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Tous sur la vague !

par Webmestre - publié le , mis à jour le

NoAWE is one of the 28 research project selected by ANR (@RAction program, 2014) in order to host high level foreign scientists. The principal investigator (Matteo Conforti) will be supplied with 576.000 euros for three years to develop his research at PhLAM laboratory of CNRS - University of Lille. This is a project of Labex CEMPI and Equipex FLUX.

More details

The understanding of the generation and development of abnormal wave events is considered nowadays as one of the major challenges for public policy and scientific research worldwide. Perhaps the most well-known example of extreme events concerns the destructive giant “rogue” or “freak” waves that appear on the surface of the open ocean. NoAWE project is devoted to the study of the development of waves with extreme features, in different branches of science, with particular emphasis on nonlinear optics and laser physics. The focus is mainly on two processes, namely Rogue Waves, that is the generation of waves of unexpectedly high amplitude, and Dispersive Shock Waves, that is the evolution of steep fronts towards a discontinuity (wave breaking), followed by a regularization through fast oscillations. Rogue and Shock waves are quite ubiquitous phenomena in nonlinear physics and they are encountered in several physical settings, the most known being fluid dynamics and oceanography.

The purpose of the project is twofold. The first goal is a theoretical description of extreme events in different physical settings, to give a unified view of these phenomena. The second is to exploit the unique test-bed offered by nonlinear optics and photonics, to experimentally analyze these processes in an easier and safer way with respect, for example, to oceanography. In particular, the optical fiber manufacturing platform FiberTech will be used to realize waveguides with unique properties, including fiber called "topographic" where their longitudinal properties are modulated. This new family of optical fibers, a specialty of Lille, allows a new degree of freedom we will exploit to develop experimental devices aspiring to validate the theoretical findings.

The results of this project will be useful for a better understanding of the nature of extreme events in several physical scenarios, the most important being optics and water waves. On the applications side, they can lead to novel approaches for the implementation of high-power and ultra-short pulse laser systems.

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