Tunable Triple Plasmonically Induced Transparency in Triangular Cavities Coupled with an MDM Waveguide
In this paper, a side-coupled triangle cavity in a plasmonic waveguide structure is proposed and numerically analyzed by the finite-difference time-domain (FDTD) method and coupled mode theory (CMT). Triple plasmonically induced transparency (PIT) was achieved when an extra triangle was added into t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/2/100 |
| _version_ | 1797477151960727552 |
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| author | Jingyu Zhang Hengli Feng Chang Liu Dongchao Fang Jincheng Wang Lehui Wang Zuoxin Zhang Lingling Ran Yang Gao |
| author_facet | Jingyu Zhang Hengli Feng Chang Liu Dongchao Fang Jincheng Wang Lehui Wang Zuoxin Zhang Lingling Ran Yang Gao |
| author_sort | Jingyu Zhang |
| collection | DOAJ |
| description | In this paper, a side-coupled triangle cavity in a plasmonic waveguide structure is proposed and numerically analyzed by the finite-difference time-domain (FDTD) method and coupled mode theory (CMT). Triple plasmonically induced transparency (PIT) was achieved when an extra triangle was added into the structure, and the transmission characteristics were investigated. This novel structure has a maximal sensitivity of 933 nm/RIU when used as a sensor and a contrast ratio of 4 dB. Moreover, the tunability of PIT can be realized by filling the nematic liquid crystal (NLC) E7 into the triangles. The refractive index of E7 changes with the applied electric field. Given that E7 is also sensitive to temperature, this structure can be used as a temperature sensor with a sensitivity of 0.29 nm/°C. It is believed that this tunable structure with PIT may have potential applications in highly integrated optical circuits. |
| first_indexed | 2024-03-09T21:13:33Z |
| format | Article |
| id | doaj.art-f709b2f86fc54b2582c0c9247bf7e638 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T21:13:33Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-f709b2f86fc54b2582c0c9247bf7e6382023-11-23T21:41:29ZengMDPI AGPhotonics2304-67322022-02-019210010.3390/photonics9020100Tunable Triple Plasmonically Induced Transparency in Triangular Cavities Coupled with an MDM WaveguideJingyu Zhang0Hengli Feng1Chang Liu2Dongchao Fang3Jincheng Wang4Lehui Wang5Zuoxin Zhang6Lingling Ran7Yang Gao8School of Electronic Engineering, Heilongjiang University, Harbin 150080, ChinaSchool of Electronic Engineering, Heilongjiang University, Harbin 150080, ChinaSchool of Electronic Engineering, Heilongjiang University, Harbin 150080, ChinaSchool of Electronic Engineering, Heilongjiang University, Harbin 150080, ChinaSchool of Electronic Engineering, Heilongjiang University, Harbin 150080, ChinaSchool of Electronic Engineering, Heilongjiang University, Harbin 150080, ChinaSchool of Electronic Engineering, Heilongjiang University, Harbin 150080, ChinaSchool of Electronic Engineering, Heilongjiang University, Harbin 150080, ChinaSchool of Electronic Engineering, Heilongjiang University, Harbin 150080, ChinaIn this paper, a side-coupled triangle cavity in a plasmonic waveguide structure is proposed and numerically analyzed by the finite-difference time-domain (FDTD) method and coupled mode theory (CMT). Triple plasmonically induced transparency (PIT) was achieved when an extra triangle was added into the structure, and the transmission characteristics were investigated. This novel structure has a maximal sensitivity of 933 nm/RIU when used as a sensor and a contrast ratio of 4 dB. Moreover, the tunability of PIT can be realized by filling the nematic liquid crystal (NLC) E7 into the triangles. The refractive index of E7 changes with the applied electric field. Given that E7 is also sensitive to temperature, this structure can be used as a temperature sensor with a sensitivity of 0.29 nm/°C. It is believed that this tunable structure with PIT may have potential applications in highly integrated optical circuits.https://www.mdpi.com/2304-6732/9/2/100SPPswaveguidePITliquid crystal |
| spellingShingle | Jingyu Zhang Hengli Feng Chang Liu Dongchao Fang Jincheng Wang Lehui Wang Zuoxin Zhang Lingling Ran Yang Gao Tunable Triple Plasmonically Induced Transparency in Triangular Cavities Coupled with an MDM Waveguide Photonics SPPs waveguide PIT liquid crystal |
| title | Tunable Triple Plasmonically Induced Transparency in Triangular Cavities Coupled with an MDM Waveguide |
| title_full | Tunable Triple Plasmonically Induced Transparency in Triangular Cavities Coupled with an MDM Waveguide |
| title_fullStr | Tunable Triple Plasmonically Induced Transparency in Triangular Cavities Coupled with an MDM Waveguide |
| title_full_unstemmed | Tunable Triple Plasmonically Induced Transparency in Triangular Cavities Coupled with an MDM Waveguide |
| title_short | Tunable Triple Plasmonically Induced Transparency in Triangular Cavities Coupled with an MDM Waveguide |
| title_sort | tunable triple plasmonically induced transparency in triangular cavities coupled with an mdm waveguide |
| topic | SPPs waveguide PIT liquid crystal |
| url | https://www.mdpi.com/2304-6732/9/2/100 |
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