Suppression of beating noise of narrow-linewidth erbium-doped fiber ring lasers by use of a semiconductor optical amplifier

Lei Xu, Ivan Glesk, Varghese Baby, Paul R. Prucnal

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Beating noise in narrow-linewidth erbium-doped fiber ring lasers puts severe limitations on applications of the lasers. We demonstrate the suppression of beating noise in fiber ring lasers by using a semiconductor optical amplifier in the laser cavity, which acts as a high-pass filter. Two different ring structures are presented as examples to demonstrate this beating noise suppression.

Original languageEnglish
Pages (from-to)780-782
Number of pages3
JournalOptics Letters
Issue number10
Publication statusPublished - 15 May 2003


  • optical amplifier
  • fiber ring lasers
  • semiconductor optical amplifier

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