Phase-shifting joint-transform correlator with a wavelength-shifted laser diode

被引：1
|
作者：
Takahashi, T [1 ]
Ishii, Y [1 ]
机构：
[1] Univ Ind Technol Sagamihara, Dept Elect, Sagamihara, Kanagawa 2291196, Japan
来源：
OPTICAL INFORMATION PROCESSING TECHNOLOGY | 2002年 / 4929卷
关键词：
laser diode; wavelength tunability; phase-shifting interferometer; joint-transform phase correlator; multiple-object recognition;
D O I：
10.1117/12.483222
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
A joint-transform phase correlator is presented for processing multiple-pattern recognition that uses the six-step phase-shifting interferometer with a wavelength-shifted laser diode. The correlation peaks are obtained by the numerical Fourier transformation of a measured phase in an on-axis joint power spectrum. Multiple-pattern phase correlation can be performed to demonstrate high discrimination without the intermodulation owing to zero optical path differences between multiple targets in the interferometer. The experimental results are shown.
引用
收藏
页码：254 / 266
页数：13
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