We study the defect-guided modes supported by a set of metallic rods structured at the subwavelength scale. Following the idea of photonic crystal waveguide, we show that spoof plasmon surface waves can be manipulated at subwavelength scale. We demonstrate that these waves can propagate without leakage along a row of rods having a different length than the surrounding medium and we provide the corresponding dispersion relation. The principle of this subwavelength colored guide is validated experimentally. This allows us to propose the design of a wavelength demultiplexer whose efficiency is illustrated in the microwave regime.

中文翻译：

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通过利用缺陷导向的欺骗等离激元模子在亚波长尺度上操纵光

我们研究了由在亚波长尺度下构造的一组金属棒所支持的缺陷引导模式。遵循光子晶体波导的想法，我们证明了可以在亚波长范围内操纵欺骗的等离激元表面波。我们证明了这些波可以沿着长度与周围介质不同的一排杆传播而不会泄漏，并且我们提供了相应的色散关系。该亚波长彩色指南的原理已通过实验验证。这使我们能够提出一种波长解复用器的设计，其效率在微波状态下得到了说明。