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

Madhoussoudhana Dontabactouny, C. Rosenberg, Elizaveta Semenova, David Larsson, Kresten Yvind, R. Piron, F. Grillot, O. Dehaese, N. Chevalier, S. Loualiche

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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.
Original languageEnglish
JournalProceedings of SPIE--the international society for optical engineering
Pages (from-to)77201A
Publication statusPublished - 2010
EventSemiconductor Lasers and Laser Dynamics - Brussels, Belgium
Duration: 1 Jan 2010 → …
Conference number: 4


ConferenceSemiconductor Lasers and Laser Dynamics
CityBrussels, Belgium
Period01/01/2010 → …


  • Mode-locking
  • Ultra-fast lasers
  • Quantum dots/dashes


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