title: Observation of acoustically induced modulation instability in a Brillouin photonic crystal fiber laser.
abstract: We report the experimental observation of self-induced modulation instability (MI) in a Brillouin fiber laser made with a solid-core photonic crystal fiber (PCF) with strong anomalous dispersion. We identify this MI as the result of parametric amplification of optical sidebands generated by guided acoustic modes within the core of the PCF. It is further shown that MI leads to passive harmonic mode locking and to the generation of a picosecond pulse train at a repetition rate of 1.15 GHz which matches the acoustic frequency of the fundamental acoustic mode of the PCF.
authors: Institut FEMTO-ST, Département d’Optique, UMR 6174 CNRS-Université de Franche-Comté, Besançon 25000, France. birgit.stiller@mpl.mpg.de
authors: Birgit
authors: B
authors: Stiller
authors: Thibaut
authors: T
authors: Sylvestre