Observatorio de I+D+i UPM

Descripción
We present results on the electrical characterization of commercial fiber pigtailed 1. 55 ¿m 2.5 Gb/s VCSEL based on InAlGaAs active region, tunnel junction (TJ), air-gap aperture and InAlGaAs/InAlAs mirrors. The current-voltage (I-V) characteristics were measured and the results were fitted to the analytical expressions of an equivalent circuit considering the TJ in series with the active junction and a series resistance. Carrier capture/escape effects were considered in order to account for the reduced value of the drop in the measured differential resistance at threshold. The electrical parameters of both junctions were determined, showing that the TJ was responsible for most of the voltage drop at threshold. High frequency electrical impedance measurements were used to determine internal parameters as well as the role of external parasitics. The results were analyzed using a small signal equivalent circuit which includes the TJ, carrier capture/escape effects, the cavity parasitics, and the electrical access. A good agreement between the experimental and the equivalent circuit impedances at different bias was obtained by considering the differential resistances of the active and tunnel junctions extracted from the I-V characteristics, yielding reasonable values of the dynamic time constants and of the recombination coefficients.
Internacional	Si
Nombre congreso	SPIE Photonics West 2011
Tipo de participación	960
Lugar del congreso	San Francisco, California, EEUU
Revisores	Si
ISBN o ISSN	9780819484895
DOI	10.1117/12.873860
Fecha inicio congreso	22/01/2011
Fecha fin congreso	27/01/2011
Desde la página	0
Hasta la página	0
Título de las actas	Proceedings of SPIE vol. 7952. Vertical-Cavity Surface-Emitting Lasers XV

Esta actividad pertenece a memorias de investigación

• Autor: Antonio Consoli Barone (UPM)
• Autor: Julia Arias Rodriguez (Univ. Miguel Hernández (Spain))
• Autor: Jose Manuel Garcia Tijero (UPM)
• Autor: Francisco Jose Lopez Hernandez (UPM)
• Autor: Ignacio Esquivias Moscardo (UPM)

• Creador: Grupo de Investigación: Ingeniería Óptica
• Grupo de Investigación: Grupo de Fotónica Aplicada
• Centro o Instituto I+D+i: Centro de Domótica Integral, CEDINT
• Centro o Instituto I+D+i: Centro de Materiales y Dispositivos Avanzados para Tecnologías de Información y Comunicaciones
• Departamento: Tecnología Fotónica y Bioingeniería