Delay-induced deterministic resonance of chaotic dynamics
Supélec, OPTEL Research Group and Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS) 2 rue Edouard Belin, 57070 Metz, France, EU
Received: 22 November 2012
Accepted: 8 January 2013
We show that time-delayed feedback can induce an optimal regularity in the pulsating dynamics of a nonlinear system without the need for an additional noise source. This deterministic delay-induced coherence resonance is reported experimentally in the chaotic dynamics of a laser diode subject to a phase-conjugate optical feedback, when varying the amount of feedback light. Qualitatively similar resonance is found theoretically in the model of a time-delayed class-A laser. The resonance is therefore not related to an interplay between time-delayed dynamics and faster undamped relaxation oscillations and is thought to be generic for a large class of delayed nonlinear systems.
PACS: 42.65.Sf – Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics / 42.55.Px – Semiconductor lasers; laser diodes / 42.60.Mi – Dynamical laser instabilities; noisy laser behavior
© EPLA, 2013