Résumé
Le but de cet article est d’étudier la génération d’impulsions brèves d’un laser 3Qws-dfb en utilisant la méthode de commutation de gain. Nous avons utilisé le modèle de domaine temporel (Tdm) qui considère simultanément tous les modes du champ global intra-cavité ainsi que les deux effets non linéaires de creusement de trous spectraux (Shb) et de saturation du gain. Nous avons montré que le laser 3Qws-dfb génère des impulsions brèves, puissantes, conformes au critère de Fourier. Ces résultats montrent que les lasers 3Qws-dfb sont des candidats potentiels pour une utilisation en tant que sources optiques monomodes pour les télécommunications à longue distance et à haut débit.
Abstract
The purpose of this paper is to study the generation of short pulses of the three quarter wave shift distributed feedback (3Qws-dfb) laser by using switching gain technique. We have used the temporal domain model (Tdm) which is a multimode spatio-temporal model that considers simultaneously all the modes of the overall intra-cavity field as well as the two following nonlinear effects, the spectral hole burning (Shb) and the gain saturation. Obtained results showed that a 3Qws-dfb laser can generate short pulses in accordance with Fourier criteria. These results show that 3Qws-dfb lasers are potential candidates as monomode optical sources for long distance high bit rate telecommunications.
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Zatni, A., Elhaziti, M., Rhattoy, A. et al. Étude de la génération d’impulsions brèves d’un laser DFB à trois contrôles de phases (3QWS-DFB). Ann. Télécommun. 60, 698–718 (2005). https://doi.org/10.1007/BF03219943
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DOI: https://doi.org/10.1007/BF03219943
Mots clés
- Laser rétroaction répartie
- Commande phase
- Impulsion ultracourte
- Méthode domaine temps
- Effet non linéaire
- Laser semiconducteur
- Régime signal fort
- Soliton
- Source optique