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Widely Vernier tunable external cavity laser including a sampled fiber Bragg grating with digital wavelength selection

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12 Author(s)
Bergonzo, A. ; Alcatel Res. & Innovation, Marcoussis, France ; Jacquet, J. ; De Gaudemaris, D. ; Landreau, J.
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We demonstrate an easy and efficient step tunable sampled fiber Bragg grating (SFBG) external cavity laser. A small current variation applied to a single electrode induces a step tuning of 15 nm based on the Vernier effect between an SFBG with a comb-like reflectivity and a two-section semiconductor laser diode. Thanks to the low current variation of less than 3 mA in the phase section, the output power remains constant within 0.6 dB at 6 dBm. The side-mode suppression ratio is greater than 40 dB over the whole tuning range.

Published in:

Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 8 )