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Comptes Rendus Physique
Volume 5, n° 6
pages 623-631 (juillet-août 2004)
Doi : 10.1016/j.crhy.2004.03.005
Fiberoptics setup for chaotic cryptographic communications

Valerio  Annovazzi-Lodi * ,  Mauro  Benedetti,  Sabina  Merlo,  Michele  Norgia
Dipartimento di Elettronica, Università di Pavia, Via Ferrata 1, 27100 Pavia, Italy 

*Corresponding author.

In this paper we present a fiberoptics setup which can be easily configured for different experiments on chaos generation, chaos synchronization and optical chaotic cryptography using semiconductor lasers. Long and short cavity, open and closed loop configurations are easily implemented with minor changes of the basic setup, allowing for a comparison of their performances using various encoding methods. Different transmission media, possibly including optical amplifiers, can be also tested. To cite this article: V. Annovazzi-Lodi et al., C. R. Physique 5 (2004).


Nous présentons un montage expérimental réalisant un système de transmission crypté par chaos, à base de fibre optique. Ce montage peut être pratiquement configuré de différentes manières, selon qu'il s'agit d'étudier la génération de chaos, la synchronisation des lasers chaotiques, et bien sûr aussi la cryptographie optique par chaos. Moyennant des modifications mineures de montage, il est possible d'explorer des configurations de cavité de différentes longueurs, des schémas de synchronisation avec ou sans contre-réaction optique, ainsi que des effets spécifiques dus au milieu de propagation entre émetteur et récepteur et à la présence d'amplificateurs optiques sur la ligne de transmission. Pour citer cet article : V. Annovazzi-Lodi et al., C. R. Physique 5 (2004).

Mots clés  : Chaos ; Cryptography ; Laser diode ; Synchronization.

Mots clés  : Chaos ; Cryptographie ; Laser à semi-conducteur ; Synchronisation.

© 2004  Académie des sciences@@#104156@@

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