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Open Access item ON/OFF phase shift keying for chaos-encrypted communication using external-cavity semiconductor lasers

Authors:Heil, Tilmann
Mulet, Josep
Fischer, Ingo
Mirasso, Claudio R.
Peil, Michael
Colet, Pere
Elsässer, Wolfgang
Keywords:Chaos, Communications, Optical feedback, Semiconductor laser, Synchronization
Issue Date:Sep-2002
Publisher:Institute of Electrical and Electronics Engineers
Citation:IEEE Journal of Quantum Electronics 38(9): 1162-1170 (2002)
Abstract:Synchronization phenomena of two chaotically emitting semiconductor lasers subject to delayed optical feedback are investigated. The lasers are unidirectionally coupled via their optical fields. Our experimental and numerical studies demonstrate that the relative optical feedback phase is of decisive importance: a characteristic synchronization scenario evolves under variation of the relative optical-feedback phase mediating cyclically between chaos synchronization in conjunction with coherent fields, and uncorrelated states in conjunction with incoherent fields. As a key result, we propose, and numerically demonstrate, a novel ON/OFF phase shift keying method opening up new perspectives for applications in communication systems using chaotic carriers.
Description:9 pages, 8 figures, 1 table.
Publisher version (URL):http://dx.doi.org/10.1109/JQE.2002.801950
Appears in Collections:(IFISC) Artículos

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