Multiplexed gratings can provide multiple independent resonance modes for control of light–matter interactions. Here, we propose a method to digitally multiplexing rectangular metal gratings that can be fabricated with planar processing technologies, and adaptable to various structure and material systems. As different logic operators (OR, AND, XOR) may be applied in the multiplexation, we investigate their influences on plasmonic resonance properties of as–multiplexed metallic gratings, as well as dependences of their performances on structure features of the constitutive gratings. It’s concluded that, generally, the OR–operation on constitutive rectangular metal gratings with a medium ratio of ridge–width to period generates optimal multiplexed gratings that have excellent plasmonic resonance figures and are less critical for fabrication. The proposed structures may be applied in developing sensors and optoelectronic devices for improved performances or novel functions.

中文翻译：

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多个独立谐振模式的矩形光栅的数字复用

多路光栅可以提供多种独立的共振模式来控制光-物质相互作用。在这里，我们提出了一种数字复用矩形金属光栅的方法，该光栅可以用平面加工技术制造，并适用于各种结构和材料系统。由于不同的逻辑算子（OR、AND、XOR）可用于多路复用，我们研究了它们对多路复用金属光栅等离子体共振特性的影响，以及它们的性能对本构光栅结构特征的依赖性。得出的结论是，一般而言，对具有中等脊宽与周期比的本构矩形金属光栅的 OR 操作会产生最佳的多路复用光栅，这些光栅具有出色的等离子体共振图并且对制造不太重要。