Metasurface-integrated microring resonators for off-chip vortex beam generation

Jianzhi Huang; Wangke Yu; Zihang Zheng; Jize Yan; Xu Fang

doi:10.1117/12.2689032

28 November 2023 Metasurface-integrated microring resonators for off-chip vortex beam generation

Jianzhi Huang, Wangke Yu, Zihang Zheng, Jize Yan, Xu Fang

Proceedings Volume 12773, Nanophotonics and Micro/Nano Optics IX; 127730F (2023) https://doi.org/10.1117/12.2689032
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

Vortex beams that carry orbital angular momentum (OAM) have garnered significant attention, as they bring the degree of freedom of OAM to modern optical communication, beyond the traditional degrees of freedom such as amplitude, phase and polarization. Meanwhile, metasurfaces composed of ultra-thin layers of subwavelength structures have also been utilized for light manipulation. Nevertheless, the combination of these two concepts has not been explored in the form of microring resonator-based light emitter. In this work, we demonstrate a Si-based, passive, conjugate symmetrybreaking emitter in numerical simulation. This broken conjugate symmetry enables the emitter to generate OAMs with different topological charges, when it is driven at two opposite input directions.

Citation Download Citation

Jianzhi Huang, Wangke Yu, Zihang Zheng, Jize Yan, and Xu Fang "Metasurface-integrated microring resonators for off-chip vortex beam generation", Proc. SPIE 12773, Nanophotonics and Micro/Nano Optics IX, 127730F (28 November 2023); https://doi.org/10.1117/12.2689032

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