scholarly journals Demonstration of Dipole-Induced Transparency Using Mirrored Split-Ring Resonator Metasurface For Microwave Applications

Author(s):  
Sarin VP ◽  
Rohith K. Raj ◽  
Vasudevan K

Abstract In this paper, dipole-induced transparency in the microwave regime is proposed and verified using experimental and simulation studies. A single layer mirrored Split-Ring Resonator (SRR) metasurface array working under the H⊥excitation scenario is used to achieveout-of-phase electric dipole moments on the metasurface for a normal incident plane wave. The emergence of the transparency window is accompanied by the destructive interference between out-of-phase oscillating electric dipole moments on the metasurfaceand is verified in computations by studying the radar Cross Section in full-wave electromagnetic simulations.We used the multipole scattering theory to validate the results computationally. The coupling effects are studied numerically, and the emergence of the transparency window is studied experimentally using transmission measurements inside an anechoic chamber using a vector network analyzer.

2018 ◽  
Vol 32 (04) ◽  
pp. 1850030 ◽  
Author(s):  
Feng Xue ◽  
Shao-Bin Liu ◽  
Hai-Feng Zhang ◽  
Yong-Diao Wen ◽  
Xiang-Kun Kong ◽  
...  

In this paper, a tunable electromagnetically induced transparency (EIT) based on S-PINs is theoretically analyzed. Unit cell of the structure consists of a cutwire (CW), split ring resonator (SRR), and solid state plasma (SS plasma) patches which are composed of S-PIN array. The destructive interference between the CW and SRR results in a narrowband transparency window accompanied with strong phase dispersion. The proposed design can obtain a tunable EIT with different frequencies range from 12.8 GHz to 16.5 GHz in a simple method by switching these S-PINs on or off selectively. The related parameters of the S-PIN such as the size, carrier concentration, and volt-ampere characteristics have been studied theoretically. The interaction and coupling between two resonators are investigated in detail by the analysis of the current distribution and E-field strength as well. The research results provide an effective way to realize reconfigurable compact slow-light devices.


2020 ◽  
Vol 10 (15) ◽  
pp. 5267 ◽  
Author(s):  
Yuhang Liao ◽  
Yu-Sheng Lin

We propose a reconfigurable terahertz (THz) metamaterial (RTM) to investigate its multifunctional electromagnetic characteristics by moving the meta-atoms of split-ring resonator (SRR) array. It shows the preferable and capable adjustability in the THz frequency range. The electromagnetic characteristics of the proposed RTM device are compared and analyzed by moving the meta-atoms in different polarized transverse magnetic (TM) and transverse electric (TE) modes. The symmetrical meta-atoms of RTM device exhibit a resonant tuning range of several tens of GHz and the asymmetrical meta-atoms of RTM device exhibit the better tunability. Therefore, an RTM device with reconfigurable meta-atoms possesses the resonance shifting, polarization switching, electromagnetically induced transparency (EIT) switching and multiband to single-band switching characteristics. This proposed RTM device provides the potential possibilities for the use of THz-wave optoelectronics with tunable resonance, EIT analog and tunable multiresonance characteristics.


2007 ◽  
Vol 2007 ◽  
pp. 1-10 ◽  
Author(s):  
John F. O'Hara ◽  
Evgenya Smirnova ◽  
Abul K. Azad ◽  
Hou-Tong Chen ◽  
Antoinette J. Taylor

The properties of planar, single-layer metamaterials, or metafilms, are studied by varying the structural components of the split-ring resonators used to comprise the overall medium. Measurements and simulations reveal how minor design variations in split-ring resonator structures can result in significant changes in the macroscopic properties of the metafilm. A transmission-line/circuit model is also used to clarify some of the behavior and design limitations of the metafilms. Though our results are illustrated in the terahertz frequency range, the work has broader implications, particularly with respect to filtering, modulation, and switching devices.


IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 28054-28063
Author(s):  
Muhammad Salman Salman ◽  
M. Ismail Khan ◽  
Farooq A. Tahir ◽  
Hatem Rmili

Crystals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 146 ◽  
Author(s):  
Guanqi Wang ◽  
Xianbin Zhang ◽  
Lei Zhang ◽  
Xuyan Wei

New technologies and materials with superior characteristics impel great development of functional devices in the terahertz field. The dynamically tunable plasmon-induced transparency (PIT) based on radiative–radiative-coupling in terahertz hybrid metal–graphene metamaterial is numerically investigated in this paper. For the active manipulation of the PIT device, the single-layer graphene is integrated into the proposed structure consisting of the split-ring-resonator (SRR) and the closed-ring-resonator (CRR). Dynamically adjusting Fermi energy in graphene leads to modulation of the PIT window, allowing for the active control of the group delay. From the simulated electrical field distributions and effective circuit model to analyze, the transmission spectrum modulation can be attributed to the altering in the energy loss of the dark mode resonator through the conduction effect of the graphene layer. Our work offers theoretical references for the development of slow light terahertz devices in the future.


2013 ◽  
Vol 137 ◽  
pp. 239-254 ◽  
Author(s):  
Lei Zhu ◽  
Fan-Yi Meng ◽  
Fang Zhang ◽  
Jiahui Fu ◽  
Qun Wu ◽  
...  

2015 ◽  
Vol 355 ◽  
pp. 337-341 ◽  
Author(s):  
Chuanqi Li ◽  
Lei Huang ◽  
Wenyan Wang ◽  
Xiangjun Ma ◽  
Shengbang Zhou ◽  
...  

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