Abstract

Uniform passive fiber-ring cavities are macroscopic devices which are known to exhibit dissipative modulation instability (MI) when driven in the rather large dispersion regime [1]. In a previous study we showed that in this regime, a simple modulation of the dispersion along the length of the ring cavity is responsible for the appearance of a new domain of parametric instability, related to Faraday instabilities [2], which has been confirmed experimentally [3]. In the present work we study experimentally a modulated cavity but pumped in the vicinity of one of its zero-dispersion wavelength (ZDW). In this case we show that, like in simple propagation [4], higher order dispersion terms up to β₄ have to be taken into account. In our case, broad MI spectra are generated, composed of a large number of quasi-phase-matched sidebands.

© 2017 IEEE