Abstract— We report an experimental evidence of the generation of spiking in semiconductor laser (SL) with optoelectronic feedback (OEFD) using Mach-Zehnder modulator (MZM). The chaotic optical output of SL has been modulated by an external periodic perturbation with different frequencies (0 -110) MHz range. Two white noise-induced phenomena, the coherence resonance (CR) and the stochastic resonance (SR) have been studied at chaotic laser output. The noise intensity range -36 dBm to12 dBm has been utilized,. In SR, periodic signal with constant frequency 500 KHz and different noise level from (-36 dBm to12 dBm) have been applied as a control parameter in this condition.
Keywords— Chaos, feedback, Mach-Zehnder Modulator (MZM), coherence resonance, stochastic resonance.
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