Pulse-train solutions and excitability in an optoelectronic oscillator

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2011-11-01

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Abstract

We study an optoelectronic time-delay oscillator with bandpass filtering for different values of the filter bandwidth. Our experiments show novel pulse-train solutions with pulse widths that can be controlled over a three-order-of-magnitude range, with a minimum pulse width of ∼150 ps. The equations governing the dynamics of our optoelectronic oscillator are similar to the FitzHugh-Nagumo model from neurodynamics with delayed feedback in the excitable and oscillatory regimes. Using a nullclines analysis, we derive an analytical proportionality between pulse width and the low-frequency cutoff of the bandpass filter, which is in agreement with experiments and numerical simulations. Furthermore, the nullclines help to describe the shape of the waveforms. © Europhysics Letters Association.

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10.1209/0295-5075/96/34001

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Rosin, DP, KE Callan, DJ Gauthier and E Schöll (2011). Pulse-train solutions and excitability in an optoelectronic oscillator. EPL, 96(3). pp. 1–6. 10.1209/0295-5075/96/34001 Retrieved from https://hdl.handle.net/10161/5102.

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