10-GHz 1.59 µm quantum dash passively mode-locked two-section lasers

Madhoussoudhana Dontabactouny (1) , C. Rosenberg (2) , E. Semenova (2) , D. Larsson (2) , K. Yvind (2) , Rozenn Piron (1) , Frederic Grillot (1) , Olivier Dehaese (1) , Nicolas Chevalier (1) , Slimane Loualiche (1)

1 FOTON - Fonctions Optiques pour les Technologies de l'informatiON
2 Department of photonics engineering

This paper reports the fabrication and the characterisation of a 10 GHz two-section passively mode-locked quantum dash laser emitting at 1.59 μm. The potential of the device's mode-locking is investigated through an analytical model taking into account both the material parameters and the laser geometry. Results show that the combination of a small absorbing section coupled to a high absorption coefficient can lead to an efficient mode-locking. Characterisation shows mode-locking operation though output pulses are found to be strongly chirped. Noise measurements demonstrate that the single side band phase noise does not exceed -80 dBc/Hz at 100 kHz offset leading to an average timing jitter as low as 800 fs. As compared to single QW lasers these results constitute a significant improvement and are of first importance for applications in optical telecommunications.

Domaines: Optique / photonique

Madhoussoudhana Dontabactouny, C. Rosenberg, E. Semenova, D. Larsson, K. Yvind, et al.. 10-GHz 1.59 µm quantum dash passively mode-locked two-section lasers. SPIE Photonics Europe 2010, Apr 2010, Bruxelles, Belgium. pp.77201A, ⟨10.1117/12.854705⟩. ⟨hal-00662927⟩