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Proceedings Paper

The spectrum of chaos signal based on Wigner distribution
Author(s): Xiaodan Guo; Nian Fang; Zhaoming Huang
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Paper Abstract

An improved method of distinguishing chaotic signal based on Wigner distribution (WD) is presented. Except for the width of spectrum, the peak values speciality of time-frequency in 3-dimensional figure is employed to distinguish chaotic signal. The method is verified by Lorenz system. The Wigner distribution of the chaotic signal is compared with that of the gauss noise, and the result dedicated that the spectrums of them can be distinguished. The Wigner distribution is used to dispose the chaotic signal of the fiber ring laser base on Semiconductor Optical Amplifier (SOA) too, and the result is consistent with that of Lorenz system. In the conclusion, 3-dimensional WD distribution could more accurately show chaos spectrum characteristic and could be an effective method for distinguishing the chaos and other signals.

Paper Details

Date Published: 19 November 2007
PDF: 5 pages
Proc. SPIE 6782, Optoelectronic Materials and Devices II, 67822Q (19 November 2007); doi: 10.1117/12.745286
Show Author Affiliations
Xiaodan Guo, Shanghai Univ. (China)
Nian Fang, Shanghai Univ. (China)
Zhaoming Huang, Shanghai Univ. (China)

Published in SPIE Proceedings Vol. 6782:
Optoelectronic Materials and Devices II
Yoshiaki Nakano, Editor(s)

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