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


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
Issue number10
StatePublished - Sep 1 2019


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