Gold nanoparticles enhanced microwave modulation with 1.55um light in graphene-based antenna

Cheng Shan; LiangPing Xia; Man Zhang; MengTing Zeng; Lin Qin; Hong Tu; YaDong Li; ShiFa Wang; SuiHu Dang; ChunLei Du

doi:10.1117/12.2642407

4 January 2023 Gold nanoparticle enhanced microwave modulation with 1.55μm light in graphene-based antenna

Cheng Shan, LiangPing Xia, Man Zhang, MengTing Zeng, Lin Qin, Hong Tu, YaDong Li, ShiFa Wang, SuiHu Dang, ChunLei Du

Proceedings Volume 12322, Nanophotonics, Micro/Nano Optics, and Plasmonics VIII; 123220E (2023) https://doi.org/10.1117/12.2642407
Event: SPIE/COS Photonics Asia, 2022, Online Only

Abstract

A gold nanoparticle enhanced microwave modulation with 1.55 μm light in graphene-based antenna has been studied in this paper. The modulation of antenna radiation is achieved by the conductivity tunable characteristic of graphene, and the conductivity of graphene is controlled by light. With the introduction of the gold nanoparticles for exciting optical wave localized enhancement, the interaction between the graphene and the light is enhanced. And then the Fermi level is enlarged, leading to the enhancement of the conductivity turning rage of graphene. At last, the modulation of microwave radiation is enhanced. In the simulation, as the Fermi level of graphene increases from 0.1 eV to 0.4 eV, the S11 coefficient of resonant point of antenna changes by 8 dB. In the experiment, the 0-29.4 mw 1550 nm light is used, the S11 coefficient of graphene antenna with gold nanoparticles changes by 1 dB, which is 2 times higher than that of graphene antenna without gold nanoparticles. The result demonstrates that the microwave modulation by light in graphene-based antenna could be enhanced by gold nanostructures with the localized surface plasmons.

Conference Presentation

Citation Download Citation

Cheng Shan, LiangPing Xia, Man Zhang, MengTing Zeng, Lin Qin, Hong Tu, YaDong Li, ShiFa Wang, SuiHu Dang, and ChunLei Du "Gold nanoparticle enhanced microwave modulation with 1.55μm light in graphene-based antenna", Proc. SPIE 12322, Nanophotonics, Micro/Nano Optics, and Plasmonics VIII, 123220E (4 January 2023); https://doi.org/10.1117/12.2642407

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