Mutual entrainment in delay-coupled non-identical semiconductor lasers
Date
1997-06Author
Hohl-AbiChedid, Angela
Gavrielides, Athanasios
Erneux, Thomas
Kovanis, Vassilios
Metadata
Show full item recordAbstract
The dynamics of two mutually coupled but non-identical semiconductor lasers are studied experimentally,
numerically and analytically for weak coupling. The lasers have dissimilar relaxation oscillation frequencies and
intensities, and their mutual coupling strength is asymmetric. We find that the lasers may entrain to the relaxation
oscillation frequency of either one of the lasers. The form of entrainment is a special form of synchronization,
called localized synchronization, where one laser exhibits strong oscillations and the other one weak oscillations.
We perform a bifurcation analysis to explain the mechanism of entrainment by taking advantage of the inherently
large parameters in a semiconductor laser, the linewidth enhancement factor c and the ratio of the carrier and
photon lifetime T.