Single- and dual-wavelength switchable erbium-doped fiber ring laser based on intracavity polarization selective tilted fiber gratings

Chengbo Mou, Pouneh Saffari, Hongyan Fu, Kaiming Zhou, Lin Zhang, Ian Bennion

Research output: Contribution to journalArticle

Abstract

We propose and demonstrate a single- and dual-wavelength switchable erbium-doped fiber laser (EDFL) by utilizing intracavity polarization selective filters based on tilted fiber gratings (TFGs). In the cavity, one 45° TFG functions as an in-fiber polarizer and the other 77° TFG is used as a fiber polarization dependent loss (PDL) filter. The combined polarization effect from these two TFGs enables the laser to switch between the single- and the dual-wavelength operation with a single-polarization state at room temperature. The laser output at each wavelength shows an optical signal-to-noise ratio (OSNR) of >60 dB, a side mode suppression ratio (SMSR) of >50 dB, and a polarization extinction ratio of ~35 dB. The proposed EDFL can give stable output under laboratory conditions.
Original languageEnglish
Pages (from-to)3455-3459
Number of pages5
JournalApplied Optics
Volume48
Issue number18
DOIs
Publication statusPublished - 11 Jun 2009

Bibliographical note

© 2009 Optical Society of America

Keywords

  • photonics
  • erbium-doped fiber laser
  • EDFL
  • tilted fiber gratings
  • TFGs

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