대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
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$BaTiO_{3}$ 의 광굴절 현상을 이용한 실시간 광연상 메모리에 관한 연구

A Study on the Real-time Optical Associative Memory Using Photorefractive Effects in $BaTiO_{3}$

  • Ihm, J.T. (Dept. of Electronic Eng. Yonsei Univ.) ;
  • Oh, C.S. (Dept. of Computer Eng. Chungbuk Univ.) ;
  • Kim, S.I. (Dept. of Electronic Eng. Kyungwon Univ.) ;
  • Park, H.K. (Dept. of Electronic Eng. Yonsei Univ.)
  • 발행 : 1988.07.01
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초록

In this paper, the real-time optical associative memory using multiple hologram which is generated with two angular multiplexed reference beams and Fourier transformed object beam in the $BaTiO_{3}$ crystal based on DFWM mechanism. When one image is recorded in the $BaTiO_{3}$ crystal, complete image can be recalled by 9 % partial input of the stored original image without any additional thresholding and optical feedback process. As an experimental result of multiple Fourier hologram which is recorded with two binary images, OHCHAS and PARKHK, we can obtain complete image recalled by 1/6 partial input of the stored image.

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