Abstract

Optical chaos encryption is a promising technique to complement software and quantum cryptography. In this context, a message is encoded at the physical layer by adding the signal to a chaotic carrier generated by a nonlinear optical element. The message can be recovered using the synchronization phenomenon, by which a receiver can reproduce and subtract the chaotic part of the transmitted signal. The principle of synchronization only works when the transmitter and the receiver are quite similar systems.

© 2007 IEEE