Optical Solitons and Frequency Comb Generation - Abstract

Genty, Goëry

Real-time characterization of nonlinear instabilities in optical fibre systems

The study of instabilities in optics has attracted significant interest over the past few years. This is partly due to their ubiquitous nature and universal physical character but also to the many dramatic progress in the real-time measurement of ultrafast optical signals. Real-time studies have been performed either in the in the spectral domain with sub-nm resolution using the time-stretch technique, or in the time domain using a time lens approach to obtain sub-picosecond resolution. In nonlinear optical fibres, these real-time techniques have been applied to characterize the propagation of intense fields in the nonlinear regime, allowing e.g. to get insight into the statistical properties modulation instability and supercontinuum generation or into the dynamics of optical turbulences and complex dissipative systems. In this talk, we will review our recent work in this area, including the use of machine learning to obtain time-domain information from real-time spectral intensity measurements as well as the observation of a range of instability processes in dissipative systems such as the soliton-similariton laser.