Suppression of stimulated Brillouin scattering effect in fiber amplifiers

Du Wenbo; Wang Xiaolin; Zhu Jiajian; Zhou Pu; Xu Xiaojun; Shu Bohong

doi:10.3788/HPLPB20132503.0598

Volume 25 Issue 03

Mar. 2013

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Du Wenbo, Wang Xiaolin, Zhu Jiajian, et al. Suppression of stimulated Brillouin scattering effect in fiber amplifiers[J]. High Power Laser and Particle Beams, 2013, 25: 598-602. doi: 10.3788/HPLPB20132503.0598

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Du Wenbo, Wang Xiaolin, Zhu Jiajian, et al. Suppression of stimulated Brillouin scattering effect in fiber amplifiers[J]. High Power Laser and Particle Beams, 2013, 25: 598-602. doi: 10.3788/HPLPB20132503.0598

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Suppression of stimulated Brillouin scattering effect in fiber amplifiers

doi: 10.3788/HPLPB20132503.0598

1.
College of Opto-electric Science and Engineering,National University of Defense Technology,Changsha 410073,China

Received Date: 2012-03-10
Rev Recd Date: 2012-11-14
Publish Date: 2013-03-05

Abstract

Abstract

A multi-tone narrow-linewidth fiber amplifier is demonstrated. In this kind of amplifier the seed laser is attained by combining several single frequency seed lasers which all have nearly the same wavelength (wavelength separation less than 1 nm) and with frequency difference larger than twice the Brillouin shift. An integrated theoretical model of this kind of amplifier is set up. Relationship between stimulated Brillouin scattering(SBS) and the number of the seeds is analyzed using this model. Two-tone and three-tone amplifiers are set up to study SBS threshold output power experimentally. The experimental results are in good agreement with theoretical results, revealing rationality of the theoretical model. Two-tone and three-tone amplifications can suppress SBS effectively and enhance output powers of narrow-linewidth fiber amplifiers greatly.
- fiber amplifier,
- stimulated Brillouin scattering suppression,
- multi-tone amplification,
- narrow linewidth

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