诺共振
栅栏
电介质
硼酚
共振(粒子物理)
法诺平面
材料科学
光学
物理
光电子学
等离子体子
原子物理学
数学
各向异性
纯数学
作者
Yizhao Pan,Fang Chen,Yuchang Li,Chen Li,Yingying Gao,Wen‐Xing Yang
出处
期刊:Physica Scripta
[IOP Publishing]
日期:2024-07-31
卷期号:99 (8): 085560-085560
标识
DOI:10.1088/1402-4896/ad6645
摘要
Abstract In this paper, we propose a borophene-based double-dielectric-grating structure (BDDGS) to realize the Fano resonance electro-optical modulator and sensor. The Fano resonance originated from the coupling of two resonance modes excited by the upper borophene grating (UBG) and the lower borophene grating (LBG). The coupling mode theory (CMT) is utilized to fit the Fano transmission spectrum. The calculated result fits well with the simulated spectrum. We found the Fano resonance wavelengths exhibit a blue shift with increasing the carrier density of the borophene layer. Further, we utilize this property to achieve a Four-state Fano resonance electro-optical modulator. The working wavelengths of the ON-ON (11), ON–OFF (10), OFF–ON (01), and OFF-OFF (00) states are 1.321 μ m and 1.676 μ m , respectively. The asymmetric Fano spectra exhibit high sensing sensitivity S = 21 T Hz / R I U and figure of merit F O M = 3.9 R I U − 1 . Moreover, our proposed structure possesses a slow-fast light effect with the maximum group index are 57.84 and −332.3, respectively. Although several Fano resonance and electro-optical modulators based on two- dimensional (2D) material, like graphene, black phosphorus, and transition metal dichalcogenides (TMDs) are previously reported, this paper designed a borophene-based metamaterial to achieve Fano resonance electro-optical modulator and sensor, because borophene possesses a series of excellent physical and chemical properties, for example, mechanical compliance, high carrier mobility, and optical transparency. Therefore, the proposed borophene-based metamaterial will be beneficial in the fields of high-performance plasmonic sensors, slow light, and electro-optical modulators in the near future.
科研通智能强力驱动
Strongly Powered by AbleSci AI