-channel nonlinearity compensation based on second-order perturbation theory

OS Kumar, A Amari, OA Dobre… - arXiv preprint arXiv …, 2020 - arxiv.org
The first-order (FO) perturbation theory has been widely investigated to design the digital
nonlinearity compensation (NLC) technique to deal with the intra-channel fiber nonlinearity …