Applications of photorefractive polymer to pattern recognition

被引：4
|
作者：
Joo, WJ [1 ]
Choi, CS [1 ]
Moon, IK [1 ]
Kim, N [1 ]
机构：
[1] Hanyang Univ, Dept Chem, Ctr Organ Photorefract Mat, Seoul 133791, South Korea
来源：
ORGANIC PHOTOREFRACTIVE AND PHOTOSENSITIVE MATERIALS FOR HOLOGRAPHIC APPLICATIONS | 2002年 / 4802卷
关键词：
photorefractive polymer; information processing; reversible hologram; pattern recognition; optical joint-transform correlator;
D O I：
10.1117/12.452428
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The polymeric photorefractive composite was prepared from the mixture of carbazole-substituted polysiloxane as a photoconducting medium, 2,4,7-trinitro-9-fluorenone as a photo-sensitizer, and 2-{3-[(E)-2-(dibutylamino)-1-ethenyl]-5,5-dimethyl-2-cyclohexenyliden} malononitrile as an optically nonlinear chromophore. This polymeric composite with the thickness of 100 mum exhibited the high diffraction efficiency of 92% at the applied electric field of 30V/mum, which corresponds the refractive index modulation (Deltan) of 3 x 10(-3). The applications of this polymeric composite to pattern recognition are demonstrated. Character and fingerprint recognitions based on joint-transform optical correlation are successfully demonstrated.
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页码：122 / 129
页数：8
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