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Proceedings Paper

Shift-invariant limited photorefractive-based correlators
Author(s): Francis T. S. Yu; Shizhuo Yin; Chun-Te Li
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Paper Abstract

Although photorefractive (PR) filter has the advantage of large storage capacity, the thickness of the filter also impairs the target shift limitation. In this paper, we have investigated the thickness requirement, as imposed by the focal depth of the transform lens, and the shift-invariant, as imposed by the Bragg diffraction. The commonly used photorefractive-based correlators are studied, which are VanderLugt, joint transform, and reflective types (RC) correlators. We have shown that PR-RC performance better, in terms of shift-invariant tolerance.

Paper Details

Date Published: 9 October 1998
PDF: 10 pages
Proc. SPIE 3470, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IV, (9 October 1998); doi: 10.1117/12.326866
Show Author Affiliations
Francis T. S. Yu, The Pennsylvania State Univ. (United States)
Shizhuo Yin, The Pennsylvania State Univ. (United States)
Chun-Te Li, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 3470:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IV
Francis T. S. Yu; Shizhuo Yin, Editor(s)

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