Modulation instability in the weak dispersion regime of a dispersion modulated passive fiber-ring cavity

François 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 present a theoretical and experimental study of the modulation instability process in a dispersion oscillating passive fiber-ring resonator in the low dispersion region. Generally, the modulation of the dispersion along the cavity length is responsible for the emergence of a regime characterised by multiple parametric resonances (or Faraday instabilities). We show that, under weak dispersion conditions, a huge number of Faraday sidebands can grow under the influence of fourth order dispersion. We specifically designed a piecewise uniform fiber-ring cavity and report on experiments that confirm our theoretical predictions. We recorded the dynamics of this system revealing strong interactions between the different sidebands in agreement with numerical simulations.

Mots clés: Nonlinear optics; Instabilities and chaos; Resonators

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

François Copie, Matteo Conforti, Alexandre Kudlinski, Stefano Trillo, Arnaud Mussot. Modulation instability in the weak dispersion regime of a dispersion modulated passive fiber-ring cavity. Optics Express, 2017, 25 (10), pp.11283. ⟨10.1364/OE.25.011283⟩. ⟨hal-02386346⟩