Instabilities in passive dispersion oscillating fiber ring cavities

François Copie (1) , Matteo Conforti (1) , Alexandre Kudlinski (1) , Arnaud Mussot (1) , Fabio Biancalana (2) , Stefano Trillo (3)

1 PhLAM - Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523
2 HWU - Heriot-Watt University [Edinburgh]
3 Engineering Department [Ferrara]

We investigate theoretically and experimentally the development of instabilities in passive ring cavities composed of pieces of fiber with different dispersion. We derive an extended version of the Lugiato-Lefever equation that permits to model dispersion oscillating cavity and we demonstrate that this equation is valid well beyond the mean field approximation. We review the theory of Turing (modulational) and Faraday (parametric) instability in inhomogeneous fiber. We report the experimental demonstration of the generation of stable Turing and Faraday pattern in the same device , which can be controlled by changing the detun-ing and/or the input power. Moreover, we experimentally record the round-trip-to-round-trip dynamics of the spectrum, which shows that Turing and Faraday instabilities not only differ by their characteristic frequency but also by their dynamical behavior.

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

François Copie, Matteo Conforti, Alexandre Kudlinski, Arnaud Mussot, Fabio Biancalana, et al.. Instabilities in passive dispersion oscillating fiber ring cavities. The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2017, 71 (5), ⟨10.1140/epjd/e2017-80130-x⟩. ⟨hal-02386245⟩