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.

引用

页码：122 / 129

页数：8

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