Mode-hopping suppression in long Brillouin fiber laser with non-resonant pumping

Mode-hopping suppression in long Brillouin fiber laser with non-resonant pumping

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 Bril...

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Veröffentlicht in:Optics letters 2016-05, Vol.41 (10), p.2362-2365
Hauptverfasser: Danion, Gwennaël, Frein, Ludovic, Bacquet, Denis, Pillet, Grégoire, Molin, Stéphanie, Morvan, Loïc, Ducournau, Guillaume, Vallet, Marc, Szriftgiser, Pascal, Alouini, Mehdi
Format: Artikel
Sprache:eng
Schlagworte:
Brillouin zone
Fiber lasers
Fluid flow
Noise levels
Optical pumping
Oscillators
Phase locked loops
Physics
Slopes
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Beschreibung
Zusammenfassung: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.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.41.002362