Shift-invariant limited photorefractive based correlators

Francis T.S. Yu, Shizhuo Yin, Chun Te Li

Research output: Contribution to journalConference articlepeer-review


Although photorefractive (PR) filter has the advantage of large storage capacity, the thickness of the filter also impairs the target shift limitation. In this paper, we have investigated the thickness requirement, as imposed by the focal depth of the transform lens, and the shift-invariant, as imposed by the Bragg diffraction. The commonly used photorefractive-based correlators are studied, which are VanderLugt (VLC), joint transform (JTC), and reflective types (RD) correlators. We have shown that PR-RC performance better, in terms of shift-invariant tolerance.

Original languageEnglish (US)
Pages (from-to)231-240
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1998
EventPhotorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IV - San Diego, CA, United States
Duration: Jul 22 1998Jul 23 1998

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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