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Title of Journal: OPT REV

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Abbravation: Optical Review

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Optical Society of Japan

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DOI

10.1007/s00186-012-0390-9

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1349-9432

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All optical phaseonly filtering correlation with

Authors: Takeshi Takahashi Yukihiro Ishii
Publish Date: 2010/06/05
Volume: 17, Issue: 3, Pages: 195-203
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Abstract

All optical phaseonly filtering correlator is constructed with an optically addressed ferroelectric liquidcrystal spatial light modulator FSLM for a binarized input object and a twistednematic liquidcrystal spatiallight modulator for a computergenerated phaseonly filter In order to improve the discrimination capability of a phaseonly filtering correlator a binarized amplitude with maximum contrast in a FSLM is used for an object input The contrast of binarized intensities can be maximized by adjusting the rotation angles of a FSLM and polarizers The threshold level of binarized input objects can be controlled by changing the power of a laser incident on a FLSM Experimental results with a high discrimination capability are presented to support the numerical correlation performance

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