Frequency-dependent linewidth enhancement factor of optical injection-locked quantum dot/dash lasers

Cheng Wang (1, 2, 3) , Mohamed E Chaibi (2) , Heming Huang (2) , Didier Erasme (2) , Philip Poole (4) , Jacky Even (1) , Frédéric Grillot (2)

1 FOTON - Fonctions Optiques pour les Technologies de l'informatiON
2 LTCI - Laboratoire Traitement et Communication de l'Information
3 G-SCOP_SIREP - Système d’Information, conception RobustE des Produits
4 NRC Institute for Information Technology

Combining theoretical and experimental studies show that optical injection strongly changes the behavior of the linewidth enhancement factor (αH-factor) and the FM-to-AM indices ratio (FAIR) in quantum dash/dot semiconductor lasers. In contrast to solitary lasers, both the αH-factor and the FAIR at low-frequency modulation are reduced by optical injection. At high modulation frequency, however, the phase-amplitude coupling characteristics are little influenced by optical injection.

Domaines: Physique [physics]; Sciences de l'ingénieur [physics]; Chimie

Cheng Wang, Mohamed E Chaibi, Heming Huang, Didier Erasme, Philip Poole, et al.. Frequency-dependent linewidth enhancement factor of optical injection-locked quantum dot/dash lasers. Optics Express, 2015, 23 (17), pp.21761. ⟨10.1364/OE.23.021761⟩. ⟨hal-01184512⟩