Nanoimprinted reflecting gratings for long-range surface plasmon polaritons |
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| Affiliation: | 1. MIC – Department of Micro and Nanotechnology, Nano•DTU, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark;2. COM•DTU, Nano•DTU, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark;3. University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark;4. Science Institute, University of Iceland, Dunhagi 3, IS-107 Reykjavik, Iceland;1. Research Center of Ultra-precision Optoelectronic Instrumentation, Harbin Institute of Technology, Harbin 150080, China;2. Department of Electrical Engineering and Computer Science, C-PHOM, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109, USA;1. Department of Basic Science, University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo 153-8902, Japan;2. Central Research Institute of Electric Power Industry, 2-6-1, Nagasaka, Yokosuka, Kanagawa 240-0196, Japan |
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| Abstract: | We present a novel design, fabrication, and characterization of reflecting gratings for long-range surface plasmon polaritons (LR-SPPs) at telecom wavelengths. LR-SPP waveguides consisting of a thin (12 nm) gold film embedded in a thick (45 μm) layer of dielectric polymer cladding are structured by nanoimprint lithography to form a reflecting Bragg grating. By performing spectrally resolved transmission measurements pronounced Bragg grating behaviour is observed, with the transmission dip increasing (up to ∼12 dB) with the increasing grating length. |
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