Nonlinear Fourier transform (NFT) and eigenvalue communication with the use of nonlinear
signal spectrum (both discrete and continuous) have been recently discussed as a …

The nonlinear inverse synthesis (NIS) method, in which information is encoded directly onto
the continuous part of the nonlinear signal spectrum, has been proposed recently as a …

In linear communication channels, spectral components (modes) defined by the Fourier
transform of the signal propagate without interactions with each other. In certain nonlinear …

We propose a modification of the nonlinear digital signal processing technique based on the
nonlinear inverse synthesis for the systems with distributed Raman amplification. The …

Nonlinear Fourier transform (NFT) based transmission technique relies on the integrability of
the nonlinear Schrödinger equation (NLSE). However, the lossless NLSE is not directly …

An accurate, closed-form expression to evaluate the nonlinear interference (NLI) noise
power in Nyquist-spaced, coherent optical communication systems using backward-pumped …

Using the inverse scattering method known for solving partial differential equations such as
nonlinear Schrödinger equation, we analyse a fibre optic communication system which …

A Gaussian noise (GN) model, precisely accounting for an arbitrary frequency dependent
signal power profile along the link, is presented. This allows accurate evaluation of the …

The nonlinear inverse synthesis (NIS) signal coding and processing technique exploits that
the spatial evolution of a signal in lossless optical fiber becomes trivial in the so-called …

Raman amplification is a solution for broadband wavelength-division multiplexed (WDM)
systems that require fine and reconfigurable gain tuning. However, as the fiber nonlinearity …