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Proceedings Paper

Small-signal response of a lamba/4-shifted MQW DFB laser as a three-level system
Author(s): Alberto de Deus Sarmento; Mario F. S. Ferreira
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Paper Abstract

The small-signal response of a (lambda) /4-shifted multiple-quantum well (MQW) distributed feedback (DFB) laser is investigated. The gain spectrum shows two major peaks located at the lowest heavy-hole and light-hole transitions. Therefore, the MQW DFB laser is treated as a three-level system. In the low-power range the heavy-hole transition dominates, while in the high-power range there is a mixing of the heavy-hole and the light-hole transitions. It is shown that the dynamic response of the MQW DFB laser is significantly affected by the contribution due to the light-hole transition. Its dependence on the number of quantum wells and on the coupling coefficient of the grating ((kappa) ) is also discussed.

Paper Details

Date Published: 1 April 1996
PDF: 10 pages
Proc. SPIE 2684, High-Speed Semiconductor Laser Sources, (1 April 1996); doi: 10.1117/12.236943
Show Author Affiliations
Alberto de Deus Sarmento, Instituto Superior Tecnico (Portugal)
Mario F. S. Ferreira, Univ. de Aveiro (Portugal)


Published in SPIE Proceedings Vol. 2684:
High-Speed Semiconductor Laser Sources
Paul A. Morton; Deborah L. Crawford, Editor(s)

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