Revue des Sciences Fondamentales Appliquées
Volume 4, Numéro 1, Pages 46-52
2012-01-01
Brillouin Instability In Fiber Lasers Doped By Power
Auteurs : Bouras D. M. . Kellou A. . Leblond H. . Sanchez F. .
Résumé
With the emergence of rare-earth doped fibers, and especially double-clad fibers, there is a renewed interest in Brillouin effect. First of all, the amplification of a continuous signal in a rare-earth doped fiber amplifier can generate high enough intensities to excite Brillouin effect and then to create a backscattered stokes wave. Such back-reflection is detrimental for amplifier applications and consequently it has been studied theoretically and experimentally. Recently, the low frequency self-pulsing instability resulting from Brillouin backscattering has been theoretically modelled [1]. Our main objective is to present a general model allowing to explain the origin of the dynamic instability arising in a fiber lasers as a consequence of Brillouin effect. The effect of Brillouin back scattering is theoretically analysed by two-coupled modes laser model. We consider the Fabry-Perot fiber laser cavity. The rich and complex dynamic behaviours are observed. In particular the quasi periodic dynamic is identified and studied.
Mots clés
Stimulated Brillouin Scattering; high power fiber lasers, instabilities, quasi periodic.
Les articles similaires
Bouchelaghem Hafida
.
Bezazi Abederrezak
.
Boumaaza Messaouda
.
Benzanache Naziha
.
Scarpa Fabrizio
.
pages 68-75.
Makhloufi S.
.
Mekhaldi A.
.
Teguar M.
.
Saheb-koussa D.
.
Djoudi A.
.
pages 721-732.
B. Merouane
.
M. Sebbani
.
pages 61-65.
Boukheit N
.
Mirouh K
.
Karaali A
.
pages 27-32.
N. Mokdad
.
K Zitouni
.
A. Kadri
.
pages 53-58.
