Optical rogue waves in semiconductor laser with time-delayed loss-controlling optoelectronic feedback

Abstract

The paper is devoted to analytical and numerical study of semiconductor laser dynamics. The standard balance laser model is supplemented with a summand modeling the optoelectronic device controlling the resonator losses. Most often, similar models are used to study the dynamics of a laser with harmonic modulation of the goodness of fit. In this case, a harmonic voltage is applied to the optoelectronic device controlling the resonator losses. In this paper we consider a more complicated case. Part of the radiation generated by the laser falls on the photodetector, the signal from which after amplification is fed to the optoelectronic device controlling the losses. Thus, the resonator losses depend on the laser-generated intensity.
In addition, we take into account that it takes a significant time for the signal to pass through the feedback loop. This results in a delayed summand in the equations. The magnitude of the delay can be controlled with an optical delay line.
We have shown that in this model there is a transition to the regime of dynamical chaos and chaotic attractor crisis. A bifurcation diagram has been constructed. As a result of the crisis, rare and unpredictable pulses of very high intensity, called rogue waves, appear in the laser model.

Speaker

Maxim S. Podgorny
Samara University
Russia

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