Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity
Due to their compact size and high sensitivity, plasmonic sensors have become a hot topic in the sensing field. A nanosensor structure, comprising the metal–insulator–metal (MIM) waveguide with a stub and a horizontal B-Type cavity, is designed as a refractive index sensor. The spectral characterist...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/8/4/125 |
| _version_ | 1827694985775939584 |
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| author | Shubin Yan Haoran Shi Xiaoyu Yang Jing Guo Wenchang Wu Ertian Hua |
| author_facet | Shubin Yan Haoran Shi Xiaoyu Yang Jing Guo Wenchang Wu Ertian Hua |
| author_sort | Shubin Yan |
| collection | DOAJ |
| description | Due to their compact size and high sensitivity, plasmonic sensors have become a hot topic in the sensing field. A nanosensor structure, comprising the metal–insulator–metal (MIM) waveguide with a stub and a horizontal B-Type cavity, is designed as a refractive index sensor. The spectral characteristics of proposed structure are analyzed via the finite element method (FEM). The results show that there is a sharp Fano resonance profile, which is excited by a coupling between the MIM waveguide and the horizontal B-Type cavity. The normalized H<sub>Z</sub> field is affected by the difference value between the outer radii <i>R</i><sub>1</sub> and <i>R</i><sub>2</sub> of the semi-circle of the horizontal B-Type cavity greatly. The influence of every element of the whole system on sensing properties is discussed in depth. The sensitivity of the proposed structure can obtain 1548 nm/RIU (refractive index unit) with a figure of merit of 59. The proposed structure has potential in nanophotonic sensing applications. |
| first_indexed | 2024-03-10T12:17:15Z |
| format | Article |
| id | doaj.art-54f8406667bd46bc897c50db2326342e |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T12:17:15Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-54f8406667bd46bc897c50db2326342e2023-11-21T15:47:15ZengMDPI AGPhotonics2304-67322021-04-018412510.3390/photonics8040125Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type CavityShubin Yan0Haoran Shi1Xiaoyu Yang2Jing Guo3Wenchang Wu4Ertian Hua5School of Electronical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310058, ChinaSchool of Electronical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310058, ChinaSchool of Electronical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310058, ChinaSchool of Electronical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310058, ChinaSchool of Electron and Information Engineering, Ningbo University of Technology, Ningbo 310058, ChinaSchool of Electronical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310058, ChinaDue to their compact size and high sensitivity, plasmonic sensors have become a hot topic in the sensing field. A nanosensor structure, comprising the metal–insulator–metal (MIM) waveguide with a stub and a horizontal B-Type cavity, is designed as a refractive index sensor. The spectral characteristics of proposed structure are analyzed via the finite element method (FEM). The results show that there is a sharp Fano resonance profile, which is excited by a coupling between the MIM waveguide and the horizontal B-Type cavity. The normalized H<sub>Z</sub> field is affected by the difference value between the outer radii <i>R</i><sub>1</sub> and <i>R</i><sub>2</sub> of the semi-circle of the horizontal B-Type cavity greatly. The influence of every element of the whole system on sensing properties is discussed in depth. The sensitivity of the proposed structure can obtain 1548 nm/RIU (refractive index unit) with a figure of merit of 59. The proposed structure has potential in nanophotonic sensing applications.https://www.mdpi.com/2304-6732/8/4/125MIMhorizontal B-Type cavityFano resonancenanosensor |
| spellingShingle | Shubin Yan Haoran Shi Xiaoyu Yang Jing Guo Wenchang Wu Ertian Hua Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity Photonics MIM horizontal B-Type cavity Fano resonance nanosensor |
| title | Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity |
| title_full | Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity |
| title_fullStr | Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity |
| title_full_unstemmed | Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity |
| title_short | Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity |
| title_sort | study on the nanosensor based on a mim waveguide with a stub coupled with a horizontal b type cavity |
| topic | MIM horizontal B-Type cavity Fano resonance nanosensor |
| url | https://www.mdpi.com/2304-6732/8/4/125 |
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