Plasmonics

, Volume 13, Issue 2, pp 365–371 | Cite as

A Polarization Filter Based on a Novel Photonic Crystal Fiber with a Gold-Coated Air Hole by Using Surface Plasmon Resonance

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Abstract

A novel design of a polarization filter based on photonic crystal fiber (PCF) is proposed in this paper. With the introduction of a gold-coated air hole, the resonance strength is much stronger in y-polarized direction than in x-polarized direction at some particular wavelengths, which is due to the metal surface plasmon effects. At the wavelength of 1.31 μm, the loss of y-polarized mode is 2138.34 dB/cm while the loss is very low in x polarization. Furthermore, the loss peak can be flexibly adjusted from the wavelength of 1.26 to 1.56 μm by changing the thickness of a gold layer, and the loss in y polarization can be kept above 1200 dB/cm. The significant loss in y polarization makes this PCF a good candidate for developing a polarization filter with high performance.

Keywords

Photonic crystal fiber Surface plasmon Polarization filter 

Notes

Acknowledgments

This work is supported by the National Science foundation of China (Granted Nos. 61475016 and U1431119).

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  1. 1.School of Electronic and information EngineeringBeijing Jiaotong UniversityBeijingChina

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