Fano resonance and plasmon-induced transparency in waveguide-coupled surface plasmon resonance sensors
Fano resonance and plasmon-induced transparency in waveguide-coupled surface plasmon resonance sensors
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DOI：
10.7567/apex.8.022201
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发表时间：
2015-02-01
影响因子：
2.3
通讯作者：
Sekkat, Zouheir
中科院分区：
文献类型：
--
作者：
Hayashi, Shinji;Nesterenko, Dmitry V.;Sekkat, Zouheir
提出了一种允许表面等离子体激元和波导模式之间耦合的平面多层结构。由于法诺共振和耦合产生的等离激元引起的透明度，计算的反射率曲线表现出尖锐的共振。在谐振处获得的电场分布证明了激发模式的混合性质。当使用法诺共振进行传感时，强度调制的灵敏度相对于传统表面等离子体共振传感器提高了两个数量级。 (C) 2015 日本应用物理学会。
A planar multilayer structure that allows coupling between surface plasmon polaritons and waveguide modes is proposed. Calculated reflectivity curves exhibit sharp resonances due to the Fano resonance and plasmon-induced transparency arising from the coupling. Electric field profiles obtained at the resonances demonstrate the hybrid nature of the modes excited. When the Fano resonance is used for sensing, the sensitivity with intensity modulation is enhanced by two orders of magnitude relative to that of conventional surface plasmon resonance sensors. (C) 2015 The Japan Society of Applied Physics.