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...

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Main Authors: Gao, Zhen, Gao, Fei, Zhang, Youming, Xu, Hongyi, Luo, Yu, Zhang, Baile
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/141590
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.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
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Backward Waves
Designer Surface Plasmons
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
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.
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
format Article
author Gao, Zhen
Gao, Fei
Zhang, Youming
Xu, Hongyi
Luo, Yu
Zhang, Baile
author_sort Gao, Zhen
title 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_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_sort forward/backward switching of plasmonic wave propagation using sign-reversal coupling
publishDate 2020
url https://hdl.handle.net/10356/141590
_version_ 1759854652021538816