Dynamics of Turing and Faraday instabilities in a longitudinally modulated fiber-ring cavity

F. Copie (1) , Matteo Conforti (1) , Alexandre Kudlinski (1) , Stefano Trillo (2) , Arnaud Mussot (1)

1 PhLAM - Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523
2 Engineering Department [Ferrara]

We experimentally investigate the roundtrip-to-roundtrip dynamics of the modulation instability spectrum in a passive fiber ring cavity presenting an inhomogeneous dispersion profile. By implementing a real-time spectroscopy technique we are able to record successive single-shot spectra, which display the evolution of the system toward a stationary state. We find that the two instability regimes (Turing and Faraday) that compete in this kind of inhomogeneous cavities not only differ by their characteristic frequency but also by their dynamical behaviour. The dynamic transition between those two regimes of instability is also presented.

Mots clés: fibers; Resonators; Instabilities and chaos; Nonlinear optics

Domaines: Optique [physics.optics]; Formation de Structures et Solitons [nlin.PS]; Optique / photonique

F. Copie, Matteo Conforti, Alexandre Kudlinski, Stefano Trillo, Arnaud Mussot. Dynamics of Turing and Faraday instabilities in a longitudinally modulated fiber-ring cavity. Optics Letters, 2017, 42 (3), pp.435-438. ⟨10.1364/OL.42.000435⟩. ⟨hal-02386359⟩