Resonant Coupling of the Guided Mode with Surface Plasma Mode in a Stratified Structure Containing a Metal-Clad Dielectric-Film Waveguide Having Low-Refractive-Index Buffer Layer

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概要

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• When the guided mode in a dielectric film waveguide couples with the surface plasma mode, the dispersion of the coupled guided mode, which depends on the thickness of buffer layer between the film waveguide and metal substrate, exhibits anomalous characteristics, and therefore the film waveguide supports even and odd guided modes. However, owing to the collision loss of the free electrons, the phase velocities of these modes degenerate and the dispersion becomes zero in the vicinity of the surface plasma mode, with an optimum buffer layer thickness. When the degenerate modes are optically excited through a prism region, this stratified structure exhibits double tuned absorption characteristics with a flat absorption peak. These resonant coupling phenomena were studied.

• 社団法人応用物理学会の論文
• 1981-10-05

著者

• KITAJIMA Hiroe

  Kyushu Institute of Technology

関連論文

• Various Light Resonance Mechanisms in Dielectric and Metallic Layers, and a Measurement Procedure for Optical Constants
• Resonant Coupling of the Guided Mode with Surface Plasma Mode in a Stratified Structure Containing a Metal-Clad Dielectric-Film Waveguide Having Low-Refractive-Index Buffer Layer

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