Piero Bosio Social Web Site Personale

#PhysicsFactlet I haven't made a single scientific animation in months. I just don't have the mental space right now.But I am preparing a series of lectures on scattering for the Plasmonica 2026 School (https://www.plasmonica.it/2026school/), and it feels like a good excuse to make a few new ones.This one shows a simple finite element simulation of a pulse scattering on a small dielectric obstacle.#Physics #Optics #Scattering #Diffraction

Paper accepted! 🥳 "Explaining and exploiting the radial memory effect in multimode optical fibres"(A slightly older version is on ArXiv: https://arxiv.org/abs/2508.11389 )When (coherent) light propagates in a multimode fibre, each mode accumulates a slightly different phase, so the output looks like a random speckle patter.But it is NOT random! This non-randomness has a number of consequences, among them the fact that the you get predictable patterns in the apparently random output. We show that a focused input will always result in a ring of excess intensity at the same radius of the input, we give a simple but rigorous explanation of why this happens, and suggest how this might be useful in practice.#Optics #OpticalFibers #SpeckleCorrelations