在超宽带频率下高效地将欺骗性表面等离激元极化激元分裂到不同方向。

Splitting spoof surface plasmon polaritons to different directions with high efficiency in ultra-wideband frequencies.

作者信息

Wang Jun, Zhao Lei, Hao Zhang-Cheng, Shen Xiaopeng, Cui Tie Jun

出版信息

Opt Lett. 2019 Jul 1;44(13):3374-3377. doi: 10.1364/OL.44.003374.

DOI:10.1364/OL.44.003374

Abstract

An efficient method to split spoof surface plasmon polaritons (SSPPs) to different directions is proposed by designing a low-loss SSPP waveguide in an ultrawide frequency band. For this purpose, a coplanar-waveguide-based SSPP structure with double-row hole arrays etched on its middle line is first studied, which can be easily used to split the SSPP waves. Based on this method, a Y-shaped -3 dB SSPP power divider and its application on a Mach-Zehnder interferometer are presented. The experiment demonstrates that the proposed method splits the SSPP waves to different directions effectively in ultrawide frequencies (2.5-39.7 GHz) with good isolations, indicating that the proposed SSPP power divider can have good application on a Mach-Zehnder interferometer and plasmonic integrated circuits.

摘要

通过在超宽频带内设计一种低损耗表面等离激元极化激元（SSPP）波导，提出了一种将欺骗性表面等离激元极化激元（SSPPs）分裂到不同方向的有效方法。为此，首先研究了一种基于共面波导的SSPP结构，该结构在其中心线上蚀刻有双排孔阵列，可轻松用于分裂SSPP波。基于该方法，提出了一种Y形-3 dB SSPP功率分配器及其在马赫-曾德尔干涉仪上的应用。实验表明，所提出的方法在超宽频率（2.5-39.7 GHz）内能够有效地将SSPP波分裂到不同方向，且具有良好的隔离度，这表明所提出的SSPP功率分配器在马赫-曾德尔干涉仪和等离子体集成电路上具有良好的应用前景。