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The aim is to develop a compact analog optical system using fractional Fourier transform techniques for enhanced encryption.

Metasurface‐Based Optical Fractional Fourier Transform: Implementation and Applications

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The aim is to develop a compact analog optical system using fractional Fourier transform techniques for enhanced encryption.
Developed a metasurface-based analog optical fractional Fourier transform system.
Created two image encryption algorithms, one using Arnold transform and another for iterative dual-image processing.
Validated findings through numerical calculations, optical simulations, and physical experiments.
Demonstrated a high level of encryption security, indicated by a large encryption key space and key sensitivity.
Showed effectiveness of both invented encryption algorithms in achieving significant scrambling and secure data processing.

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Randomized trial demonstrates advanced optical encryption in images, suggesting a new approach to secure data processing.

Yu et al. (2026) studied this question.

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