Abstract

VCSELs are attractive light sources for data communication as they emit in a single longitudinal mode with circular beam shape. For secure communication using data encryption in chaotic state it is important to achieve high level of synchronization of chaotic light sources. Recently chaos synchronization has been demonstrated experimentally in mutually coupled VCSELs [1] and high degree of correlation (anticorrelation) has been achieved between modes with parallel (orthogonal) polarization [2]. Here we investigate numerically the impact of the polarization mode competition and the frequency detuning between the two lasers on the chaos synchronization of mutually coupled VCSELs. To this aim we implement a simple rate-equation model of single transverse-mode VCSEL.

© 2007 IEEE