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Hybrid waveguide-surface plasmon polariton modes in a guided-mode resonance grating
Authors:Chunlei Tan  Janne Simonen  Tapio Niemi
Institution:1. Key Laboratory of Intelligent Computing & Signal Processing, Ministry of Education, Anhui University, Hefei 230039, PR China;2. Department of Physics, Anhui Medical University, Hefei 230032, PR China;3. College of Optoelectronics Engineering, Zaozhuang University, Zaozhuang 277160, PR China;1. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China;2. Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China;1. V. I. Vernadsky Crimean Federal University, Simferopol, Russia;2. National Research University of Electronic Technology, Zelenograd, Moscow, Russia;1. FCFM, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico.;2. ESCOM, Instituto Politécnico Nacional, México DF 07738, Mexico.;1. College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. Nanjing Artillery Academy, Nanjing 211132, China;1. College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;2. Department of Geosciences, Center for Materials by Design, and Institute for Advanced Computational Science, Stony Brook University, Stony Brook, NY 11794, USA
Abstract:We analyze the coupling between surface plasmon polaritons in a metal grating and the guided modes of a dielectric waveguide. Our model structure is a gold wire grating on a slab waveguide made of silicon nitride on silica wafer. The excitation of guided-mode resonances, surface plasmon polariton modes and hybrid waveguide-plasmon modes are observed in numerical simulations. Our experiments verify the existence of the predicted modes. These hybrid modes add significant degrees of freedom in designing structures for plasmonic applications.
Keywords:
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