The optical identification technique can be combined with other physical layer security approaches, such as quantum key distribution (QKD) or steganography, to enhance the overall security of optical networks. By integrating optical identification with QKD, a dual-layer security mechanism can be established, where the identification process verifies the authenticity of network components, while QKD ensures secure key exchange between trusted entities. This combination strengthens the network's resilience against eavesdropping and unauthorized access.
Similarly, integrating optical identification with steganography allows for hidden communication channels within the network, further concealing sensitive information and enhancing data security. By embedding identification signatures within steganographic cover objects, the network can achieve both authentication and covert communication capabilities. This comprehensive security solution leverages the strengths of each approach to create a robust defense mechanism against various cyber threats in optical networks.