A self-consistent model for a SOA-based fiber ring laser including the mode-locked pulse properties

Vasilios Zarikas, Kyriakos Vlachos

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In this paper, we present a self-consistent model of an optically mode-locked semiconductor fiber ring laser. The fiber laser uses a semiconductor optical amplifier (SOA) as the gain medium, while mode-locking is achieved by its gain modulation, via an external optical pulsed signal. We solved the model analytically developing a novel technique, where we have assumed double saturation of the SOA by both the mode-locked and the externally introduced pulsed signal. The study revealed the locus of the laser parameters to achieve mode-locking. In particular, it was found that SOA gain and energy of the externally introduced signal are two critical parameters that must simultaneously set properly for exact mode-locking. Another outcome of our analysis is that the study of the chirp parameter should be carried out keeping the nonlinear terms of the SOA gain. We have also investigated a slightly detuning regime of operation that revealed a fast change of the mode-locking process.

Original languageEnglish
Pages (from-to)239-248
Number of pages10
JournalOptics Communications
Issue number2
Publication statusPublished - Jul 15 2006


  • Mode-locking
  • Optical gain modulation
  • Ring laser
  • Semiconductor optical amplifier

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


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