scholarly journals Double E-shaped toroidal metasurface with high Q-factor Fano resonance and electromagnetically induced transparency

AIP Advances ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 095011
Author(s):  
Ting Chen ◽  
Tianyu Xiang ◽  
Jianwei Wang ◽  
Tao Lei ◽  
Fushan Lu
Keyword(s):  
Fano Resonance ◽  
Electromagnetically Induced Transparency ◽  
Q Factor ◽  
High Q ◽  
Induced Transparency

scholarly journals Analogue of electromagnetically induced transparency with high-Q factor in metal-dielectric metamaterials based on bright-bright mode coupling

2019 ◽  
Vol 27 (26) ◽  
pp. 37590 ◽  
Author(s):  
Fengyan He ◽  
Bingxin Han ◽  
Xiangjun Li ◽  
Tingting Lang ◽  
Xufeng Jing ◽  
...  
Keyword(s):  
Mode Coupling ◽  
Electromagnetically Induced Transparency ◽  
Q Factor ◽  
High Q ◽  
Induced Transparency ◽  
Bright Mode

scholarly journals All-dielectric Metamaterial for Electromagnetically-induced Transparency in Optical Region

2020 ◽  
Vol 30 (2) ◽  
pp. 189
Author(s):  
Pham The Linh ◽  
Nguyen Thi Viet Ninh ◽  
Nguyen Dinh Quang ◽  
Tran Tien Lam ◽  
Nguyen Van Ngoc ◽  
...  
Keyword(s):  
Electromagnetic Waves ◽  
Group Delay ◽  
Electromagnetically Induced Transparency ◽  
Dielectric Materials ◽  
Factor Group ◽  
Ohmic Loss ◽  
Q Factor ◽  
Characteristic Parameters ◽  
Optical Region ◽  
Induced Transparency

Metamaterial (MM) is emerging as a promising approach to manipulate electromagnetic waves, spanning from radio frequency to the optical region. In this paper, we employ an effect called electromagnetically-induced transparency (EIT) in all-dielectric MM structures to create a narrow transparent window in opaque broadband of the optical region (580-670 nm). Using dielectric materials instead of metals can mitigate the large non-radiative ohmic loss on the metal surface. The unit-cell of MM consists of Silicon (Si) bars on Silicon dioxide (SiO\(_{2}\)) substrate, in which two bars are directed horizontally and one bar is directed vertically. By changing the relative position and dimension of the Si bars, the EIT effect could be achieved. The optical properties of the proposed MM are investigated numerically using the finite difference method with commercial software Computer Simulation Technology (CST). Then, characteristic parameters of MM exhibiting EIT effect (EIT-MM), including Q-factor, group delay, are calculated to evaluate the applicability of EIT-MM to sensing and light confinement.

scholarly journals Broken symmetry theta-shaped dielectric arrays for a high Q-factor Fano resonance with anapole excitation and magnetic field tunability

OSA Continuum ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 507 ◽  
Author(s):  
Wudeng Wang ◽  
Xin Zhao ◽  
Li Xiong ◽  
Li Zheng ◽  
Ying Shi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Fano Resonance ◽  
Broken Symmetry ◽  
Q Factor ◽  
High Q

scholarly journals High Q-Factor Hybrid Metamaterial Waveguide Multi-Fano Resonance Sensor in the Visible Wavelength Range

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1583
Author(s):  
Hongyan Yang ◽  
Yupeng Chen ◽  
Mengyin Liu ◽  
Gongli Xiao ◽  
Yunhan Luo ◽  
...  
Keyword(s):  
Quality Factor ◽  
Wavelength Range ◽  
Fano Resonance ◽  
Q Factor ◽  
High Q ◽  
Visible Wavelength ◽  
Metamaterial Waveguide ◽  
Visible Wavelength Range ◽  
Resonance Sensor ◽  
Hybrid Metamaterial

We propose a high quality-factor (Q-factor) multi-Fano resonance hybrid metamaterial waveguide (HMW) sensor. By ingeniously designing a metal/dielectric hybrid waveguide structure, we can effectively tailor multi-Fano resonance peaks’ reflectance spectrum appearing in the visible wavelength range. In order to balance the high Q-factor and the best Fano resonance modulation depth, numerical calculation results demonstrated that the ultra-narrow linewidth resolution, the single-side quality factor, and Figure of Merit (FOM) can reach 1.7 nm, 690, and 236, respectively. Compared with the reported high Q-value (483) in the near-infrared band, an increase of 30% is achieved. Our proposed design may extend the application of Fano resonance in HMW from mid-infrared, terahertz band to visible band and have important research value in the fields of multi-wavelength non-labeled biosensing and slow light devices.

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