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Tuning the period of square-wave oscillations for delay-coupled optoelectronic systems

Martínez-Llinàs, Jade; Colet, Pere; Erneux, Thomas
Physical Review E 89, 042908 (1-11) (2014)

We analyze the response of two delay-coupled optoelectronic oscillators. Each oscillator operates under its own delayed feedback. We show that the system can display square-wave periodic solutions which can be synchronized in-phase or out-of-phase depending on the ratio between self- and cross- delay times. Furthermore, we show that multiple periodic synchronized solutions can coexist for the same values of the fixed parameters. As a consequence, it is possible to generate square-wave oscillations with different periods by just changing the initial conditions.