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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 that 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. © 2014 American Physical Society.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

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