Broadband Optical Fully Differential Operation Based on the Spin-orbit Interaction of Light

TL;DR

This paper introduces a broadband optical differentiator leveraging spin-orbit interaction of light, enabling wavelength-independent edge detection for advanced image processing applications.

Contribution

It proposes a novel optical full differentiator based on spin-orbit interaction that operates broadband and is independent of wavelength, suitable for real-time image processing.

Findings

Demonstrated broadband edge detection through polarization adjustment

Achieved wavelength-independent operation due to geometric nature

Potential applications in autonomous driving and microscopic imaging

Abstract

Optical technology may provide important architectures for future computing, such as analog optical computing and image processing. Compared with traditional electric operation, optical operation has shown some unique advantages including faster operating speeds and lower power consumption. Here, we propose an optical full differentiator based on the spin-orbit interaction of light at a simple optical interface. The broadband optical operation is independent on the wavelength due to the nature of purely geometric. As an important application of the fully differential operation, the broadband image processing of edge detection is demonstrated. By adjusting the polarization of the incident beam, the one-dimension edge imaging at any desirable direction can be obtained. The broadband image processing of edge detection provides possible applications in autonomous driving, target recognition, microscopic imaging, and augmented reality.