Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2002.06a
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- Pages.207-210
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- 2002
Optical Decryption System of Binary Image Using Two-Wave Mixing in Photorefractive Crystal
광굴절 매질에서 2광파 혼합을 이용한 이진 영상 복호화 시스템
Abstract
We suggest binary image decryption system using two-wave mixing in photorefractive crystal. Compared with a conventional method, this method can make optical alignment easily, and brighten the encrypted image even if a small input signal, by index grating of photorefractive crystal. Also it can reconstruct the encrypted image by only reference beam in real time.
Keywords