Control of Nonlinear Dynamics of Quantum Dot Laser with External Optical Feedback
DOI:
https://doi.org/10.12974/2311-8792.2016.04.2Keywords:
Quantum-dot (QD) laser, dynamics, optical feedback.Abstract
We examine the nonlinear dynamics of a semiconductor quantum-dot (QD) laser subject to external optical feedback by using dimensionless equations numerical model. In our QD laser model we employ dynamic for ground and excited state processes, additionally between the QDs and the wetting layer (WL). This enables us to tune the output of external cavity modes QDs by changing the bias current, delayed time and feedback strength to investigate how they affect the stability properties of the QD laser. Our results show that high bias current and small ?-factor value lead to lower sensitivity of the laser towards optical feedback.
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