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Terahertz wave polarization splitter using full band-gap photonic crystals

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Abstract

Manipulation of terahertz wave polarization state exhibits tremendous potential in developing application of terahertz science and technology. A terahertz polarization beam splitter based on three linear defect photonic crystal waveguides is designed and numerically demonstrated. Both plane wave expansion method and finite-difference time-domain method are used to calculate and analyze the characteristics of the proposed device. The simulation results show that the designed polarization beam splitter can split TE and TM polarized mode into different propagation directions with high efficiency in the frequency range from 1.225THz to 1.260THz. Especially, the extinction ratios for both TE and TM modes are larger than 20dB.

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Acknowledgements

This work was partially supported by the National Natural Science Foundation of China under Grant Nos.61379024 and 61131005, the Zhejiang Province Natural Science Fund for Distinguished Young Scientists under Grant No. LR12F05001.

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Authors and Affiliations

  1. Centre for THz Research, China Jiliang University, Hangzhou, 310018, China

    Sun Jian-zhong & Li Jiu-sheng

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  1. Sun Jian-zhong
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  2. Li Jiu-sheng
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Correspondence to Li Jiu-sheng.

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Jian-zhong, S., Jiu-sheng, L. Terahertz wave polarization splitter using full band-gap photonic crystals. J Infrared Milli Terahz Waves 36, 255–261 (2015). https://doi.org/10.1007/s10762-014-0131-7

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  • DOI: https://doi.org/10.1007/s10762-014-0131-7

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