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 - Dec 1 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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