A hybrid optical frequency-hopping scheme based on OAM multiplexing for secure optical communications

In this paper, a hybrid optical frequency hopping system based on OAM multiplexing is proposed, which is mainly applied to the security of free space optical communication. In the proposed scheme, the segmented users' data goes through two stages of hopping successively to realize data hiding. And the security performance is also analyzed in this paper. © 2020 The Author(s).