Abstract

The space–bandwidth requirements of thick gratings in the Fourier plane of a coherent optical image processor are analyzed. Based on Kogelnik’s relationship for the diffraction efficiency, relations for the space–bandwidth products of the input image and the point-spread function are obtained in terms of grating parameters. It is concluded that thick gratings, such as photorefractive crystals, are not well suited for implementing shift-invariant operations through Fourier-plane filtering.

© 1992 Optical Society of America

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Corrections

Ravindra A. Athale and Kannan Raj, "Fourier-plane filtering by a thick grating: a space–bandwidth analysis: erratum," Opt. Lett. 17, 1170-1170 (1992)
https://www.osapublishing.org/ol/abstract.cfm?uri=ol-17-16-1170

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