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Plasmonic Broadband Polarization Splitter Based on Dual-Core Photonic Crystal Fiber with Elliptical Metallic Nanowires

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Abstract

We design two kinds of plasmonic broadband polarization splitters based on dual-core photonic crystal fiber (DC-PCF) with elliptical Au or Ag nanowire in this paper. It is analyzed for the polarization independent characterestics of the designed DC-PCF by the finite element method (FEM). In order to excite the surface plasmon resonance (SPR), the metal Au and Ag are filled into elliptical central air hole. The resonance coupling between the fourth- or fifth-order surface plasmon modes (SPMs) and core-guided modes (CGMs) are founded by this numerical simulation. The device lengths of the designed splitters with Au nanowire are 2937 and 827 μm at the wavelength of 1.31 and 1.55 μm, respectively. As the extinction ratios are better than −20 dB, its bandwidths are better than 94 and 103 nm. For the designed Ag nanowire splitter, the device lengths are 3066 or 809 μm at 1.31 or 1.55 μm, respectively. The bandwidths with the extinction ratio better than −20 dB are 66 and 104 nm, respectively.

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Acknowledgments

This work was mainly supported by Ph.D Graduate Innovation Funded Rrojects in Hebei Province (Grant No. 00302-6370004), supported by the National Natural Science Foundation of China (Grant No. 61178026, 61475134, and 61505175 ) and the Nature Science Foundation of Hebei Province, China (Grant No. E2012203035).

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Authors and Affiliations

  1. Key Laboratory of Metastable Materials Science and Technology, College of Science, Yanshan University, Qinhuangdao, 066004, People’s Republic of China

    Zhenkai Fan, Shuguang Li, Qiang Liu, Hailiang Chen & Xinyu Wang

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  1. Zhenkai Fan
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  2. Shuguang Li
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  3. Qiang Liu
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  4. Hailiang Chen
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  5. Xinyu Wang
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Correspondence to Shuguang Li.

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Fan, Z., Li, S., Liu, Q. et al. Plasmonic Broadband Polarization Splitter Based on Dual-Core Photonic Crystal Fiber with Elliptical Metallic Nanowires. Plasmonics 11, 1565–1572 (2016). https://doi.org/10.1007/s11468-016-0211-8

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  • DOI: https://doi.org/10.1007/s11468-016-0211-8

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