Single-mode erbium fiber dual-ring laser with 60-nm workable wavelength tunability

Y. L. Yang, C. H. Yeh, C. K. Tsai, Y. R. Xie, C. M. Luo, Y. J. Chang, J. H. Chen, Chi Wai Chow

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

In this investigation, to reach a widely wavelength-selectable and stable single-longitudinal-mode (SLM) erbium-doped fiber (EDF) ring laser, the unpumped EDF-based saturable absorber (SA) and dual-ring structure are used simultaneously for thickly multi-longitudinal-mode (MLM) suppression. The dual-ring scheme can spread the operation range of gain medium from 1520.0 to 1580.0 nm only by using a C-band erbium-doped fiber amplifier (EDFA). Moreover, the dual-ring scheme and EDF-based SA also could suppress the MLM noise for SLM oscillation. In the tuning range, the Lorentzian 3 dB linewidth is also obtained between 15 and 22 kHz in the wavelength range.

Original languageEnglish
Pages (from-to)16-19
Number of pages4
JournalOptics and Laser Technology
Volume114
DOIs
StatePublished - 1 Jun 2019

Keywords

  • C-band erbium
  • Fiber laser
  • Single-longitudinal-mode (SLM)

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