Cascaded gain fibers for increasing output power and the stimulated brillouin scattering threshold of narrow linewidth fiber Raman amplifiers

J. A. Nagel, V. Temyanko, J. T. Dobler, M. E. Likhachev, M. M. Bubnov, E. M. Dianov, N. Peyghambarian

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

We show both experimentally and theoretically a method to increase the stimulated Brillouin scattering (SBS) threshold and output power of narrow linewidth fiber Raman amplifiers. This method employs two or more fibers with varying concentrations of the Raman gain material dopant such as GeO2 or P2 O5 in silicatebased glasses. These fibers are then cascaded to form an amplifier gain stage, disrupting the buildup of SBS that normally occurs in single continuous fibers. The numerical model shown is applicable to arbitrary amplifier systems for gain stage optimization and increased power scaling. We give experimental results for phosphosilicate fibers that agree well with simulation predictions that support the numerical model used.

Original languageEnglish (US)
Pages (from-to)4066-4072
Number of pages7
JournalApplied optics
Volume55
Issue number15
DOIs
StatePublished - May 20 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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