TY - JOUR
T1 - Symmetry Breaking and Resonances Hybridization in Vertical Split Ring Resonator Metamaterials and the Excellent Sensing Potential
AU - Wang, Wei
AU - Yan, Fengping
AU - Tan, Siyu
AU - Li, Haisu
AU - Du, Xuemei
AU - Zhang, Luna
AU - Bai, Zhuoya
AU - Cheng, Dan
AU - Zhou, Hong
AU - Hou, Yafei
N1 - Funding Information:
Manuscript received March 28, 2019; revised June 9, 2019; accepted July 16, 2019. Date of publication July 18, 2019; date of current version September 24, 2019. This work was supported in part by the National Natural Science Foundation of China (61620106014, 61827818, and 61805010) and in part by Beijing Natural Science Foundation (4192048). (Corresponding author: Fengping Yan.) W. Wang, F. Yan, H. Li, X. Du, L. Zhang, Z. Bai, and D. Cheng are with the Key Laboratory of All Optical Network and Advanced Telecommunication of Electromagnetic Compatibility, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China (e-mail: 15111006@bjtu.edu.cn; fpyan@bjtu.edu.cn; lihaisu@bjtu.edu.cn; 18111011@bjtu.edu.cn; 15111007@ bjtu.edu.cn; 16111003@bjtu.edu.cn; 16111004@bjtu.edu.cn).
Publisher Copyright:
© 1983-2012 IEEE.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - The resonances with narrow linewidths generated in metamaterials are valuable for numerous applications ranging from bio-sensing to narrow-band filter. And breaking structural symmetry of metamaterials is one of the common and efficient approaches to achieve such sharp resonances. In this paper, we present symmetry breaking introduced in vertical split ring resonators (VSRR) metamaterials to excite narrow resonance. Different from the previously reported planar asymmetric metamaterials, the three-dimensional metamaterials are dominantly excited by the magnetic field component of the terahertz illumination together with the electric component. In this case, sharp resonances with characteristic magnetic field distributions are excited. And the sharpest resonance shows up with an ultra-narrow line-width (full width at half maximum, FWHM is 5.90 GHz) and high Q of 327 at 1.93 THz. Through systematic theoretical analysis and numerical mode implementation, we reveal the sharp resonance dips are produced by resonance hybridization between a resonance mode induced by the destruction of the structural symmetry and another special resonance inherent in the symmetric VSRR metamaterials. In addition, the fabrication robustness and sensing potential of the asymmetric VSRR metamaterials are explored in this paper. The results show that the AVSRR design is insensitive to the errors in the fabrication process, like rough metal surface and smooth metal corner, but highly sensitive to the approaching substance, which prove the excellent sensing performance.
AB - The resonances with narrow linewidths generated in metamaterials are valuable for numerous applications ranging from bio-sensing to narrow-band filter. And breaking structural symmetry of metamaterials is one of the common and efficient approaches to achieve such sharp resonances. In this paper, we present symmetry breaking introduced in vertical split ring resonators (VSRR) metamaterials to excite narrow resonance. Different from the previously reported planar asymmetric metamaterials, the three-dimensional metamaterials are dominantly excited by the magnetic field component of the terahertz illumination together with the electric component. In this case, sharp resonances with characteristic magnetic field distributions are excited. And the sharpest resonance shows up with an ultra-narrow line-width (full width at half maximum, FWHM is 5.90 GHz) and high Q of 327 at 1.93 THz. Through systematic theoretical analysis and numerical mode implementation, we reveal the sharp resonance dips are produced by resonance hybridization between a resonance mode induced by the destruction of the structural symmetry and another special resonance inherent in the symmetric VSRR metamaterials. In addition, the fabrication robustness and sensing potential of the asymmetric VSRR metamaterials are explored in this paper. The results show that the AVSRR design is insensitive to the errors in the fabrication process, like rough metal surface and smooth metal corner, but highly sensitive to the approaching substance, which prove the excellent sensing performance.
KW - Magnetic resonance and terahertz metamaterial sensor
KW - metamaterials
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U2 - 10.1109/JLT.2019.2929771
DO - 10.1109/JLT.2019.2929771
M3 - Article
AN - SCOPUS:85077366303
VL - 37
SP - 5149
EP - 5157
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
SN - 0733-8724
IS - 19
M1 - 8765752
ER -