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A Polarization Filter Based on Photonic Crystal Fiber with Asymmetry Around Gold-Coated Holes

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Abstract

We propose a modified design for a photonic crystal fiber (PCF) filter based on surface plasmon resonance(SPR). The air holes are arrayed in rectangular lattices, while the size and the pitches of holes around the gold-coated holes are different. That can separate the x-polarization and y-polarization of second-order surface plasmon polariton (SPP). The resonance strength of the surface plasmon mode and import of structural parameters of the PCF on the filter characteristics are studied through using the finite element method (FEM). Numerical simulations demonstrate that the thickness of the gold layer, the gold-coated or gold-filled, and the asymmetry around the gold-coated holes have a great effect on the filter characteristics. It is certain to obtain a resonance strength as high as 873 and 771.5 dB/cm at the communication wavelength of 1050 and 1310 nm in x-polarization by adjusting the size and the place of the gold-coated holes, while the loss is extremely low in y-polarization.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (Grant No. 61178026 and 61475134) and the Nature Science Foundation of Hebei Province, China (Grant No. E2012203035). The authors wish to thank the anonymous reviewers for their valuable suggestions.

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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

    Hui Li, Shuguang Li, Hailiang Chen, Jianshe Li, Guowen An & Jianchen Zi

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  1. Hui Li
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  2. Shuguang Li
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  3. Hailiang Chen
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  4. Jianshe Li
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  5. Guowen An
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  6. Jianchen Zi
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Correspondence to Shuguang Li.

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Li, H., Li, S., Chen, H. et al. A Polarization Filter Based on Photonic Crystal Fiber with Asymmetry Around Gold-Coated Holes. Plasmonics 11, 103–108 (2016). https://doi.org/10.1007/s11468-015-0023-2

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  • DOI: https://doi.org/10.1007/s11468-015-0023-2

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