scholarly journals Tunable Plasmon-Induced Transparency through Bright Mode Resonator in a Metal–Graphene Terahertz Metamaterial

2020 ◽  
Vol 10 (16) ◽  
pp. 5550
Author(s):  
Guanqi Wang ◽  
Xianbin Zhang ◽  
Xuyan Wei
Keyword(s):  
Group Delay ◽  
Monolayer Graphene ◽  
Device Structure ◽  
Coupling Condition ◽  
Conductive Film ◽  
Induced Transparency ◽  
Bright Mode ◽  
Mode Resonator ◽  
The Ideal ◽  
Plasmon Induced Transparency

The combination of graphene and metamaterials is the ideal route to achieve active control of the electromagnetic wave in the terahertz (THz) regime. Here, the tunable plasmon-induced transparency (PIT) metamaterial, integrating metal resonators with tunable graphene, is numerically investigated at THz frequencies. By varying the Fermi energy of graphene, the reconfigurable coupling condition is actively modulated and continuous manipulation of the metamaterial resonance intensity is achieved. In this device structure, monolayer graphene operates as a tunable conductive film which yields actively controlled PIT behavior and the accompanied group delay. This device concept provides theoretical guidance to design compact terahertz modulation devices.

Dual plasmon-induced transparency and slow light effect in monolayer graphene structure with rectangular defects

2018 ◽  
Vol 52 (2) ◽  
pp. 025104 ◽  
Author(s):  
Hui Xu ◽  
Mingzhuo Zhao ◽  
Mingfei Zheng ◽  
Cuixiu Xiong ◽  
Baihui Zhang ◽  
...  
Keyword(s):  
Slow Light ◽  
Monolayer Graphene ◽  
Light Effect ◽  
Induced Transparency ◽  
Plasmon Induced Transparency

scholarly journals Broadband Filter and Adjustable Extinction Ratio Modulator Based on Metal-Graphene Hybrid Metamaterials

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1359 ◽  
Author(s):  
Haoying Sun ◽  
Lin Zhao ◽  
Jinsong Dai ◽  
Yaoyao Liang ◽  
Jianping Guo ◽  
...  
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Extinction Ratio ◽  
Optical Filters ◽  
Superior Performance ◽  
Dark Mode ◽  
Terahertz Communications ◽  
Transmission Window ◽  
Induced Transparency ◽  
Bright Mode ◽  
Mode Resonator

A novel multifunctional device based on a hybrid metal–graphene Electromagnetically induced transparency (EIT) metamaterial at the terahertz band is proposed. It is composed of a parallel cut wire pair (PCWP) that serves as a dark mode resonator, a vertical cut wire pair (VCWP) that serves as a bright mode resonator and a graphene ribbon that serves as a modulator. An ultra-broadband transmission window with 1.23 THz bandwidth can be obtained. The spectral extinction ratio can be tuned from 26% to 98% by changing the Fermi level of the graphene. Compared with previous work, our work has superior performance in the adjustable bandwidth of the transmission window without changing the structure of the dark and bright mode resonators, and has a high extinction ratio and dynamic adjustability. Besides, we present the specific application of the device in filters and optical modules. Therefore, we believe that such a metamaterial structure provides a new way to actively control EIT-like, which has promising applications in broadband optical filters and photoelectric intensity modulators in terahertz communications.

Tunable plasmon-induced transparency based on bright-bright mode coupling between two parallel graphene nanostrips

Plasmonics ◽  
2016 ◽  
Vol 11 (6) ◽  
pp. 1597-1602 ◽  
Author(s):  
Guang-Lai Fu ◽  
Xiang Zhai ◽  
Hong-Ju Li ◽  
Sheng-Xuan Xia ◽  
Ling-Ling Wang
Keyword(s):  
Mode Coupling ◽  
Induced Transparency ◽  
Bright Mode ◽  
Plasmon Induced Transparency

Electromagnetically induced transparency in terahertz metamaterial based on two-bright-mode resonator

2017 ◽  
Vol 13 (2) ◽  
pp. 95-99 ◽  
Author(s):  
Yan Liu ◽  
Sai Chen ◽  
Fei Fan ◽  
Meng Chen ◽  
Jin-jun Bai ◽  
...  
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Induced Transparency ◽  
Bright Mode ◽  
Mode Resonator

Tunable plasmon induced transparency based on bright–bright mode coupling graphene metamaterial

2018 ◽  
Vol 420 ◽  
pp. 78-83 ◽  
Author(s):  
Haifeng Cen ◽  
Faqiang Wang ◽  
Ruisheng Liang ◽  
Zhongchao Wei ◽  
Hongyun Meng ◽  
...  
Keyword(s):  
Mode Coupling ◽  
Induced Transparency ◽  
Bright Mode ◽  
Plasmon Induced Transparency

Tunable Terahertz Plasmon-Induced Transparency in Resonator-Coupled Dirac Semimetal Waveguides

2021 ◽  
Vol 36 (6) ◽  
pp. 676-683
Author(s):  
Daobin Wang ◽  
Jiahuan Yang ◽  
Wei Wang ◽  
Lihua Yuan ◽  
Xiaoxiao Li
Keyword(s):  
Optical Properties ◽  
Fermi Energy ◽  
Delay Time ◽  
Group Delay ◽  
The Finite Element Method ◽  
Group Delay Time ◽  
Dirac Semimetal ◽  
Induced Transparency ◽  
Maximum Group ◽  
Plasmon Induced Transparency

The bulk Dirac semimetal (BDS) is an interesting material, similar to graphene, which can dynamically adjust its optical properties via a variation in its Fermi energy or electrical voltage. In this work, a BDS-based plasmonic device, which enables tunable terahertz plasmon-induced transparency, was proposed and designed. By using the finite element method, the surface plasmon polariton and plasmon-induced transparency of this device were systematically investigated. The results demonstrate that the plasmon-induced transparency of such device can be dynamically tuned by varying its Fermi energy. When the Fermi energy changes from 55 meV to 95 meV, the maximum group delay time of the device increases from 13.2 ps to 21 ps. In the case of a cascading device, the maximum group delay time can be further pushed up to 44.57 ps. The influence of the ambient refractive index on the optical properties of the proposed device was also considered and investigated.

scholarly journals Power transmission and group delay in gain-assisted plasmon-induced transparency

AIP Advances ◽  
2013 ◽  
Vol 3 (3) ◽  
pp. 032138 ◽  
Author(s):  
Zi-Lan Deng ◽  
Jian-Wen Dong ◽  
He-Zhou Wang ◽  
S. H. Cheng ◽  
Jensen Li
Keyword(s):  
Group Delay ◽  
Power Transmission ◽  
Induced Transparency ◽  
Plasmon Induced Transparency
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