Applications of an acousto-optical bispectrum processor

Stacy Kirk Kniffen; Michael F. Becker; Edward J. Powers

doi:10.1117/12.23402

27 December 1990 Applications of an acousto-optical bispectrum processor

Stacy Kirk Kniffen, Michael F. Becker, Edward J. Powers

Proceedings Volume 1347, Optical Information Processing Systems and Architectures II; (1990) https://doi.org/10.1117/12.23402
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

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.

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Stacy Kirk Kniffen, Michael F. Becker, and Edward J. Powers "Applications of an acousto-optical bispectrum processor", Proc. SPIE 1347, Optical Information Processing Systems and Architectures II, (27 December 1990); https://doi.org/10.1117/12.23402

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