Dark-bright solitons conversion system for secured and long distance optical communication

Abstract

We suggest a new purpose of a security scheme by employing the nonlinear behaviors of temporal dark and bright solitons amongst a micro-ring resonator system for signal security application. The chaotic signal is generated, where the required bright soliton pulse can be recovered and discovered by an add/drop filtering device. By using the reserve ring parameters, simulation results obtained have demonstrated that the soliton conversion can be performed. In application, the chaotic signal is generated and formed by the dark soliton inside a nonlinear micro-ring device. The different temporal soliton response time can be seen, the response times of 169 and 84ns are mentioned for temporal dark and bright solitons, respectively, which can also be used to figure the security key.The technique of optical conversion can be use to improve the optical communication network systems.