[HTML][HTML] Distributed Raman amplification for fiber nonlinearity compensation in a mid-link optical phase conjugation system

M Tan, P Rosa, TT Nguyen, MAZ Al-Khateeb, MA Iqbal… - Sensors, 2022 - mdpi.com
In this paper, we review different designs of distributed Raman amplifiers which have been
proposed to minimize the signal power profile asymmetry in mid-link optical phase …

Low complexity neural network equalization based on multi-symbol output technique for 200+ Gbps IM/DD short reach optical system

B Sang, W Zhou, Y Tan, M Kong, C Wang… - Journal of Lightwave …, 2022 - opg.optica.org
Nowadays, Neural network (NN) has been proved to be an effective solution for nonlinear
equalization in short reach optical systems. However, recent research has mainly focused …

Multi-symbol output long short-term memory neural network equalizer for 200+ Gbps IM/DD system

B Sang, J Zhang, C Wang, M Kong… - 2021 European …, 2021 - ieeexplore.ieee.org
We propose a single-lane 212Gbps IM/DD PAM-4 system with a novel Multi-Symbol Output
LSTM equalizer that performs much better than FFE&VNE and single-symbol output LSTM …

Edge-Carrier-Assisted Phase Retrieval At Low CSPR and Low Dispersion Diversity With Deep Learning

D Orsuti, M Santagiustina, A Galtarossa… - Journal of Lightwave …, 2023 - ieeexplore.ieee.org
We investigate the performance of deep learning in recovering the complex-valued field of a
weak-carrier-assisted single side-band signal from two intensity measurements that are …

Joint modulation format recognition and optical performance monitoring for efficient fiber-optic communication links using ensemble deep transfer learning

K Sindhumitha, RK Jeyachitra… - Optical …, 2022 - spiedigitallibrary.org
We propose an ensemble deep transfer learning (EDTL) method, which is a more refined
multilayer feature extraction achieved by aggregating the convolutional layers of pretrained …

[HTML][HTML] Raman amplification optimization in short-reach high data rate coherent transmission systems

M Tan, MA Iqbal, TT Nguyen, P Rosa, L Krzczanowicz… - Sensors, 2021 - mdpi.com
We compared the transmission performances of 600 Gbit/s PM-64QAM WDM signals over
75.6 km of single-mode fibre (SMF) using EDFA, discrete Raman, hybrid Raman/EDFA, and …

Constellation-based identification of linear and nonlinear OSNR using machine learning: a study of link-agnostic performance

HJ Cho, D Lippiatt, VA Thomas, S Varughese… - Optics …, 2022 - opg.optica.org
We demonstrate accurate estimation of generalized optical signal to noise ratio (GOSNR) for
wavelength division multiplexed fiber communication systems using an experimentally …

[HTML][HTML] A novel nonlinear equalizer for probabilistic shaping 64-QAM based on constellation segmentation and support vector machine

H Xu, Y Wang, X Wang, C Li, X Huang, Q Zhang - Electronics, 2022 - mdpi.com
The probability distribution of probabilistic shaping 64 quadrature amplitude modulation (PS-
64QAM) is uneven. The traditional M-ary support vector machine (SVM) algorithm is …

Kernel adaptive filtering-based phase noise compensation for pilot-free optical phase conjugated coherent systems

S Boscolo, TT Nguyen, AAI Ali, S Sygletos, AD Ellis - Optics Express, 2022 - opg.optica.org
We propose a kernel-based adaptive filtering method to suppress the phase noise (PN)
arising from small deviations from ideal counter-phasing in the dual-pump fibre-based …

Demonstration of IM/DD 3-Tbit/s PS-PAM8 transmission with wavelength and mode multiplexing based on neural network equalizer

Q Chen, K Liu, L Zhao, H Wen - Optics & Laser Technology, 2024 - Elsevier
We experimentally demonstrate 8-channel wavelength division multiplexing (WDM) signal
transmission in 4 modes over 20-m multimode fiber (MMF) in an intensity modulation and …