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Open Access item Entrainment of optical low-frequency fluctuations is enhanced by coupling
|Authors:||Buldú, Javier M.|
Torrent, M. C.
Mirasso, Claudio R.
|Keywords:||Low-frequency fluctuations, Periodic entrainment, Current modulation, Coupled semiconductor lasers, Synchronization, Bidirectional coupling|
|Publisher:||World Scientific Publishing|
|Citation:||Fluctuation and Noise Letters 3(2): 127-136 (2003)|
|Abstract:||The control of the low-frequency fluctuations exhibited by two mutually coupled semiconductor lasers is studied experimentally and numerically. We observe that coupling enhances the response of the system to a weak periodic modulation of the injection current of one of the lasers, leading to a highly efficient entrainment of the synchronized low-frequency power dropouts to the external periodic driving. We compare the quality of the entrainment with the one obtained in a single semiconductor laser with optical feedback, showing the beneficial role of coupling in this pursuit. The experimental observations are satisfactorily reproduced by numerical simulations of a set of coupled delay-differential rate equations.|
|Description:||10 pages, 7 figures.-- Full-text version available Open Access at: http://www-fen.upc.es/users/ojalvo/papers/elff.pdf|
|Publisher version (URL):||http://dx.doi.org/10.1142/S0219477503001191|
|Appears in Collections:||(IFISC) Artículos|
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