title: Mode-hopping suppression in long Brillouin fiber laser with non-resonant pumping.
abstract: We propose a reliable method for stabilizing narrow linewidth Brillouin fiber lasers with non-resonant pumping. Mode-hopping is suppressed by means of a phase-locked loop that locks the pump-Stokes detuning to a local radio-frequency (RF) oscillator. Stable single-mode operation of a 110-m-long Brillouin fiber laser oscillating at 1.55 μm is demonstrated for several hours. The beat note between two independent Stokes waves presents a phase noise level of -60  dBc/Hz at 100 Hz with a -20  dB/decade slope, and a FWHM linewidth lower than 50 Hz.
authors.forename: Gwennaël
authors.initials: G
authors.lastname: Danion
authors.forename: Ludovic
authors.initials: L
authors.lastname: Frein
authors.forename: Denis
authors.initials: D
authors.lastname: Bacquet
authors.forename: Grégoire
authors.initials: G
authors.lastname: Pillet
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Molin
authors.forename: Loïc
authors.initials: L
authors.lastname: Morvan
authors.forename: Guillaume
authors.initials: G
authors.lastname: Ducournau
authors.forename: Marc
authors.initials: M
authors.lastname: Vallet
authors.forename: Pascal
authors.initials: P
authors.lastname: Szriftgiser
authors.forename: Mehdi
authors.initials: M
authors.lastname: Alouini