Abstract
This paper reports on the numerical analysis, control of coexisting attractors and microcontroller-based design of current modulated edge emitting semiconductor laser (CMEESL). The stability of equilibrium points of solitary edge emitting semiconductor laser found is investigated. By varying the amplitude of modulation current density, CMEESL displays periodic behaviors, period-doubling to chaotic behavior, bistability and coexistence between limit cycle and chaotic attractors. The coexistence between chaotic and limit cycle attractors is destroyed and controlled to a desired monostable trajectory by means of the linear augmentation method. In addition, a microcontroller-based circuit is also designed to indicate that CMEESL can be used in real applications. Microcontroller-based circuit outputs and numerical analysis results confirm each other.
Highlights
Bistability is the coexistence of twin identical dynamical behaviors for example twin periodic attractors or chaotic attractors for fixed set of system parameters and by varying only the initial conditions
For 0.003, coexistence between chaotic and limit cycle attractors for two different initial conditions is presented in Fig. 7 (a)
The research reported in this paper demonstrated the existence of bistable attractors, coexisting attractors and its control in current modulated edge emitting semiconductor laser
Summary
Bistability is the coexistence of twin identical dynamical behaviors for example twin periodic attractors or chaotic attractors for fixed set of system parameters and by varying only the initial conditions. Bistability, coexisting attractors and its control in CMEESL For im 0.8255 , system (1) exhibits bistable (asymmetric) period-2-oscillations for two different initial conditions as shown in left and right panels of Fig. 4(a).
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