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Optical Engineering

Optical real-time correlator for implementation of phase-only composite filters
Author(s): Danny Roberge; Yunlong Sheng
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Paper Abstract

We implement an optical continuous phase-only composite filter for security verification. An amplitude-mostly liquid crystal television (LCTV) is used for input and a phase-mostly LCTV is used for the phaseonly filter. We develop experimental techniques for optimizing the LCTV modulations and analyze the diffraction of both coupled-mode LCTVs. We use a new procedure for synthesizing the phase-only composite filters. The filter produces a narrow correlation peak without sidelobes. Experimentation results are shown.

Paper Details

Date Published: 1 September 1996
PDF: 7 pages
Opt. Eng. 35(9) doi: 10.1117/1.600858
Published in: Optical Engineering Volume 35, Issue 9
Show Author Affiliations
Danny Roberge, MYTEC (Canada)
Yunlong Sheng, Univ. Laval (Canada)

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