Optical steganography oriented routing and resource allocation approach for stealth services in optical transport networks

Optical steganography can realize the broadening of signal in the time domain through the group velocity dispersive, and transform the signal which needs to be protected into system-like noise hidden in the public service for transmission. Because of the random distribution of public and stealth services in the optical network, the establishment of end-to-end stealth channels often needs to connect multiple traffic channels. Therefore, for the routing and resource allocation of public services, the transmission of stealth services should be considered. In this paper, we study optical steganography oriented routing and resource allocation (OS-RRA) approach for public and stealth services in optical transport networks. An Integer Linear Programming (ILP) model is developed while meeting the constraint that a stealth service can only be hidden in public services. Simulation results show that the OS-RRA approach has low resource consumption while achieving the required security level.