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Proceedings Paper

Asymmetric square-waves in mutually coupled semiconductor lasers
Author(s): David W. Sukow; Athanasios Gavrielides; Thomas Erneux; Josiah W. Davis; Makhosazana Z. Dube; Saneliso Mabuza; Russell Trimmer
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Paper Abstract

Two edge-emitting lasers coupled through polarization-rotated optical injection exhibit square-wave oscillations provided the roundtrip time from laser to laser and back is sufficiently large. If the mutual coupling between the lasers is relatively weak, the two plateaus of the square-waves exhibit different durations even though the total period remains close to the roundtrip time. This asymmetry progressively disappears as the feedback strength is increased. The experimental observations are confirmed by numerical simulations. The simulations also reveal that the square-wave regimes appear through a series of complex bifurcations and that a sufficiently large roundtrip time is needed.

Paper Details

Date Published: 8 May 2008
PDF: 10 pages
Proc. SPIE 6997, Semiconductor Lasers and Laser Dynamics III, 69970P (8 May 2008); doi: 10.1117/12.781473
Show Author Affiliations
David W. Sukow, Washington and Lee Univ. (United States)
Athanasios Gavrielides, Air Force Research Lab. (United States)
Thomas Erneux, Univ. Libre de Bruxelles (Belgium)
Josiah W. Davis, Washington and Lee Univ. (United States)
Makhosazana Z. Dube, Washington and Lee Univ. (United States)
Saneliso Mabuza, Washington and Lee Univ. (United States)
Russell Trimmer, Washington and Lee Univ. (United States)

Published in SPIE Proceedings Vol. 6997:
Semiconductor Lasers and Laser Dynamics III
Krassimir P. Panajotov; Marc Sciamanna; Angel A. Valle; Rainer Michalzik, Editor(s)

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