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31 October 1994 Correlator based on joint Fourier transform of mutually incoherent fields using a second-order hologram
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Proceedings Volume 1991, Diffractometry and Scatterometry; (1994) https://doi.org/10.1117/12.192006
Event: International Conference on Diffractometry and Scatterometry, 1994, Warszawa, Poland
Abstract
Generalization of the linear matched filter concept to nonlinear matched filter is presented. It is shown that the nonlinearity introduced in the filter domain results in the component of the diffraction hologram structure which is associated with a whole set of a joint power spectrum for mutually incoherent (noninterfering) input signals. It is shown that a correlator with a holographic match filter whose amplitude transmittance expanded in powers of exposure contains up to and including second order terms (the so-called 'second order hologram') is a new class of 2D or 3D optical associative memories.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Peter V. Polyanskii "Correlator based on joint Fourier transform of mutually incoherent fields using a second-order hologram", Proc. SPIE 1991, Diffractometry and Scatterometry, (31 October 1994); https://doi.org/10.1117/12.192006
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