A novel all-optical system of the chaotic encryption for optical networks

We propose a novel all-optical system for a chaotic encryption based on two coupled subsystems of two master single-mode vertical cavity surface emitting lasers (VCSELs) and two slaved VCSELs synchronized by the master laser unidirectional radiation unlike previous techniques based on the external cavity with reflecting mirrors. The essential advantage of the proposed technique is a higher level of security in an optical channel due to a significantly more complicated chaotic behavior caused by the use of active components such as VCSELs. We carried out numerical simulations of the proposed system based on the coupled rate equations for four VCSELs and evaluated the system performance parameters.