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Proceedings Paper

Secure optical telecommunications using chaos in wavelength for signal transmissions
Author(s): Jean-Pierre Goedgebuer; Laurent Larger; William T. Rhodes
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Paper Abstract

Severe communications based on chaos have been investigated for some years, especially in the area of radiofrequency transmissions. Signal decoding and decoding is then generally achieved using a RF carrier whose amplitude fluctuates chaotically. Recent advances have also been reported in the field of optical telecommunications. Optical chaos produced by random fluctuations of laser power is then used to encrypt signals. However most of the systems reported so far are plagued by their low flexibility which makes difficult the key to be changed easily. We report experiments in which chaos in wavelength, rather than in power, is advantageously used to encrypt signals. The latter are encrypted as chaotic fluctuations of the wavelength of a tunable semiconductor laser driven by a generator of chaos. Decoding makes use of another generator of chaos operating as a local oscillator synchronized on the first one. The first results are reported in the wavelength range of 1550 nm.

Paper Details

Date Published: 6 July 1999
PDF: 5 pages
Proc. SPIE 3572, 3rd Iberoamerican Optics Meeting and 6th Latin American Meeting on Optics, Lasers, and Their Applications, (6 July 1999); doi: 10.1117/12.358374
Show Author Affiliations
Jean-Pierre Goedgebuer, Univ. de Franche-Comte and Georgia Tech Lorraine (France)
Laurent Larger, Univ. de Franche-Comte and Georgia Tech Lorraine (France)
William T. Rhodes, Univ. de Franche-Comte and Georgia Tech Lorraine (France)


Published in SPIE Proceedings Vol. 3572:
3rd Iberoamerican Optics Meeting and 6th Latin American Meeting on Optics, Lasers, and Their Applications
Angela Maria Guzman, Editor(s)

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