期刊
APPLIED SCIENCES-BASEL
卷 10, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/app10093033
关键词
guided-mode resonance; electromagnetically induced transparency; high quality factor; double spectral; refractive index sensor
类别
资金
- National Natural Science Foundation of China [60907003, 61805278]
- Guangxi Science Foundation [2017GXNSFAA198227]
- China Postdoctoral Science Foundation [2018M633704]
- Foundation of NUDT [JC13-02-13, ZK17-03-01]
- Hunan Provincial Natural Science Foundation of China [13JJ3001]
- Program for New Century Excellent Talents in University [NCET-12-0142]
The realization of the electromagnetically induced transparency (EIT) effect based on guided-mode resonance (GMR) has attracted a lot of attention. However, achieving the multispectral EIT effect in this way has not been studied. Here, we numerically realize a double EIT-ike effect with extremely high Q factors based on a GMR system with the double-bar dielectric grating structure, and the Q factors can reach 35,104 and 24,423, respectively. Moreover, the resonance wavelengths of the two EIT peaks can be flexibly controlled by changing the corresponding structural parameters. The figure of merit (FOM) of the dual-mode refractive index sensor based on this system can reach 571.88 and 587.42, respectively. Our work provides a novel method to achieve double EIT-like effects, which can be applied to the dual mode sensor, dual channel slow light and so on.
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