Periodic nonlinear Fourier transform for fiber-optic communications, Part I: theory and numerical methods

M Kamalian, JE Prilepsky, ST Le, SK Turitsyn - Optics express, 2016 - opg.optica.org
In this work, we introduce the periodic nonlinear Fourier transform (PNFT) method as an
alternative and efficacious tool for compensation of the nonlinear transmission effects in …

High speed precompensated nonlinear frequency-division multiplexed transmissions

ST Le, V Aref, H Buelow - Journal of Lightwave Technology, 2017 - ieeexplore.ieee.org
Nonlinear frequency division multiplexing (NFDM) with the modulation of the nonlinear
Fourier spectrum (both discrete and/or continuous parts) have been recently considered as …

Enhancing the spectral efficiency of nonlinear frequency division multiplexing systems via Hermite-Gaussian subcarriers

M Balogun, S Derevyanko - Journal of Lightwave Technology, 2022 - opg.optica.org
The nonlinear frequency division multiplexing (NFDM) is a promising concept in the field of
optical fiber communications. Based on a well established mathematical technique of the …

Channel model for the dual-polarization b-modulated nonlinear frequency-division multiplexing optical transmission systems

SA Derevyanko, JE Prilepsky - Optics Express, 2023 - opg.optica.org
We consider optical transmission systems based on the nonlinear frequency division
multiplexing (NFDM) concept, ie, the systems employing the nonlinear Fourier transform …

Nonlinear random optical waves: Integrable turbulence, rogue waves and intermittency

S Randoux, P Walczak, M Onorato, P Suret - Physica D: Nonlinear …, 2016 - Elsevier
We examine the general question of statistical changes experienced by ensembles of
nonlinear random waves propagating in systems ruled by integrable equations. In our study …

Frequency offset estimation for nonlinear frequency division multiplexing with continuous spectrum modulation

Y He, J Li, J He, Y Qin, X Yu, N Lin, G Zhou, M Xiang… - Optics …, 2023 - opg.optica.org
Carrier frequency offset (CFO) estimation is very important for the optical fiber
communications and has been studied widely in linear coherent systems, while only a few …

New approaches to coding information using inverse scattering transform

LL Frumin, AA Gelash, SK Turitsyn - Physical Review Letters, 2017 - APS
Remarkable mathematical properties of the integrable nonlinear Schrödinger equation
(NLSE) can offer advanced solutions for the mitigation of nonlinear signal distortions in …

Nonlinear inverse synthesis for optical links with distributed Raman amplification

ST Le, JE Prilepsky, P Rosa… - Journal of Lightwave …, 2015 - ieeexplore.ieee.org
Nonlinear Fourier transform (NFT) and eigenvalue communication with the use of nonlinear
signal spectrum (both discrete and continuous) have been recently discussed as a …

Capacity analysis of signaling on the continuous spectrum of nonlinear optical fibers

I Tavakkolnia, M Safari - Journal of Lightwave Technology, 2017 - opg.optica.org
This paper investigates the capacity of signaling on the continuous spectrum (CS) of optical
fibers as defined by the nonlinear Fourier transform (NFT). The channel model of such NFT …

Probabilistic shaping and neural network-based optimization for a nonlinear frequency division multiplexing system

J Wei, L Xi, X Zhang, J Deng, S Du, X Zhang… - Optics letters, 2021 - opg.optica.org
A joint scheme introducing probabilistic shaping (PS) at the transmitter and utilizing a neural
network (NN) equalizer at the receiver is proposed to improve the performance of the b …