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Open Access item Chaos shift-keying encryption in chaotic external-cavity semiconductor lasers using a single-receiver scheme

Authors:Mirasso, Claudio R.
Mulet, Josep
Masoller, Cristina
Keywords:Injection-locked oscillator, Nonlinear optics, Semiconductor lasers (dynamics)
Issue Date:Apr-2002
Publisher:Institute of Electrical and Electronics Engineers
Citation:IEEE Photonics Technology Letters 14(4): 456-458 (2002)
Abstract:In this letter, we numerically show that chaos shift-keying (CSK) encryption can be achieved by using a single receiver, thus providing a better performance when comparing with the traditional CSK scheme based on two receivers. We analyze the rate equation model for two unidirectionally coupled single-mode external-cavity semiconductor lasers operating in a chaotic regime. The message is encoded in the emitter by slightly varying its injection current. We find that under appropriate conditions, the receiver laser synchronizes to the chaotic emitter, filtering the encoded message and allowing message extraction.
Description:3 pages, 4 figures.
Publisher version (URL):http://dx.doi.org/10.1109/68.992576
URI:http://hdl.handle.net/10261/14837
ISSN:1041-1135
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