Light-tunable Fano resonance in metal-dielectric multilayer structures.
Light-tunable Fano resonance in metal-dielectric multilayer structures.
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DOI:
10.1038/srep33144
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发表时间:
2016-09-14
影响因子:
4.6
通讯作者:
Sekkat Z
中科院分区:
文献类型:
--
作者:
Hayashi S;Nesterenko DV;Rahmouni A;Ishitobi H;Inouye Y;Kawata S;Sekkat Z
High-Q optical Fano resonances realized in a variety of plasmonic nanostructures and metamaterials are very much promising for the development of new potent photonic devices, such as optical sensors and switches. One of the key issues in the development is to establish ways to effectively modulate the Fano resonance by external perturbations. Dynamic tuning of the Fano resonance applying the mechanical stress and electric fields has already been demonstrated. Here, we demonstrate another way of tuning, i.e., photo-tuning of the Fano resonance. We use a simple metal-dielectric multilayer structure that exhibits a sharp Fano resonance originating from coupling between a surface plasmon polariton mode and a planar waveguide mode. Using a dielectric waveguide doped with azo dye molecules that undergo photoisomerization, we succeeded in shifting the Fano resonance thorough photo-modulation of the propagation constant of the waveguide mode. The present work demonstrates the feasibility of photo-tuning of the Fano resonance and opens a new avenue towards potential applications of the Fano resonance.
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影响因子:
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作者:
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通讯作者:
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通讯作者:
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