Forward/backward switching of plasmonic wave propagation using sign-reversal coupling
Backward waves with wave‐front propagation opposite in direction to that of energy flow have attracted considerable interest in the context of photonic metamaterials. However, switching between forward and backward waves in the same frequency range has remained a challenge. Here, on a platform of co...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/141590 |
| _version_ | 1811683863418634240 |
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| author | Gao, Zhen Gao, Fei Zhang, Youming Xu, Hongyi Luo, Yu Zhang, Baile |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Gao, Zhen Gao, Fei Zhang, Youming Xu, Hongyi Luo, Yu Zhang, Baile |
| author_sort | Gao, Zhen |
| collection | NTU |
| description | Backward waves with wave‐front propagation opposite in direction to that of energy flow have attracted considerable interest in the context of photonic metamaterials. However, switching between forward and backward waves in the same frequency range has remained a challenge. Here, on a platform of coupled designer surface plasmon resonators in the microwave regime, multiband forward/backward switching of plasmonic wave propagation is demonstrated. This approach makes use of sign‐reversal coupling that occurs when switching the coupling configuration between tightly confined photonic modes. Direct experimental measurements of plasmon dispersion curves confirm the forward/backward propagation of plasmonic waves in the same frequency range. This study provides a solution to forward/backward switching of subwavelength plasmonic wave propagation, and may find potential applications in photonic integrated systems. |
| first_indexed | 2024-10-01T04:19:29Z |
| format | Journal Article |
| id | ntu-10356/141590 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:19:29Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1415902023-02-28T19:24:47Z Forward/backward switching of plasmonic wave propagation using sign-reversal coupling Gao, Zhen Gao, Fei Zhang, Youming Xu, Hongyi Luo, Yu Zhang, Baile School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies Engineering::Electrical and electronic engineering Backward Waves Designer Surface Plasmons Backward waves with wave‐front propagation opposite in direction to that of energy flow have attracted considerable interest in the context of photonic metamaterials. However, switching between forward and backward waves in the same frequency range has remained a challenge. Here, on a platform of coupled designer surface plasmon resonators in the microwave regime, multiband forward/backward switching of plasmonic wave propagation is demonstrated. This approach makes use of sign‐reversal coupling that occurs when switching the coupling configuration between tightly confined photonic modes. Direct experimental measurements of plasmon dispersion curves confirm the forward/backward propagation of plasmonic waves in the same frequency range. This study provides a solution to forward/backward switching of subwavelength plasmonic wave propagation, and may find potential applications in photonic integrated systems. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Accepted version 2020-06-09T06:28:11Z 2020-06-09T06:28:11Z 2017 Journal Article Gao, Z., Gao, F., Zhang, Y., Xu, H., Luo, Y., & Zhang, B. (2017). Forward/backward switching of plasmonic wave propagation using sign-reversal coupling. Advanced Materials, 29(26), 1700018-. doi:10.1002/adma.201700018 0935-9648 https://hdl.handle.net/10356/141590 10.1002/adma.201700018 28464456 2-s2.0-85018987201 26 29 en Advanced Materials This is the accepted version of the following article: Gao, Z., Gao, F., Zhang, Y., Xu, H., Luo, Y., & Zhang, B. (2017). Forward/backward switching of plasmonic wave propagation using sign-reversal coupling. Advanced Materials, 29(26), 1700018-, which has been published in final form at https://doi.org/10.1002/adma.201700018. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html]. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Backward Waves Designer Surface Plasmons Gao, Zhen Gao, Fei Zhang, Youming Xu, Hongyi Luo, Yu Zhang, Baile Forward/backward switching of plasmonic wave propagation using sign-reversal coupling |
| title | Forward/backward switching of plasmonic wave propagation using sign-reversal coupling |
| title_full | Forward/backward switching of plasmonic wave propagation using sign-reversal coupling |
| title_fullStr | Forward/backward switching of plasmonic wave propagation using sign-reversal coupling |
| title_full_unstemmed | Forward/backward switching of plasmonic wave propagation using sign-reversal coupling |
| title_short | Forward/backward switching of plasmonic wave propagation using sign-reversal coupling |
| title_sort | forward backward switching of plasmonic wave propagation using sign reversal coupling |
| topic | Engineering::Electrical and electronic engineering Backward Waves Designer Surface Plasmons |
| url | https://hdl.handle.net/10356/141590 |
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