Study on Sensing Performance of MDM Waveguide Coupled with the Square Cavity Containing a Rectangular Groove
In order to realize tunable multichannel high sensitivity refractive index sensing, a square resonator connected with a Rectangular Groove (RG) is proposed to couple with the highly compact Metal-Dielectric-Metal (MDM) waveguide containing double metal baffles. The transmission spectrums of the prop...
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| Format: | Article |
| Language: | zho |
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《光通信研究》编辑部
2022-08-01
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| Series: | Guangtongxin yanjiu |
| Subjects: | |
| Online Access: | http://www.gtxyj.com.cn/thesisDetails#10.13756/j.gtxyj.2022.04.008 |
| _version_ | 1827258864032022528 |
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| author | WANG Cai-yun GUAN Jian-fei |
| author_facet | WANG Cai-yun GUAN Jian-fei |
| author_sort | WANG Cai-yun |
| collection | DOAJ |
| description | In order to realize tunable multichannel high sensitivity refractive index sensing, a square resonator connected with a Rectangular Groove (RG) is proposed to couple with the highly compact Metal-Dielectric-Metal (MDM) waveguide containing double metal baffles. The transmission spectrums of the proposed waveguide structure have been calculated by the finite element method, which exhibits four sharp, asymmetric transmittance peaks and the magnetic field patterns. Based on the coupling interference between the broadband reflection mode generated by the double baffles and the narrow resonance modes occurred in the composite cavity, the generation mechanism of quadruple Fano resonance is explained. Moreover, the structural parameters of the square cavity and the rectangular groove are changed to study the tunability of the wavelengths of the quadruple transmittance peaks. When the composite cavity is filled with different dielectric media, the calculated sensitivity corresponding to four transmittance peaks are 960, 1 120, 1 320 and 1 560 nm/RIU, respectively. It provides an effective theoretical reference for the design of multi-channel and high sensitivity refractive index sensor. |
| first_indexed | 2024-04-10T19:12:52Z |
| format | Article |
| id | doaj.art-065f0ec3df54451eab356b651c2e50d8 |
| institution | Directory Open Access Journal |
| issn | 1005-8788 |
| language | zho |
| last_indexed | 2025-03-22T02:17:28Z |
| publishDate | 2022-08-01 |
| publisher | 《光通信研究》编辑部 |
| record_format | Article |
| series | Guangtongxin yanjiu |
| spelling | doaj.art-065f0ec3df54451eab356b651c2e50d82024-05-06T09:50:55Zzho《光通信研究》编辑部Guangtongxin yanjiu1005-87882022-08-01364128954094Study on Sensing Performance of MDM Waveguide Coupled with the Square Cavity Containing a Rectangular GrooveWANG Cai-yunGUAN Jian-feiIn order to realize tunable multichannel high sensitivity refractive index sensing, a square resonator connected with a Rectangular Groove (RG) is proposed to couple with the highly compact Metal-Dielectric-Metal (MDM) waveguide containing double metal baffles. The transmission spectrums of the proposed waveguide structure have been calculated by the finite element method, which exhibits four sharp, asymmetric transmittance peaks and the magnetic field patterns. Based on the coupling interference between the broadband reflection mode generated by the double baffles and the narrow resonance modes occurred in the composite cavity, the generation mechanism of quadruple Fano resonance is explained. Moreover, the structural parameters of the square cavity and the rectangular groove are changed to study the tunability of the wavelengths of the quadruple transmittance peaks. When the composite cavity is filled with different dielectric media, the calculated sensitivity corresponding to four transmittance peaks are 960, 1 120, 1 320 and 1 560 nm/RIU, respectively. It provides an effective theoretical reference for the design of multi-channel and high sensitivity refractive index sensor.http://www.gtxyj.com.cn/thesisDetails#10.13756/j.gtxyj.2022.04.008surface plasmon polaritons;MDM waveguide;square shaped resonator;Fano resonance |
| spellingShingle | WANG Cai-yun GUAN Jian-fei Study on Sensing Performance of MDM Waveguide Coupled with the Square Cavity Containing a Rectangular Groove Guangtongxin yanjiu surface plasmon polaritons;MDM waveguide;square shaped resonator;Fano resonance |
| title | Study on Sensing Performance of MDM Waveguide Coupled with the Square Cavity Containing a Rectangular Groove |
| title_full | Study on Sensing Performance of MDM Waveguide Coupled with the Square Cavity Containing a Rectangular Groove |
| title_fullStr | Study on Sensing Performance of MDM Waveguide Coupled with the Square Cavity Containing a Rectangular Groove |
| title_full_unstemmed | Study on Sensing Performance of MDM Waveguide Coupled with the Square Cavity Containing a Rectangular Groove |
| title_short | Study on Sensing Performance of MDM Waveguide Coupled with the Square Cavity Containing a Rectangular Groove |
| title_sort | study on sensing performance of mdm waveguide coupled with the square cavity containing a rectangular groove |
| topic | surface plasmon polaritons;MDM waveguide;square shaped resonator;Fano resonance |
| url | http://www.gtxyj.com.cn/thesisDetails#10.13756/j.gtxyj.2022.04.008 |
| work_keys_str_mv | AT wangcaiyun studyonsensingperformanceofmdmwaveguidecoupledwiththesquarecavitycontainingarectangulargroove AT guanjianfei studyonsensingperformanceofmdmwaveguidecoupledwiththesquarecavitycontainingarectangulargroove |