Chaos synchronization between arbitrary two response VCSELs in a broadband chaos network driven by a bandwidth-enhanced chaotic signal

Abstract A broadband chaos network is proposed and its chaos synchronization performance is investigated. The results show that, using a bandwidth-enhanced chaotic signal (about 42 GHz bandwidth) from a drive vertical-cavity surface-emitting laser (D-VCSEL) to drive all response VCESLs (R-VCSELs) in the broadband chaos network, high-quality chaos synchronization with over 30 GHz bandwidth between two corresponding linear polarization (LP) modes in arbitrary two R-VCSELs can be obtained under optimum injection parameters, while the correlated coefficients between the D-VCSEL and R-VCSELs are low. Taking two LP modes as two different communication channels, this chaos network may possess the potentiality to realize more than 60 GHz high-capacity secret communication based on VCSELs with several GHz of relaxation oscillation frequency.

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