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Proceedings Paper

Comparison of coherent and noncoherent optical correlators
Author(s): David P. Casasent; Gregory P. House
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Paper Abstract

This paper presents a simplified description of coherent and noncoherent optical correlators and derives the correlator models. The advantages of the tolerances in component positioning and quality for the noncoherent correlator are explained in detail. Performance measures for correlator comparison are outlined and quantitative comparison data are provided. An implementation approach for bipolar noncoherent filters is introduced and promising results simulating a limited number of amplitude and phase levels are given. We will show that the performance of noncoherent and coherent correlators are comparable and thus the noncoherent correlator should be more widely used because of its implementation advantages.

Paper Details

Date Published: 1 March 1994
PDF: 9 pages
Proc. SPIE 2237, Optical Pattern Recognition V, (1 March 1994); doi: 10.1117/12.169421
Show Author Affiliations
David P. Casasent, Carnegie Mellon Univ. (United States)
Gregory P. House, Carnegie Mellon Univ. (United States)

Published in SPIE Proceedings Vol. 2237:
Optical Pattern Recognition V
David P. Casasent; Tien-Hsin Chao, Editor(s)

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