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Chaos and chaos synchronization of semiconductor lasers with optoelectronic feedback and bidirectional couplings

YAN-JUN FU1,* , GUANG-YU JIANG1

Affiliation

  1. Key Laboratory of Nondestructive Testing (Ministry of Education), Nanchang Hangkong University, Nanchang 330063, China

Abstract

Chaos and chaotic synchronization of semiconductor lasers with optoelectronic feedback and bidirectional couplings have been investigated theoretically. The results show that chaos and chaotic synchronization of two lasers are realized by two schemes which are difference coupled and sum-coupled, and the effects of synchronization are both very good, but sum-coupled is easier. Taking coupling constant k and nonlinear gain ε into account, the influence of their variation on chaos and chaotic synchronization are analyzed, two lasers can achieve good synchronization with small tolerance of parameter mismatch, but the robustness and stability of difference coupled is better than sum coupled..

Keywords

chaotic synchronization;optoelectronic feedback;semiconductor lasers;chaos.

Submitted at: May 31, 2010
Accepted at: June 16, 2010

Citation

YAN-JUN FU, GUANG-YU JIANG, Chaos and chaos synchronization of semiconductor lasers with optoelectronic feedback and bidirectional couplings, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 6, pp. 1350-1355 (2010)