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Grating-coupled transmission-type surface plasmon resonance sensors based on dielectric and metallic gratings

机译:基于介电和金属光栅的光栅耦合透射型表面等离子体共振传感器

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摘要

We investigated grating-coupled transmission-type surface plasmon resonance (SPR) for sensing applications.In the transmission-type SPR structure, propagating surface plasmons are outcoupled to radiation modes by dielectric and metallic gratings on a metal film. The results calculated in air and water suggest that the proposed structures present extremely linear sensing characteristics. In terms of a figure of merit, a metallic grating-based structure performs 5.4 and 3.7 times better than that of a dielectric grating in air and water, respectively.
机译:我们研究了用于传感应用的光栅耦合透射型表面等离子体激元共振(SPR)。在空气和水中的计算结果表明,所提出的结构具有极高的线性传感特性。根据品质因数,基于金属光栅的结构在空气和水中的性能分别比介电光栅好5.4倍和3.7倍。

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