Proceedings of the Optical Society of Korea Conference (한국광학회:학술대회논문집)

Optical Society of Korea (한국광학회)
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Bi-directional encryption and transmission of binary data with 4-step phase-shifting interferometry in digital network

디지털망에서의 4-step 위상 천이 간섭계를 이용한 이진 데이터의 쌍방향 광 암호화 및 전송

  • 이현진 (수원대학교 전자공학과) ;
  • 길상근 (수원대학교 전자공학과) ;
  • 전석희 (인천대학교 전자공학과) ;
  • 김남 (충북대학교 정보통신공학부)
  • Published : 2006.02.09
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Abstract

We present a new binary data encryption and transmission technique based on 4-step phase-shifting interferometry for a security system. Phase-shifting interferometry is used for recording phase and amplitude information on CCD device. 4-step phase-shifting is implemented by moving the PZT mirror with equidistant phase steps of ${\pi}/2$. The basic idea is that we reuse a 256 gray-level digital hologram to encrypt binary data with 4-step phase-shifting interferometry.

Keywords