All optical phase-only filtering correlation with binarized inputs by a ferroelectric liquid-crystal spatial light modulator

被引：0
|
作者：
Takeshi Takahashi
Yukihiro Ishii
机构：
[1] University of Industrial Technology,Department of Telecommumination System Engineering
[2] Sagamihara,Department of Applied Physics
[3] Tokyo University of Science,undefined
来源：
Optical Review | 2010年 / 17卷
关键词：
ferroelectric spatial light modulator; binarization procedure; correlation performance; phase-only filter; real-time optical processing;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
All optical phase-only filtering correlator is constructed with an optically addressed ferroelectric liquid-crystal spatial light modulator (FSLM) for a binarized input object and a twisted-nematic liquid-crystal spatial-light modulator for a computer-generated phase-only filter. In order to improve the discrimination capability of a phase-only 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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页码：195 / 203
页数：8
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