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Comparison of closed-loop and open-loop in incoherent optical feedback chaos synchronization system

Z.-L. ZHANG1, G.-Q. XIA2, X.-D. LIN1, Z.-M. WU1,*

Affiliation

  1. School of Physics, Southwest University, Chongqing 400715, China
  2. Key Lab of Weak Light Nonlinear Photonics of Ministry of Education, Nankai University, Tianjin 300457, China

Abstract

Based on the theoretical model of semiconductor lasers subject to incoherent optical feedback, the chaos synchronization characteristics and communication performances under closed-loop and open-loop schemes are numerically investigated. The results show that, compared with those that happen for closed-loop scheme, better performance of message decoding and less sensitivity to parameters mismatch can be obtained for open-loop scheme. These results are opposite to the case in coherent optical feedback chaos synchronization system.

Keywords

Semiconductor laser, Incoherent optical feedback, Chaos synchronization, Closed-loop, Open-loop, Parameters mismatch.

Citation

Z.-L. ZHANG, G.-Q. XIA, X.-D. LIN, Z.-M. WU, Comparison of closed-loop and open-loop in incoherent optical feedback chaos synchronization system, Optoelectronics and Advanced Materials - Rapid Communications, 3, 5, May 2009, pp.399-404 (2009).

Submitted at: May 5, 2009

Accepted at: May 25, 2009