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Open Access item Stochastic entrainment of optical power dropouts

Authors:Buldú, Javier M.
García-Ojalvo, Jordi
Mirasso, Claudio R.
Torrent, M. C.
Keywords:[PACS] Fluctuation phenomena, random processes, noise, and Brownian motion, [PACS] Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics, [PACS] Semiconductor lasers; laser diodes
Issue Date:16-Aug-2002
Publisher:American Physical Society
Citation:Physical Review E 66(2): 021106 (2002)
Abstract:We show that the natural pulsed behavior, in the form of sudden power dropouts, exhibited by semiconductor lasers subject to optical feedback can be entrained by the joint action of external noise and weak periodic driving. These power dropouts, which in the absence of forcing do not occur periodically, acquire the periodicity of the harmonic driving for an optimal amount of external noise,in what constitutes a form of stochastic resonance. This phenomenon is analyzed by means of a generalized Lang-Kobayashi model with external non-white noise in the modulated pump current, in terms of both the temporal correlation and the amplitude of the noise.
Description:5 pages, 6 figures.-- PACS nrs.: 05.40.-a, 42.65.Sf, 42.55.Px.
Publisher version (URL):http://dx.doi.org/10.1103/PhysRevE.66.021106
Appears in Collections:(IFISC) Artículos

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