We introduce a chaos-based communication scheme allowing for bidirectional exchange of information. By coupling two semiconductor lasers through a partially transparent optical mirror, delay dynamics is induced in both lasers. We numerically demonstrate that this dynamics can be identically synchronized, and moreover, information introduced on both ends of the link can be simultaneously transmitted. This scheme allows one to negotiate a key through a public channel.
© 2007 Optical Society of America
Original Manuscript: July 28, 2006
Revised Manuscript: October 11, 2006
Manuscript Accepted: October 25, 2006
Published: January 26, 2007
Raúl Vicente, Claudio R. Mirasso, and Ingo Fischer, "Simultaneous bidirectional message transmission in a chaos-based communication scheme," Opt. Lett. 32, 403-405 (2007)