Communication using the optical fibre channel can be challenging due to nonlinear effects
that arise in the optical propagation. These effects represent physical processes that …

The Covid-19 pandemic showed forcefully the fundamental importance broadband data
communication and the internet has in our society. Optical communications forms the …

Data-driven optimization of transmitters and receivers can reveal new modulation and
detection schemes and enable physical-layer communication over unknown channels …

We consider the problem of estimating an upper bound on the capacity of a memoryless
channel with unknown channel law and continuous output alphabet. A novel data-driven …

The capacity of a discrete-time model of optical fiber described by the split-step Fourier
method (SSFM) as a function of the signal-to-noise ratio SNR and the number of segments …

The standard solution for short-haul fiber-optic communications is to deploy noncoherent
systems, ie, to modulate and detect only the light intensity. In such systems, the signal is …

The limit of a discrete-time model of the optical fiber described by the split-step Fourier
method (SSFM) when the number of segments in distance K tends to infinity is considered. It …

It is known that fiber nonlinearities induce crosstalk in a wavelength division multiplexed
(WDM) system, which limits the capacity of such systems as the transmitted signal power is …

In the present paper we summarize the methods and results of calculations for the
theoretical informational quantities obtained in our works for the nondispersive optical fiber …

To overcome the increasing demands for Internet traffic, exploiting the available degrees of
freedom in optical communication systems is necessary. In this thesis, we study how …