The input power-induced transformation of the transverse intensity profile at the output of
graded-index multimode optical fibers from speckles into a bell-shaped beam sitting on a …

Since its first demonstration in graded-index multimode fibers, spatial beam self-cleaning
has attracted a growing research interest. It allows for the propagation of beams with a bell …

We report on the thermalization of light carrying orbital angular momentum in multimode
optical fibers, induced by nonlinear intermodal interactions. A generalized Rayleigh-Jeans …

In this paper, the stochastic 2-dimensional nonlinear Schrödinger equation with
multiplicative Brownian motion is investigated. This equation deals with beam propagation …

Multimode fibers (MMFs) are gaining renewed interest for nonlinear effects due to their high-
dimensional spatiotemporal nonlinear dynamics and scalability for high power. High …

Recent studies have shown that light propagating in a nonlinear, highly multimode system
can thermalize in a manner totally analogous to that encountered in traditional statistical …

We experimentally and numerically study the ignition of helical-shaped plasma filaments in
standard optical fibers. Femtosecond pulses with megawatt peak power with proper off-axis …

Atoms ionization by the simultaneous absorption of multiple photons has found applications
in fiber optics, where it leads to unique nonlinear phenomena. To date, studies of the …

In our experiments, we reveal a so-far unnoticed power limitation of beam self-cleaning in
graded-index nonlinear multimode optical fibers. As the optical pulse power is progressively …

In spite of their ubiquitous applications, the characterization of glass fibers by means of all-
optical techniques is still facing some limitations. Recently, X-ray absorption has been …