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Designable optical differential operation based on surface plasmon resonance.

Daxiu Xia, Qijun Zhi, Jingxian Yang

    Optics Express
    |October 19, 2022
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel optical differential computing device using surface plasmon resonance (SPR) in a three-layer structure. The device offers high-sensitivity, real-time edge detection for applications in autonomous driving and target recognition.

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    Area of Science:

    • Photonics
    • Optical Computing
    • Plasmonics

    Background:

    • Traditional digital computing faces limitations in speed and power consumption.
    • Optical differential computing offers potential advantages in high-speed, low-power processing.
    • Surface Plasmon Resonance (SPR) is a phenomenon sensitive to changes in optical properties.

    Purpose of the Study:

    • To design a novel optical differential operation based on SPR.
    • To investigate the use of a three-layer (glass-metal-air) structure for optical differentiation.
    • To demonstrate real-time edge imaging for target recognition.

    Main Methods:

    • Theoretical analysis of light beam reflection in a three-layer structure.
    • Excitation of SPR to manipulate the photonic spin Hall effect (SHE).
    • Investigation of transverse beam displacement by adjusting incident angle and metal film thickness.

    Main Results:

    • The three-layer structure theoretically achieves one-dimensional optical differential operation.
    • SPR excitation leads to dramatic changes in spin-dependent splitting within the photonic SHE.
    • High sensitivity and designable differential operation are achieved by tuning structural parameters.

    Conclusions:

    • A designable optical differential operation based on SPR is proposed and theoretically validated.
    • The device can achieve real-time imaging of target edges with adjustable effects.
    • Potential applications include autonomous driving and advanced target recognition systems.