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Investigation of light coupling between a semiconductor nanowire and a plasmonic waveguide

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Abstract

We report a theoretical investigation of light coupling between a semiconductor nanowire (NW) and a plasmonic waveguide. The light emitted from the NW is coupled to the waveguide and excites a symmetric plasmonic waveguide mode propagating along the top surface of the waveguide. Using numerical simulations, coupling efficiencies were calculated for various coupling structures consisting of tapered/non-tapered NWs and single-strip/double-strip gold waveguides. The highest coupling efficiency of >2.8% was obtained between a tapered NW and a double-strip plasmonic waveguide with a height of 200 nm. This study offers a new opportunity for the efficient integration of nanoscale light sources with plasmonic waveguides and enables further miniaturization of ultracompact photonic integrated circuits.

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Authors and Affiliations

  1. Department of Physics, Korea University, Seoul, 136-701, Korea

    You-Shin No, Jae-Hyuck Choi, Min-Soo Hwang & Hong-Gyu Park

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  1. You-Shin No
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  2. Jae-Hyuck Choi
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  3. Min-Soo Hwang
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  4. Hong-Gyu Park
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Correspondence to Hong-Gyu Park.

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No, YS., Choi, JH., Hwang, MS. et al. Investigation of light coupling between a semiconductor nanowire and a plasmonic waveguide. Journal of the Korean Physical Society 63, 1851–1854 (2013). https://doi.org/10.3938/jkps.63.1851

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  • DOI: https://doi.org/10.3938/jkps.63.1851

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