High-performance and compact broadband terahertz plasmonic waveguide intersection

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

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

For terahertz (THz) integrated systems, an intersection between waveguides is inevitable and is often accompanied by considerable crosstalk and loss. Here, we propose and experimentally demonstrate a novel type of crossing with a footprint less than 0.2 × 0.2 mm2 for THz surface plasmon polariton waveguiding. With an optimized crossover structure, the measured loss of the intersection is as low as 0.89 dB/crossing, and the crosstalk is less than-19.06 dB/crossing at 0.55 THz. The proposed crossing structure is compact and has low loss and crosstalk within a broad band, which will pave the way for a wide range of new applications for THz integrated systems.
Original languageEnglish (US)
Pages (from-to)1811-1819
Number of pages9
JournalNanophotonics
Volume8
Issue number10
DOIs
StatePublished - Sep 1 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): CRF-2016-2950-CRG5
Acknowledgements: The research reported in this publication was supported by the National Key Research and Development Program of China (grant no. 2017YFA0701004), the National Science Foundation of China (grant nos. 61875150, 61605143, 61735012, 61420106006, 61722509, and 61871212), the Tianjin Municipal Fund for Distinguished Young Scholars (grant no. 18JCJQJC45600), and King Abdullah University of Science and Technology (KAUST: CRF-2016-2950-CRG5).

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