Work

Reconfigurable beam splitter with arbitrary spin control of transmitted and reflected waves

Year: 2026

Type: article

Abstract: In this paper, we propose a three-layer cascaded metasurface that functions as a reconfigurable beam splitter operating at 11 GHz. Through the joint rotation of the middle and bottom layers, the metasurface can split incident linearly polarized waves into circularly polarized transmitted and reflected waves with arbitrary spin combinations. This unique capability is attributed to its strip-slot-strip cascaded structure, which effectively enhances the stability of the interlayer coupling effect. Notably, both the simulated and measured axial ratios of the reflected and transmitted waves across all interlayer rotation states are found to be lower than 3 dB. Furthermore, benefiting from the electric dipole resonances excited on the top and bottom layers under oblique incidence, the metasurface maintains robust performance under 15° transverse-electric (TE) and transverse-magnetic (TM) oblique incidences. The proposed reconfigurable circularly polarized beam splitter exhibits considerable potential for applications in modern optics and satellite communication systems.

Source: Optics Express

DOI: 10.1364/oe.604517

Authors: Linxiao Wu, Ke Chen, Mai Yan, Yi Wang, Haiyong Zheng

Institution: Nanjing University

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: Natural Science Foundation of Shandong Province