Sensing characteristics based on Fano resonance in rectangular ring waveguide

2015 ◽  
Vol 356 ◽  
pp. 373-377 ◽  
Author(s):  
Zhiquan Chen ◽  
Hongjian Li ◽  
Shiping Zhan ◽  
Zhihui He ◽  
Boxun Li ◽  
...  
Micromachines ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1359
Author(s):  
Yaxin Yu ◽  
Jiangong Cui ◽  
Guochang Liu ◽  
Rongyu Zhao ◽  
Min Zhu ◽  
...  

To reduce the loss of the metal–insulator–metal waveguide structure in the near-infrared region, a plasmonic nanosensor structure based on a racetrack resonant cavity is proposed herein. Through finite element simulation, the transmission spectra of the sensor under different size parameters were analyzed, and its influence on the sensing characteristics of the system was examined. The analysis results show that the structure can excite the double Fano resonance, which has a distinctive dependence on the size parameters of the sensor. The position and line shape of the resonance peak can be adjusted by changing the key parameters. In addition, the sensor has a higher sensitivity, which can reach 1503.7 nm/RIU when being used in refractive index sensing; the figure of merit is 26.8, and it can reach 0.75 nm/°C when it is used in temperature sensing. This structure can be used in optical integrated circuits, especially high-sensitivity nanosensors.


2019 ◽  
Vol 46 (2) ◽  
pp. 0213001 ◽  
Author(s):  
陈颖 Chen Ying ◽  
曹景刚 Cao Jinggang ◽  
许扬眉 Xu Yangmei ◽  
高新贝 Gao Xinbei ◽  
谢进朝 Xie Jinchao ◽  
...  

OSA Continuum ◽  
2020 ◽  
Vol 3 (2) ◽  
pp. 153
Author(s):  
Yaping Zhao ◽  
Guanmao Zhang ◽  
Panpan Ren ◽  
Zhihao Guo

2021 ◽  
Vol 482 ◽  
pp. 126563
Author(s):  
Jianfeng Chen ◽  
Jina Li ◽  
Xing Liu ◽  
Siti Rohimah ◽  
He Tian ◽  
...  

2019 ◽  
Vol 46 (1) ◽  
pp. 0113001
Author(s):  
陈颖 Chen Ying ◽  
许扬眉 Xu Yangmei ◽  
高新贝 Gao Xinbei ◽  
曹景刚 Cao Jinggang ◽  
谢进朝 Xie Jinchao ◽  
...  

2020 ◽  
pp. 2150065
Author(s):  
Ying Chen ◽  
Jinggang Cao ◽  
Yangmei Xu ◽  
Xinbei Gao ◽  
Jinchao Xie

A metal-dielectric-metal (MDM) waveguide coupled disk cavity structure with bimetallic baffle is proposed, which bases on the transmission characteristics of surface plasmon polaritons (SPPs) in subwavelength structure, and the absorption material InGaAsP is filled in the Fabry–Perot (F-P) cavity and disk cavity. The Fano resonance is an asymmetric spectral line formed by the destructive interference between the wide continuous state generated by the F-P resonator and the narrow discrete state interference generated by the disk cavity. Based on the coupled mode theory, the formation mechanism of the Fano resonance of the structure is qualitatively analyzed. The structure was simulated by finite element method to quantitatively analyze the influence of structural parameters and absorption material InGaAsP on the refractive index sensing characteristics. The proposed sensor yields sensitivity higher than 1360 nm/refractive index unit (RIU) and a figure of merit of [Formula: see text] by optimizing the geometry parameters and filling the absorption material InGaAsP. This structure has potential applications for high integration of nanosensors, slow-light devices, and nano-optical switches.


Author(s):  
Zilvinas Kancleris ◽  
Gediminas Slekas ◽  
Andrius Kamarauskas ◽  
Dalius Seliuta
Keyword(s):  

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