Hybrid dual wedge plasmonic waveguide with long-range propagation and subwavelength mode confinement
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Department of Optics and Optical Engineering, Uniersity of Science and Technology of China,Uniersity of Science and Technology of China,Uniersity of Science and Technology of China,Uniersity of Science and Technology of China

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The National Natural Science Foundation of China, The National Key Basic Research Program of China, The Natural Science Foundation of Anhui Province

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    Abstract:

    A hybrid dual wedge plasmonic (HDWP) waveguide consisting of two dielectric wedges and a diamond metal wire was proposed.The coupling between dielectric wedge waveguide mode and long-rang surface plasmon polariton mode results in both lowpropagation loss and ultra-deep-subwavelength confinement.The HDWP waveguide achieves a normalized mode area of 2.9 × 10-3with a moderate propagation length of 532 μm or a propagation length of 3028 μm with a normalized mode area of 6.2 × 10-3.The impacts of possible fabrication imperfections on the mode properties are studied.The results indicate that the HDWP waveguide is quite tolerant to fabrication errors.

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YUE Wen-Cheng, YAO Pei-Jun, CHEN Xiao-Lin, TAO Run-Xia. Hybrid dual wedge plasmonic waveguide with long-range propagation and subwavelength mode confinement[J]. Journal of Infrared and Millimeter Waves,2018,37(6):663~667

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History
  • Received:March 09,2018
  • Revised:September 27,2018
  • Adopted:April 03,2018
  • Online: November 30,2018
  • Published: