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Anticrossing Behavior of Surface Plasmon Polariton Dispersions in Metal-Insulator-Metal Structures |
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| Authors: | Siham Refki Shinji Hayashi Anouar Rahmouni Dmitry V Nesterenko Zouheir Sekkat |
| Institution: | 1.Optics and Photonics Center, Moroccan Foundation for Advanced Science,Innovation and Research (MAScIR),Rabat,Morocco;2.Faculty of Sciences,University Mohammed V,Rabat,Morocco;3.Graduate School of Engineering,Kobe University,Kobe,Japan;4.Graduate School of Engineering,Osaka University,Suita,Japan |
| Abstract: | The anticrossing behavior of dispersion curves of the surface plasmon polaritons supported by metal-insulator-metal structures are studied experimentally and theoretically. Samples consisting of a poly(methyl methacrylate) layer sandwiched by Ag films are prepared and their angle- and wavelength-scan attenuated total reflection spectra are measured. From an analysis of the angle-scan spectrum, the coupled-mode nature of the surface plasmon polariton modes is suggested. The dispersion relations obtained from the wavelength-scan spectra exhibit clearly the anticrossing behavior that arises from the coupling of the modes. The experimental dispersion relations are in good agreement with theoretical ones. |
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