Neural networks for computing and denoising the continuous nonlinear Fourier spectrum in focusing nonlinear Schrödinger equation

EV Sedov, PJ Freire, VV Seredin, VA Kolbasin… - Scientific Reports, 2021 - nature.com
We combine the nonlinear Fourier transform (NFT) signal processing with machine learning
methods for solving the direct spectral problem associated with the nonlinear Schrödinger …

Decision-feedback detection strategy for nonlinear frequency-division multiplexing

S Civelli, E Forestieri, M Secondini - Optics express, 2018 - opg.optica.org
By exploiting a causality property of the nonlinear Fourier transform, a novel decision-
feedback detection strategy for nonlinear frequency-division multiplexing (NFDM) systems is …

125 Gbps pre-compensated nonlinear frequency-division multiplexed transmission

ST Le, V Aref, H Buelow - 2017 European Conference on …, 2017 - ieeexplore.ieee.org
Template for Papers ECOC 2010 Page 1 125 Gbps Pre-Compensated Nonlinear Frequency-Division
Multiplexed Transmission Son T. Le*, Vahid Aref and Henning Buelow Nokia-Bell-Labs …

Correlated eigenvalues of multi-soliton optical communications

WQ Zhang, T Gui, Q Zhang, C Lu, TM Monro… - Scientific reports, 2019 - nature.com
There is a fundamental limit on the capacity of fibre optical communication system (Shannon
Limit). This limit can be potentially overcome via using Nonlinear Frequency Division …

Unsupervised and supervised machine learning for performance improvement of NFT optical transmission

O Kotlyar, M Pankratova, M Kamalian… - 2018 IEEE British …, 2018 - ieeexplore.ieee.org
We apply both the unsupervised and supervised machine learning (ML) methods, in
particular, the k-means clustering and support vector machine (SVM) to improve the …

Improvement for a full-spectrum modulated nonlinear frequency division multiplexing transmission system

J Wei, L Xi, X Zhang, J Deng, R Zhang, S Du… - Optics …, 2022 - opg.optica.org
Nonlinear frequency division multiplexing (NFDM), as a possible technique to overcome the
limit imposed by Kerr nonlinearity in conventional coherent optical communication systems …

Capacity lower bounds of the noncentral chi-channel with applications to soliton amplitude modulation

NA Shevchenko, SA Derevyanko… - IEEE Transactions …, 2018 - ieeexplore.ieee.org
The channel law for amplitude-modulated solitons transmitted through a nonlinear optical
fiber with ideal distributed amplification and a receiver based on the nonlinear Fourier …

On the capacity of amplitude modulated soliton communication over long haul fibers

Y Chen, I Tavakkolnia, A Alvarado, M Safari - Entropy, 2020 - mdpi.com
The capacity limits of fiber-optic communication systems in the nonlinear regime are not yet
well understood. In this paper, we study the capacity of amplitude modulated first-order …

Signaling on the continuous spectrum of nonlinear optical fiber

I Tavakkolnia, M Safari - Optics express, 2017 - opg.optica.org
This paper studies different signaling techniques on the continuous spectrum (CS) of
nonlinear optical fiber defined by nonlinear Fourier transform. Three different signaling …

Improved soliton amplitude estimation via the continuous spectrum

Q Zhang, FR Kschischang - Journal of Lightwave Technology, 2019 - opg.optica.org
In soliton communication systems, the continuous nonlinear spectrum, ideally zero, is
conventionally ignored at the receiver. In this paper, we exploit correlation between the …