Single-shot observations of modulation instability in optical fibres : full complex field acquisition and space-time evolution

Stephane Randoux
Laboratoire de Physique des Lasers, Atomes et Molecules (PhLAM), Université de Lille, Cité Scientifique, 59655 Villeneuve d'Ascq
Light propagating in optical fibers might undergo a modulation instability which leads to the break-up of a continuous wave field. In this presentation, we review recent experiments where both the intensity and phase of the field are recorded at the output of a fiber thanks to an improved temporal imaging system, showing in details the formation of ultra-fast nonlinear structures. We also show how the spatio-temporal evolution of the intensity can be revealed using a recirculating fiber loop.