This paper proposed the design of the multiplexer node for the free-space transmission link. Various soliton modulated signal categories are numerically studied. The proposed system is a modified micro-optical add-drop multiplexer. The cross phase modulated signals induced into the main ring by the two side rings can give more signal complexity, which can lead to having the securely transmitted signal requirement. The high optical power obtained from the soliton aspect can give long-distance

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... munication, where the required frequency band can be improved and suitable for the required applications. For an instant, the use for the side road connection of the vehicle-to-everything (V2X) can be implemented in either cable or wireless(free-space) connection. The results obtained have shown promising applications such as free-space transmission link in both above and underground nodes, quantum cryptography, and communication security based on nonlinear aspects. Moreover, the electro-optic conversion can also be used by the stacked layers of silicon-graphene-gold, in which the signal conversion can be applied suitably.