Laser & Optoelectronics Progress, Volume. 60, Issue 9, 0925001(2023)
Multiple Fano Resonances and Optical Sensing Based on C3-Symmetry-Breaking
In this study, we numerically investigate surface plasmonic triple Fano resonances and optical sensing in the near-infrared band using a hybrid metasurface consisting of concentric C3-hole and circular-ring-aperture unit cells. The results reveal that by changing the symmetry breaking of the C3 unit cells, we can not only induce a tunable multi Fano resonance effect but also enable self-reference optical sensing. In addition, a radiation monitoring sensing capability, which depends on the depth of the Fano dips, can be realized by varying the inner radius of the circular-ring-aperture unit cells. Our results provide a new perspective for the design of compact and tunable Fano resonance photonic devices and enable the incorporation of periodic subwavelength metal nanostructures into relevant biosensing and optical communication applications.
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Jingzhao Zhang, Xiaoqing Luo, Xiaofeng Xu, Youlin Luo, Weihua Zhu, Zhiyong Chen, Xinlin Wang. Multiple Fano Resonances and Optical Sensing Based on C3-Symmetry-Breaking[J]. Laser & Optoelectronics Progress, 2023, 60(9): 0925001
Category: OPTOELECTRONICS
Received: Jan. 14, 2022
Accepted: Feb. 21, 2022
Published Online: May. 9, 2023
The Author Email: Luo Xiaoqing (xqluophys@gmail.com), Wang Xinlin (wxl_ly000@aliyun.com)