Microwave modulated by communication light based on hybrid graphene-metal structure patch antenna

Mengting Zeng; Liangping Xia; Cheng Shan; Man Zhang; Hong Tu; Fuhua Gao; Shaoyun Yin; Chunlei Du

doi:10.1117/12.2604948

24 November 2021 Microwave modulated by communication light based on hybrid graphene-metal structure patch antenna

Mengting Zeng, Liangping Xia, Cheng Shan, Man Zhang, Hong Tu, Fuhua Gao, Shaoyun Yin, Chunlei Du

Proceedings Volume 12062, AOPC 2021: Optoelectronics and Nanophotonics; 120620D (2021) https://doi.org/10.1117/12.2604948
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

An investigation on hybrid graphene-metal structure patch antenna has been carried out in the presented paper. The microwave radiation performance of the antenna is controlled by the optical tuning characteristic of graphene. The surface conductivity of graphene is changed, when variation of chemical potential is happened which can be regulated by an exterior light field. With simulations, the S11 coefficient of antenna is changed with a maximum of 32.2 dB when the chemical potential of graphene varies from 0 eV to 1 eV. The effect of different structure parameters, such as metal radiating patch sizes and graphene film widths, on the S11 coefficient in the graphene based antenna is further analyzed by simulations. With experiments, the measured S11 coefficient decreases gradually with optical intensity increases when using communication light with the wavelength of 1550 nm as modulation light. When the optical intensity of the communication light varieties from 0 mW to 25 mW, the S11 coefficient of the microwave is changed from -18.7 dB to -19 dB and the modulation depth is 0.3 dB. The results demonstrate the proposed method is a good candidate for modulating microwave directly by communication light.

Citation Download Citation

Mengting Zeng, Liangping Xia, Cheng Shan, Man Zhang, Hong Tu, Fuhua Gao, Shaoyun Yin, and Chunlei Du "Microwave modulated by communication light based on hybrid graphene-metal structure patch antenna", Proc. SPIE 12062, AOPC 2021: Optoelectronics and Nanophotonics, 120620D (24 November 2021); https://doi.org/10.1117/12.2604948

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