Chaos modulation in semiconductor laser with optoelectronic feedback

Document Type : Original Article

Authors

1 Department of Physics, College of Science for women, University of Baghdad, Baghdad, Iraq.

2 Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq.+

3 CNR-Istituto Nazionali di Ottica, Largo E. Fermi 6, 50125, Firenze, Italy.

10.1088/1757-899X/610/1/012084

Abstract

The experimental and numerical study of chaos modulation will be presented in two stats, first, when the frequency of the external perturbation is varied, secondly, when the amplitude of this perturbation is changed. The dynamics of the laser output are analyzed by Fast Fourier Transformation, attractors and bifurcation Diagram. Some frequencies could be hidden other appeared, when the frequencies are hidden, the communication link considered as secure.