Graphene-coated D-shaped terahertz fiber modulator

Frontiers in Physics

Physics

Longhuang Tang¹  Jianquan Yao²  Xiuyan Li³  Shaona Wang³  Xianguo Li³  Pingjuan Niu³  Hua Bai³  Mengya Su³  Jia Shi⁴ 

[1] Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China;Key Laboratory of Opto-Electronics Information Technology (Ministry of Education), School of Precision Instruments and Opto-Electronic Engineering, Tianjin University, Tianjin, China;Tianjin Key Laboratory of Optoelectronic Detection Technology and System, School of Electronic and Information Engineering, Tiangong University, Tianjin, China;Tianjin Key Laboratory of Optoelectronic Detection Technology and System, School of Electronic and Information Engineering, Tiangong University, Tianjin, China;Key Laboratory of Opto-Electronics Information Technology (Ministry of Education), School of Precision Instruments and Opto-Electronic Engineering, Tianjin University, Tianjin, China;

关键词: optical fibers;    electro-optic modulators;    graphene;    Fermi level;    terahertz communications;   

DOI  :  10.3389/fphy.2023.1202839

 received in 2023-04-09, accepted in 2023-05-17,  发布年份 2023

来源: Frontiers

【 摘 要 】

A terahertz (THz) fiber is of interest due to low loss and easy beam shaping. Graphene plays an important role in modulating the optical signal. In this paper, a graphene-coated D-shaped THz fiber modulator is proposed. The performance of the proposed modulator is investigated by the finite element method. The inference of geometric parameters of the structure on the proposed modulator is also analyzed, and an optimal structure is obtained. Simulation results show that the confinement loss and the full width at half-maximum (FWHM) can be tuned by adjusting the Fermi level of graphene. The proposed THz fiber modulator shows potential in future THz fiber communications.

【 授权许可】

Unknown   
Copyright © 2023 Wang, Su, Tang, Li, Li, Bai, Niu, Shi and Yao.