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 language | English |
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Pages (from-to) | 3455-3459 |
Number of pages | 5 |
Journal | Applied Optics |
Volume | 48 |
Issue number | 18 |
DOIs | |
Publication status | Published - 11 Jun 2009 |
Bibliographical note
© 2009 Optical Society of AmericaKeywords
- photonics
- erbium-doped fiber laser
- EDFL
- tilted fiber gratings
- TFGs