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- Apostolos Argyris, Dimitris Syvridis, +7 authors K Alan Shore
- Nature
- 2005

Chaotic signals have been proposed as broadband information carriers with the potential of providing a high level of robustness and privacy in data transmission. Laboratory demonstrations of chaos-based optical communications have already shown the potential of this technology, but a field experiment using commercial optical networks has not been undertaken… (More)

- Raúl Vicente, José Daudén, Pere Colet, Raúl Toral
- 2005

We characterize the chaotic dynamics of semiconductor lasers subject to either optical or electrooptical feedback modeled by Lang–Kobayashi and Ikeda equations, respectively. This characterization is relevant for secure optical communications based on chaos encryption. In particular, for each system we compute as a function of tunable parameters the… (More)

- Y Chembo Kouomou, Pere Colet, Laurent Larger, Nicolas Gastaud
- Physical review letters
- 2005

We show that in integro-differential delayed dynamical systems, a hybrid state of simultaneous fast-scale chaos and slow-scale periodicity can emerge subsequently to a sequence of Hopf bifurcations. The resulting time trace thereby consists in chaotic oscillations "breathing" periodically at a significantly lower frequency. Experimental evidence of this… (More)

- Raul Montagne, Pere Colet
- 1997

The role of nonlinear diiusion terms in the stability of periodic solutions in the regime of spatio temporal chaos is studied. The stabilization of unstable plane waves in the Complex Ginzburg Landau equation in weakly chaotic regimes such as phase turbulence and spatiotemporal intermittency or in strong chaotic ones like defect turbulence is demonstrated.

- Christian Otto, Egle Tylaite, +11 authors E Schöll
- 2012

We study a passively mode-locked semiconductor ring laser subject to optical feedback from an external mirror. Using a delay differential equation model for the mode-locked laser, we are able to systematically investigate the resonance effects of the inter-spike interval time of the laser and the roundtrip time of the light in the external cavity (delay… (More)

We introduce a stochastic model for the determination of phase noise in optoelectronic oscillators. After a short overview of the main results for the phase diffusion approach in autonomous oscillators, an extension is proposed for the case of optoelectronic oscillators where the microwave is a limit-cycle originated from a bifurcation induced by… (More)

- Romain Modeste Nguimdo, Pere Colet
- Optics express
- 2012

We consider an electro-optic phase chaos system with two feedback loops organized in a parallel configuration such that the dynamics of one of the loops remains internal. We show that this configuration intrinsically conceals in the transmitted variable the internal delay times, which are critical for decoding. The scheme also allows for the inclusion, in a… (More)

- Maxime Lenormand, Antònia Tugores, Pere Colet, José J. Ramasco
- PloS one
- 2014

The pervasiveness of mobile devices, which is increasing daily, is generating a vast amount of geo-located data allowing us to gain further insights into human behaviors. In particular, this new technology enables users to communicate through mobile social media applications, such as Twitter, anytime and anywhere. Thus, geo-located tweets offer the… (More)

- Alessandro Scirè, Pere Colet, Maxi San Miguel
- Physical review. E, Statistical, nonlinear, and…
- 2004

We introduce a prototype model for globally coupled oscillators in which each element is given an oscillation frequency and a preferential oscillation direction (polarization), both randomly distributed. We found two collective transitions: to phase synchronization and to polarization ordering. Introducing a global-phase and polarization order parameters,… (More)

- C R Mirasso, P Colet, M S Miguel
- Optics letters
- 1991

The statistics of switch-on time, maximum light intensity, and pulse width of single-mode lasers modulated at gigahertz rates are analyzed. Numerical results obtained from noise-driven rate equations are reported. Pulse statistics, and in particular timing jitter, are shown to be rather insensitive to the bias current at this high-speed modulation. In… (More)