Curved terahertz surface plasmonic waveguide devices

Mingrui Yuan; Yongchang Lu; Ying Zhang; Ziying Zhang; Yanfeng Li; Hongchao Liu; Xixiang Zhang; Jiaguang Han; Weili Zhang

doi:10.1364/OE.385676

Curved terahertz surface plasmonic waveguide devices

Mingrui Yuan, Yongchang Lu, Ying Zhang, Ziying Zhang, Yanfeng Li, Hongchao Liu, Xixiang Zhang, Jiaguang Han, Weili Zhang

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Strongly confined surface waves can be achieved on periodically structured metal surfaces and are known as spoof surface plasmon polaritons (SPPs). In this work, several terahertz SPP devices based on curved waveguides are demonstrated. The transmittance and bending loss of 90-degree curved spoof SPP waveguides with a radius of curvature ranging from 200 to 2300 µm are investigated to identify the regime for high transmission. A commutator is designed and experimentally demonstrated. Furthermore, coupling equations are derived and verified for efficient coupling between bend-straight waveguides and between bend-bend waveguides. The results will be of great value for future integrated terahertz plasmonic systems.

Original language	English (US)
Pages (from-to)	1987
Journal	Optics Express
Volume	28
Issue number	2
DOIs	https://doi.org/10.1364/OE.385676
State	Published - Jan 4 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): OSR-2016-CRG5-2950
Acknowledgements: National Key Research and Development Program of China (2017YFA0701004); National Natural Science Foundation of China (61605143, 61722509, 61735012, 61871212, 61875150, 61935015); Tianjin Municipal Fund for Distinguished Young Scholars (18JCJQJC45600); King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) (OSR-2016-CRG5-2950).

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title = "Curved terahertz surface plasmonic waveguide devices",

abstract = "Strongly confined surface waves can be achieved on periodically structured metal surfaces and are known as spoof surface plasmon polaritons (SPPs). In this work, several terahertz SPP devices based on curved waveguides are demonstrated. The transmittance and bending loss of 90-degree curved spoof SPP waveguides with a radius of curvature ranging from 200 to 2300 µm are investigated to identify the regime for high transmission. A commutator is designed and experimentally demonstrated. Furthermore, coupling equations are derived and verified for efficient coupling between bend-straight waveguides and between bend-bend waveguides. The results will be of great value for future integrated terahertz plasmonic systems.",

author = "Mingrui Yuan and Yongchang Lu and Ying Zhang and Ziying Zhang and Yanfeng Li and Hongchao Liu and Xixiang Zhang and Jiaguang Han and Weili Zhang",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): OSR-2016-CRG5-2950 Acknowledgements: National Key Research and Development Program of China (2017YFA0701004); National Natural Science Foundation of China (61605143, 61722509, 61735012, 61871212, 61875150, 61935015); Tianjin Municipal Fund for Distinguished Young Scholars (18JCJQJC45600); King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) (OSR-2016-CRG5-2950).",

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doi = "10.1364/OE.385676",

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AU - Yuan, Mingrui

AU - Lu, Yongchang

AU - Zhang, Ying

AU - Zhang, Ziying

AU - Li, Yanfeng

AU - Liu, Hongchao

AU - Zhang, Xixiang

AU - Han, Jiaguang

AU - Zhang, Weili

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): OSR-2016-CRG5-2950 Acknowledgements: National Key Research and Development Program of China (2017YFA0701004); National Natural Science Foundation of China (61605143, 61722509, 61735012, 61871212, 61875150, 61935015); Tianjin Municipal Fund for Distinguished Young Scholars (18JCJQJC45600); King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) (OSR-2016-CRG5-2950).

PY - 2020/1/4

Y1 - 2020/1/4

N2 - Strongly confined surface waves can be achieved on periodically structured metal surfaces and are known as spoof surface plasmon polaritons (SPPs). In this work, several terahertz SPP devices based on curved waveguides are demonstrated. The transmittance and bending loss of 90-degree curved spoof SPP waveguides with a radius of curvature ranging from 200 to 2300 µm are investigated to identify the regime for high transmission. A commutator is designed and experimentally demonstrated. Furthermore, coupling equations are derived and verified for efficient coupling between bend-straight waveguides and between bend-bend waveguides. The results will be of great value for future integrated terahertz plasmonic systems.

AB - Strongly confined surface waves can be achieved on periodically structured metal surfaces and are known as spoof surface plasmon polaritons (SPPs). In this work, several terahertz SPP devices based on curved waveguides are demonstrated. The transmittance and bending loss of 90-degree curved spoof SPP waveguides with a radius of curvature ranging from 200 to 2300 µm are investigated to identify the regime for high transmission. A commutator is designed and experimentally demonstrated. Furthermore, coupling equations are derived and verified for efficient coupling between bend-straight waveguides and between bend-bend waveguides. The results will be of great value for future integrated terahertz plasmonic systems.

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U2 - 10.1364/OE.385676

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VL - 28

SP - 1987

JO - Optics Express

JF - Optics Express

IS - 2

ER -

Curved terahertz surface plasmonic waveguide devices

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