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Proceedings Paper

Applications of an acousto-optical bispectrum processor
Author(s): Stacy Kirk Kniffen; Michael F. Becker; Edward J. Powers
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Paper Abstract

The ''bispectrum'' of a signal measures the degree of correlation between three interacting frequency components due to a quadratic nonlinearity. Attention is here given to an acoustooptic implementation of the bispectrum which can operate on relatively wide-bandwidth signals. The overall architecture employed is that of a modified Mach-Zehnder interferometer which contains three acoustooptic modulators in conjunction with appropriate transforming lenses. The cross-bispectrum of the input and output signals are computed for a quadratically nonlinear system; an accurate estimate of the time delay between the signals is derived from the cross-bispectrum information.

Paper Details

Date Published: 27 December 1990
PDF: 13 pages
Proc. SPIE 1347, Optical Information Processing Systems and Architectures II, (27 December 1990); doi: 10.1117/12.23402
Show Author Affiliations
Stacy Kirk Kniffen, Univ. of Texas/Austin (United States)
Michael F. Becker, Univ. of Texas/Austin (United States)
Edward J. Powers, Univ. of Texas/Austin (United States)

Published in SPIE Proceedings Vol. 1347:
Optical Information Processing Systems and Architectures II
Bahram Javidi, Editor(s)

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