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Two-dimensional photonic-crystal vertical-cavity array for nonlinear optical image processing.

D F Sievenpiper, C F Lam, E Yablonovitch

    Applied Optics
    |February 15, 2008
    PubMed
    Summary
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    We explored 2-D photonic crystals for optical image processing. Their defect properties enable nonlinear Boolean functions, useful for image manipulation tasks like noise reduction.

    Area of Science:

    • Photonics
    • Optical Engineering
    • Materials Science

    Background:

    • Two-dimensional (2-D) photonic crystals offer unique electromagnetic properties.
    • Vertical cavity arrays are key components in photonic devices.
    • Nonlinear optical processing requires materials with tunable optical responses.

    Purpose of the Study:

    • To investigate the electromagnetic properties of 2-D photonic-crystal arrays of vertical cavities.
    • To explore their application in nonlinear optical image processing.
    • To demonstrate the utility of these structures for image manipulation.

    Main Methods:

    • Determination of the 2-D photonic band structure.
    • Analysis of cavity interaction through overlapping wave functions.

    Related Experiment Videos

  • Study of defect properties within the 2-D lattice.

    • Main Results:

    • The photonic band structure is influenced by inter-cavity interaction.
    • Defects enable nearest-neighbor nonlinear Boolean functions (AND, OR, XOR).
    • Successful demonstration of noise removal from an image using a nearest-neighbor AND function.

    Conclusions:

    • 2-D photonic-crystal arrays of vertical cavities are suitable for nonlinear optical image processing.
    • Inter-cavity interactions and defect engineering are crucial for realizing Boolean logic.
    • These structures show promise for advanced optical computing and image manipulation applications.