Influence of optical feedback strength and semiconductor laser coherence on chaos communications

Year: 2018

Authors: Al Bayati BM., Ahmad AK., Al-Naimee K.,

Autors Affiliation: Al Nahrain Univ, Dept Phys, Coll Sci, Baghdad, Iraq; Univ Baghdad, Dept Phys, Coll Sci, Baghdad, Iraq; CNR, Ist Nazl Ott, Largo E Fermi 6, I-50125 Florence, Italy.

Abstract: The existence of high chaotic spiking in the dynamics of semiconductor lasers with an AC-coupled optical feedback is investigated experimentally. After chaos signal generation, the effect of attenuation feedback strength as a control parameter is studied, and the time evolution of photon density is analyzed. The chaotic instability is tested; our results exhibit monostability in dynamics. By applying different frequencies to observe the hidden regions, the chaotic dynamic results are indicated as a good candidate to hide information for satisfying the resonance phenomenon, to evaluate secure optical communication. (c) 2018 Optical Society of America

Journal/Review: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS

Volume: 35 (4)      Pages from: 918  to: 925

KeyWords: Synchronization; Light; Suppression; Modulation; Spiking; Cavity
DOI: 10.1364/JOSAB.35.000918

Citations: 10
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