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Proceedings Paper

Secure optical telecommunications using chaos in wavelength for signal transmission
Author(s): Jean-Pierre Goedgebuer; Laurent Larger
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Paper Abstract

Secure communications based on chaos have been investigated for some years, especially in the area of radio frequency 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 the sued to encrypt signals. However most of the system 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: 1 December 1997
PDF: 6 pages
Proc. SPIE 3317, International Conference on Correlation Optics, (1 December 1997); doi: 10.1117/12.295664
Show Author Affiliations
Jean-Pierre Goedgebuer, Lab. d'Optique/CNRS (France)
Laurent Larger, Lab. d'Optique/CNRS (France)


Published in SPIE Proceedings Vol. 3317:
International Conference on Correlation Optics

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