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Optical Engineering

Computer-generated complex filter for an all-optical and a digital optical hybrid correlator
Author(s): Philip M. Birch; Rupert C. D. Young; Frederic Claret-Tournier; David M. Budgett; Christopher R. Chatwin
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Paper Abstract

We present results of a correlation filter utilizing a computergenerated hologram using an analog ferroelectric liquid-crystal spatial light modulator (SLM). The SLM amplitude-modulates light and can induce a 0-? phase shift, which is equivalent to modulating along the real axis. Two pixels are combined into a macropixel using a phase-detour technique enabling full complex modulation. The method is used as the filter for a conventional optical correlator and in a digital-optical hybrid correlator.

Paper Details

Date Published: 1 January 2002
PDF: 7 pages
Opt. Eng. 41(1) doi: 10.1117/1.1425785
Published in: Optical Engineering Volume 41, Issue 1
Show Author Affiliations
Philip M. Birch, Univ. of Sussex (United Kingdom)
Rupert C. D. Young, Univ. of Sussex (United Kingdom)
Frederic Claret-Tournier, Univ. of Sussex (United Kingdom)
David M. Budgett, Univ. of Sussex (United Kingdom)
Christopher R. Chatwin, Univ. of Sussex (United Kingdom)

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