Planar Plasmonic Terahertz Waveguide Based Upon One Dimensional Array of Pyramidal Corrugations and Refractive Index Sensing
We examine the refractive index sensor ability of the terahertz surface plasmon modes supported by a planar plasmonic terahertz (THz) waveguide. The waveguide is comprised of one-dimensional array of periodically arranged subwavelength scale pyramidal corrugations resulting in a plasmonic metamateri...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9242234/ |
| _version_ | 1818434722979643392 |
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| author | K.M. Dhriti Maurya Amir Ahmad Gagan Kumar |
| author_facet | K.M. Dhriti Maurya Amir Ahmad Gagan Kumar |
| author_sort | K.M. Dhriti Maurya |
| collection | DOAJ |
| description | We examine the refractive index sensor ability of the terahertz surface plasmon modes supported by a planar plasmonic terahertz (THz) waveguide. The waveguide is comprised of one-dimensional array of periodically arranged subwavelength scale pyramidal corrugations resulting in a plasmonic metamaterials waveguide. The waveguide exhibits strong field confinement along with the corrugated pattern. We have analyzed the dispersion property and quality factor of the fundamental as well as higher-order modes of the waveguide. In order to examine sensor capability, we used analytes of different refractive indices and observed a corresponding frequency shift. We further analyze the sensitivity of all the modes for the given volume of analyte and compare their sensing performance. We have employed the semi-analytical model to understand the numerical observations. The proposed waveguide approach can potentially result in highly sensitive refractive index sensors at terahertz frequencies. |
| first_indexed | 2024-12-14T16:41:31Z |
| format | Article |
| id | doaj.art-9b942e94c44c484f85ecb6ee847eaac5 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-14T16:41:31Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-9b942e94c44c484f85ecb6ee847eaac52022-12-21T22:54:19ZengIEEEIEEE Photonics Journal1943-06552020-01-0112611010.1109/JPHOT.2020.30345499242234Planar Plasmonic Terahertz Waveguide Based Upon One Dimensional Array of Pyramidal Corrugations and Refractive Index SensingK.M. Dhriti Maurya0https://orcid.org/0000-0002-9062-8170Amir Ahmad1Gagan Kumar2https://orcid.org/0000-0001-5867-0670Indian Institute of Technology Guwahati, Department of Physics, Guwahati, IndiaCollege of Information Technology, United Arab Emirates University, Al Ain, UAEIndian Institute of Technology Guwahati, Department of Physics, Guwahati, IndiaWe examine the refractive index sensor ability of the terahertz surface plasmon modes supported by a planar plasmonic terahertz (THz) waveguide. The waveguide is comprised of one-dimensional array of periodically arranged subwavelength scale pyramidal corrugations resulting in a plasmonic metamaterials waveguide. The waveguide exhibits strong field confinement along with the corrugated pattern. We have analyzed the dispersion property and quality factor of the fundamental as well as higher-order modes of the waveguide. In order to examine sensor capability, we used analytes of different refractive indices and observed a corresponding frequency shift. We further analyze the sensitivity of all the modes for the given volume of analyte and compare their sensing performance. We have employed the semi-analytical model to understand the numerical observations. The proposed waveguide approach can potentially result in highly sensitive refractive index sensors at terahertz frequencies.https://ieeexplore.ieee.org/document/9242234/Plasmonicsensingterahertzwaveguide |
| spellingShingle | K.M. Dhriti Maurya Amir Ahmad Gagan Kumar Planar Plasmonic Terahertz Waveguide Based Upon One Dimensional Array of Pyramidal Corrugations and Refractive Index Sensing IEEE Photonics Journal Plasmonic sensing terahertz waveguide |
| title | Planar Plasmonic Terahertz Waveguide Based Upon One Dimensional Array of Pyramidal Corrugations and Refractive Index Sensing |
| title_full | Planar Plasmonic Terahertz Waveguide Based Upon One Dimensional Array of Pyramidal Corrugations and Refractive Index Sensing |
| title_fullStr | Planar Plasmonic Terahertz Waveguide Based Upon One Dimensional Array of Pyramidal Corrugations and Refractive Index Sensing |
| title_full_unstemmed | Planar Plasmonic Terahertz Waveguide Based Upon One Dimensional Array of Pyramidal Corrugations and Refractive Index Sensing |
| title_short | Planar Plasmonic Terahertz Waveguide Based Upon One Dimensional Array of Pyramidal Corrugations and Refractive Index Sensing |
| title_sort | planar plasmonic terahertz waveguide based upon one dimensional array of pyramidal corrugations and refractive index sensing |
| topic | Plasmonic sensing terahertz waveguide |
| url | https://ieeexplore.ieee.org/document/9242234/ |
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