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Bidirectional dual-channel chaos synchronization and communication based on mutually coupled VCSELs with optical feedback

LI-HUA DU1, ZHENG-MAO WU1,2, TAO DENG1, GUANG-QIONG XIA1,2,*

Affiliation

  1. School of Physics, Southwest University, Chongqing 400715, China
  2. State key Lab of Millimeter Waves, Southeast University, Nanjing 210096, China

Abstract

-Based on mutually coupled vertical-cavity surface-emitting lasers (VCSELs) with optical feedback, a bidirectional dualchannel chaos security communication system are proposed and theoretically investigated. The results show that, through selecting suitable system parameters, high-quality isochronal synchronization can be obtained for the x-, y-LP mode as well as the total intensities, respectively; the synchronization performances for each LP mode and the total intensities preserve a certain extent tolerance to intrinsic mismatched parameters except they are sensitive to frequency detuning between the two VCSELs. Based on the chaos synchronization of the x- and y-LP modes, bidirectional dual-channel communication performances have been preliminarily examined under two encryption methods, namely chaos masking (CMS) and additive chaos modulation (ACM)..

Keywords

- Vertical-cavity surface-emitting laser (VCSEL), Chaos synchronization, Dual-channel, Bidirectional communication.

Submitted at: Jan. 31, 2010
Accepted at: Feb. 18, 2010

Citation

LI-HUA DU, ZHENG-MAO WU, TAO DENG, GUANG-QIONG XIA, Bidirectional dual-channel chaos synchronization and communication based on mutually coupled VCSELs with optical feedback, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 2, pp. 171-176 (2010)