Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Emission regimes in a distributed feedback tapered master-oscillator power-amplifier at 1.5 um
Year:2014
Research Areas
  • Electronic technology and of the communications
Information
Abstract
Integrated master-oscillator power amplifiers driven under steady-state injection conditions are known to show a complex dynamics resulting in a variety of emission regimes. We present experimental results on the emission characteristics of a 1.5 ?m distributed feedback tapered master-oscillator power-amplifier in a wide range of steady-state injection conditions, showing different dynamic behaviors. The study combines the optical and radio-frequency spectra recorded under different levels of injected current into the master oscillator and the power amplifier sections. Under low injection current of the master oscillator the correlation between the optical and radio-frequency spectral maps allows to identify operation regimes in which the device emission arises from either the master oscillator mode or from the compound cavity modes allowed by the residual reflectance of the amplifier front facet. The quasi-periodic occurrence of these emission regimes as a function of the amplifier current is interpreted in terms of a thermally tuned competition between the modes of the master oscillator and the compound cavity modes. Under high injection current of the masteroscillator, two different regimes alternate quasi-periodically as a function of the injected current in the power amplifier: a stable regime with a single mode emission at the master oscillator frequency, and an unstable and complex self-pulsating regime showing strong peaks in the radio-frequency spectra as well as multiple frequencies in the optical spectra.
International
Si
Congress
SPIE Photonics Europe: Conference 9134, Semiconductor Lasers and Laser Dynamics VI
960
Place
Brussels, Belgium
Reviewers
Si
ISBN/ISSN
0277-786X
10.1117/12.2052350
Start Date
14/04/2014
End Date
17/04/2014
From page
1
To page
7
Proc. of SPIE Vol. 9134, Semiconductor Lasers and Laser Dynamics VI
Participants
  • Autor: Mariafernanda Vilera Suárez (UPM)
  • Autor: Jose Manuel Garcia Tijero (UPM)
  • Autor: Antonio Consoli Barone (UPM)
  • Autor: Santiago Aguilera Navarro (UPM)
  • Autor: Pawel Adamiec . (UPM)
  • Autor: Ignacio Esquivias Moscardo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Fotónica Aplicada
  • Departamento: Tecnología Fotónica y Bioingeniería
  • Centro o Instituto I+D+i: Centro de Materiales y Dispositivos Avanzados para Tecnologías de Información y Comunicaciones
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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