Plasmonic Sensor Based on Multi Fano Resonance in Inverse T Shape Structure for Detection of CO<sub>2</sub> Concentration
An inverse T shape structure, consisting of two perpendicular cavities coupled with a bus-waveguide truncated by a block, has been proposed and investigated numerically. Multi Fano resonance, attributing to the interaction of one continuous and two discrete states, can be observed in transmission sp...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10272633/ |
| _version_ | 1797662181497503744 |
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| author | Lili Zeng Boxun Li Ruquan Wen Xingjiao Zhang |
| author_facet | Lili Zeng Boxun Li Ruquan Wen Xingjiao Zhang |
| author_sort | Lili Zeng |
| collection | DOAJ |
| description | An inverse T shape structure, consisting of two perpendicular cavities coupled with a bus-waveguide truncated by a block, has been proposed and investigated numerically. Multi Fano resonance, attributing to the interaction of one continuous and two discrete states, can be observed in transmission spectrum. The numerical results are demonstrated by the coupled mode theory. At the same time, it is feasible to produce multi Fano resonance which derive from the splitting of different order modes by adjusting <italic>D</italic> value, which has been well explained theoretically. When the inverse T shape is filled with Polyhexamethylene biguanide (PHMB), a perfect absorbing coating to monitor the CO<sub>2</sub> concentration, the structure can be served as a high sensitivity CO<sub>2</sub> detector, whose sensitivity can up to 303 pm/ppm. In addition, the sensitivity of this proposed structure is ∼2.23 times higher than the previous work. The proposed structure has the advantages of simple, compact and easy fabrication. The results represented in this study may have potential applications in sensing and CO<sub>2</sub> detector, which can provide the guideline to design other types of gas detector. |
| first_indexed | 2024-03-11T18:56:20Z |
| format | Article |
| id | doaj.art-4ef69133b1a34f4b9868682b794bfd89 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-03-11T18:56:20Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-4ef69133b1a34f4b9868682b794bfd892023-10-10T23:00:15ZengIEEEIEEE Photonics Journal1943-06552023-01-011551510.1109/JPHOT.2023.332213110272633Plasmonic Sensor Based on Multi Fano Resonance in Inverse T Shape Structure for Detection of CO<sub>2</sub> ConcentrationLili Zeng0https://orcid.org/0000-0002-7026-6723Boxun Li1https://orcid.org/0000-0001-6152-5634Ruquan Wen2https://orcid.org/0000-0002-2456-9045Xingjiao Zhang3https://orcid.org/0000-0002-4269-4296New Energy Institute, Hunan Vocational Institute of Technology, Xiangtan, ChinaSchool of Physics and Optoelectronics, Xiangtan University, Xiangtan, ChinaSchool of Mechatronics Engineering, Pingxiang University, Pingxiang, ChinaSchool of Mechatronics Engineering, Pingxiang University, Pingxiang, ChinaAn inverse T shape structure, consisting of two perpendicular cavities coupled with a bus-waveguide truncated by a block, has been proposed and investigated numerically. Multi Fano resonance, attributing to the interaction of one continuous and two discrete states, can be observed in transmission spectrum. The numerical results are demonstrated by the coupled mode theory. At the same time, it is feasible to produce multi Fano resonance which derive from the splitting of different order modes by adjusting <italic>D</italic> value, which has been well explained theoretically. When the inverse T shape is filled with Polyhexamethylene biguanide (PHMB), a perfect absorbing coating to monitor the CO<sub>2</sub> concentration, the structure can be served as a high sensitivity CO<sub>2</sub> detector, whose sensitivity can up to 303 pm/ppm. In addition, the sensitivity of this proposed structure is ∼2.23 times higher than the previous work. The proposed structure has the advantages of simple, compact and easy fabrication. The results represented in this study may have potential applications in sensing and CO<sub>2</sub> detector, which can provide the guideline to design other types of gas detector.https://ieeexplore.ieee.org/document/10272633/Detectorfano resonancePHMB |
| spellingShingle | Lili Zeng Boxun Li Ruquan Wen Xingjiao Zhang Plasmonic Sensor Based on Multi Fano Resonance in Inverse T Shape Structure for Detection of CO<sub>2</sub> Concentration IEEE Photonics Journal Detector fano resonance PHMB |
| title | Plasmonic Sensor Based on Multi Fano Resonance in Inverse T Shape Structure for Detection of CO<sub>2</sub> Concentration |
| title_full | Plasmonic Sensor Based on Multi Fano Resonance in Inverse T Shape Structure for Detection of CO<sub>2</sub> Concentration |
| title_fullStr | Plasmonic Sensor Based on Multi Fano Resonance in Inverse T Shape Structure for Detection of CO<sub>2</sub> Concentration |
| title_full_unstemmed | Plasmonic Sensor Based on Multi Fano Resonance in Inverse T Shape Structure for Detection of CO<sub>2</sub> Concentration |
| title_short | Plasmonic Sensor Based on Multi Fano Resonance in Inverse T Shape Structure for Detection of CO<sub>2</sub> Concentration |
| title_sort | plasmonic sensor based on multi fano resonance in inverse t shape structure for detection of co sub 2 sub concentration |
| topic | Detector fano resonance PHMB |
| url | https://ieeexplore.ieee.org/document/10272633/ |
| work_keys_str_mv | AT lilizeng plasmonicsensorbasedonmultifanoresonanceininversetshapestructurefordetectionofcosub2subconcentration AT boxunli plasmonicsensorbasedonmultifanoresonanceininversetshapestructurefordetectionofcosub2subconcentration AT ruquanwen plasmonicsensorbasedonmultifanoresonanceininversetshapestructurefordetectionofcosub2subconcentration AT xingjiaozhang plasmonicsensorbasedonmultifanoresonanceininversetshapestructurefordetectionofcosub2subconcentration |