Ultra-sensitive absolute angular position sensing using pixelated metasurface

Wanghang Gu; Junchen Liu; Xinghua Qu; Fumin Zhang

doi:10.1117/12.3000304

27 November 2023 Ultra-sensitive absolute angular position sensing using pixelated metasurface

Wanghang Gu, Junchen Liu, Xinghua Qu, Fumin Zhang

Proceedings Volume 12771, Advanced Sensor Systems and Applications XIII; 1277120 (2023) https://doi.org/10.1117/12.3000304
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

Efficient and ultra-sensitive sensing of absolute angular position are critical technological requirements in various fields. Traditional angle measurement methods have disadvantages in terms of accuracy and device complexity, at the same time, the absolute angular position information cannot be obtained. Here, we report an laser angular position approach based on pixelated metasurfaces. By harnessing the interaction between a C-band Optical Frequency Comb (OFC) laser source and a plasmonic metasurface, we achieve precise angle encoding, enabling each individual meta-pixel within the pixelated metasurface to exhibit ultra-sensitive responses to angle variations. Experimental results demonstrate an angle resolution as low as µrad-level. Furthermore, by controlling the dimensions of meta-atom structures and designing specific combinations of meta-pixels, we manipulate the unique angular responses of individual pixels, effectively creating visualized unique scattering pattern. This technology efficiently captures angle information, and based on this, we demonstrate absolute angular position sensing.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Wanghang Gu, Junchen Liu, Xinghua Qu, and Fumin Zhang "Ultra-sensitive absolute angular position sensing using pixelated metasurface", Proc. SPIE 12771, Advanced Sensor Systems and Applications XIII, 1277120 (27 November 2023); https://doi.org/10.1117/12.3000304

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