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dc.contributor.authorNguimdo, Romain Modeste-
dc.contributor.authorColet, Pere-
dc.identifier.citationOptics Express 20(23): 25333-25344 (2012)-
dc.descriptionOCIS codes:250.0250,060.0060,140.0140,190.0190)es_ES
dc.description.abstractWe consider an electro-optic phase chaos system with two feedback loops organized in a parallel configuration such that the dynamics of one of the loops remains internal. We show that this configuration intrinsically conceals in the transmitted variable the internal delay times, which are critical for decoding. The scheme also allows for the inclusion, in a very efficient way, of a digital key generated as a long pseudorandom binary sequence. A single digital key can operate both in the internal and transmitted variables leading to a large sensitivity of the synchronization to a key-mismatch. The combination of intrinsic delay time concealment and digital key selectivity provides the basis for a large enhancement of the confidentiality in chaos-based communications. © 2012 OSAes_ES
dc.description.sponsorshipThe authors thank L. Larger for valuable discussions. Financial support from MINECO, Spain, and Feder under Projects FIS2007-60327 (FISICOS) and TEC2009-14101 (DeCoDicA) and by the EC Project PHOCUS (FP7-ICT-2009-C-240763) is acknowledged. R.M.N. acknowledges fellowship BES-2007-14627 under the FPI program of MINECO. Also, he acknowledges the Research Foundation Flanders (FWO) for project support and fellowships, and the Belgian Interuniversity Attraction Pole Network photonics@be.es_ES
dc.publisherOptical Society of Americaes_ES
dc.titleElectro-optic phase chaos systems with an internal variable and a digital keyes_ES
dc.description.peerreviewedPeer reviewedes_ES
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