Graphene-based tunable terahertz electromagnetically induced transparency using metamaterial structure
Kai-Da Xu
School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an, China
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
Search for more papers by this authorShengpei Xia
School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an, China
Search for more papers by this authorCorresponding Author
Yijun Cai
Smart Sensing Integrated Circuit Engineering Research Center of Universities in Fujian Province, Xiamen University of Technology, Xiamen, China
Correspondence Yijun Cai, Smart Sensing Integrated Circuit Engineering Research Center of Universities in Fujian Province, Xiamen University of Technology, Xiamen 361024, China.
Email: [email protected]
Search for more papers by this authorJianxing Li
School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an, China
Search for more papers by this authorJianlei Cui
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
Search for more papers by this authorChengying Chen
Smart Sensing Integrated Circuit Engineering Research Center of Universities in Fujian Province, Xiamen University of Technology, Xiamen, China
Key Laboratory of Microelectronic Devices and Integrated Technology Institute of Microelectronics, Chinese Academy of Sciences, Beijing, China
Search for more papers by this authorJianmei Zhou
School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an, China
Search for more papers by this authorKai-Da Xu
School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an, China
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
Search for more papers by this authorShengpei Xia
School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an, China
Search for more papers by this authorCorresponding Author
Yijun Cai
Smart Sensing Integrated Circuit Engineering Research Center of Universities in Fujian Province, Xiamen University of Technology, Xiamen, China
Correspondence Yijun Cai, Smart Sensing Integrated Circuit Engineering Research Center of Universities in Fujian Province, Xiamen University of Technology, Xiamen 361024, China.
Email: [email protected]
Search for more papers by this authorJianxing Li
School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an, China
Search for more papers by this authorJianlei Cui
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
Search for more papers by this authorChengying Chen
Smart Sensing Integrated Circuit Engineering Research Center of Universities in Fujian Province, Xiamen University of Technology, Xiamen, China
Key Laboratory of Microelectronic Devices and Integrated Technology Institute of Microelectronics, Chinese Academy of Sciences, Beijing, China
Search for more papers by this authorJianmei Zhou
School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an, China
Search for more papers by this authorAbstract
A graphene-based tunable electromagnetically induced transparency (EIT)-like metamaterial structure operating at the terahertz regime is proposed and numerically analyzed. The unit cell of the metamaterial structure consists of a split-ring resonator and twofolded-line pair resonators, performing as the quasi-dark mode and bright mode, respectively. When the incident waves vertically illuminate upon the metamaterial structure, a transmission peak can be observed. Moreover, the frequency of the transparency window can be flexibly adjusted by changing the Fermi energy level of graphene. A classical coupled two-oscillator model is employed to theoretically analyze the physical mechanism of EIT-like phenomenon, which is due to the near-field coupling effect between the bright and the quasi-dark modes. The proposed work will be a good candidate for the design of different graphene-based tunable EIT devices at different frequency spectra with potential applications in optical sensors.
CONFLICT OF INTEREST
The authors declare no conflict of interest.
Open Research
DATA AVAILABILITY STATEMENT
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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