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Wavelength-switchable single-frequency erbium-doped fiber ring laser

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5 Author(s)
F. Liegeois ; Faculte Polytechnique de Mons, Belgium ; Y. Hernandez ; D. Kinet ; G. Peigne
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We demonstrate a single-frequency and wavelength-switchable fiber ring laser obtained by a Lyot filter used in combination with a sampled fiber Bragg grating and a saturable absorber. The operating wavelength of the laser can be tuned, with a constant 0.8-nm step, in the range 1552.6-1555.8 nm. The tuning mechanism works on the rotation of the polarization of Lyot filter input signal. The structure of the laser is very simple regarding its characteristics: an output power of 6 dBm, with a signal-to-noise ratio higher than 60 dB and a spectral linewidth of 8 kHz.

Published in:

IEEE Photonics Technology Letters  (Volume:17 ,  Issue: 12 )