Characterization of Plasmonic Modes in a Low-Loss Dielectric-Coated Hollow Core Rectangular Waveguide at Terahertz Frequency
In this paper, a low-loss hollow-core rectangular plasmonic waveguide with a dielectric coating of Teflon is analyzed for terahertz (2.5 THz) propagation using a full-vectorial finite-element method (FEM). The modal properties of the waveguide, their effective indices, and power confinements have be...
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| Format: | Article |
| Language: | English |
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IEEE
2011-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/6059468/ |
| _version_ | 1818457912081645568 |
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| author | B. M. A. Rahman Anita Quadir Huda Tanvir K. T. V. Grattan |
| author_facet | B. M. A. Rahman Anita Quadir Huda Tanvir K. T. V. Grattan |
| author_sort | B. M. A. Rahman |
| collection | DOAJ |
| description | In this paper, a low-loss hollow-core rectangular plasmonic waveguide with a dielectric coating of Teflon is analyzed for terahertz (2.5 THz) propagation using a full-vectorial finite-element method (FEM). The modal properties of the waveguide, their effective indices, and power confinements have been calculated with a particular emphasis on the loss characteristics of the different modes. It has been observed that the loss characteristics of the guide are greatly affected by the thickness of the dielectric coating. It has been identified that, in contrast to the fundamental <i>H</i><sub>10</sub><sup>x</sup> mode, the <i>H</i><sub>12</sub><sup>x</sup> mode shows interesting modal properties and offers the lowest possible loss for the structure. This mode also tends to yield a near-Gaussian field profile when the dielectric coating thickness is optimized. The optimization of the loss values has been evaluated by comparing the loss characteristics for different dielectric materials, as well as by using different metal claddings. |
| first_indexed | 2024-12-14T22:50:06Z |
| format | Article |
| id | doaj.art-977a60f50a904d1aa29ac60e4d08cc8c |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-14T22:50:06Z |
| publishDate | 2011-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-977a60f50a904d1aa29ac60e4d08cc8c2022-12-21T22:44:45ZengIEEEIEEE Photonics Journal1943-06552011-01-01361054106610.1109/JPHOT.2011.21733266059468Characterization of Plasmonic Modes in a Low-Loss Dielectric-Coated Hollow Core Rectangular Waveguide at Terahertz FrequencyB. M. A. Rahman0Anita Quadir1Huda Tanvir2K. T. V. Grattan3School of Engineering and Mathematical Sciences, City University London, Northampton Square, EC1V 0HB London , U.K.School of Engineering and Mathematical Sciences, City University London, Northampton Square, EC1V 0HB London , U.K.School of Engineering and Mathematical Sciences, City University London, Northampton Square, EC1V 0HB London , U.K.School of Engineering and Mathematical Sciences, City University London, Northampton Square, EC1V 0HB London , U.K.In this paper, a low-loss hollow-core rectangular plasmonic waveguide with a dielectric coating of Teflon is analyzed for terahertz (2.5 THz) propagation using a full-vectorial finite-element method (FEM). The modal properties of the waveguide, their effective indices, and power confinements have been calculated with a particular emphasis on the loss characteristics of the different modes. It has been observed that the loss characteristics of the guide are greatly affected by the thickness of the dielectric coating. It has been identified that, in contrast to the fundamental <i>H</i><sub>10</sub><sup>x</sup> mode, the <i>H</i><sub>12</sub><sup>x</sup> mode shows interesting modal properties and offers the lowest possible loss for the structure. This mode also tends to yield a near-Gaussian field profile when the dielectric coating thickness is optimized. The optimization of the loss values has been evaluated by comparing the loss characteristics for different dielectric materials, as well as by using different metal claddings.https://ieeexplore.ieee.org/document/6059468/Finite-element method (FEM)metal-clad dielectric-coated rectangular waveguidesmodal solutionssurface plasmon modes (SPMs)terahertz (THz) waveguides |
| spellingShingle | B. M. A. Rahman Anita Quadir Huda Tanvir K. T. V. Grattan Characterization of Plasmonic Modes in a Low-Loss Dielectric-Coated Hollow Core Rectangular Waveguide at Terahertz Frequency IEEE Photonics Journal Finite-element method (FEM) metal-clad dielectric-coated rectangular waveguides modal solutions surface plasmon modes (SPMs) terahertz (THz) waveguides |
| title | Characterization of Plasmonic Modes in a Low-Loss Dielectric-Coated Hollow Core Rectangular Waveguide at Terahertz Frequency |
| title_full | Characterization of Plasmonic Modes in a Low-Loss Dielectric-Coated Hollow Core Rectangular Waveguide at Terahertz Frequency |
| title_fullStr | Characterization of Plasmonic Modes in a Low-Loss Dielectric-Coated Hollow Core Rectangular Waveguide at Terahertz Frequency |
| title_full_unstemmed | Characterization of Plasmonic Modes in a Low-Loss Dielectric-Coated Hollow Core Rectangular Waveguide at Terahertz Frequency |
| title_short | Characterization of Plasmonic Modes in a Low-Loss Dielectric-Coated Hollow Core Rectangular Waveguide at Terahertz Frequency |
| title_sort | characterization of plasmonic modes in a low loss dielectric coated hollow core rectangular waveguide at terahertz frequency |
| topic | Finite-element method (FEM) metal-clad dielectric-coated rectangular waveguides modal solutions surface plasmon modes (SPMs) terahertz (THz) waveguides |
| url | https://ieeexplore.ieee.org/document/6059468/ |
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