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Nonreciprocal self-collimation in two-dimensional gyromagnetic photonic crystals and its applications in signal separation

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Abstract

We investigate self-collimated electromagnetic waves in two-dimensional gyromagnetic photonic crystals (GPCs) fabricated by semi-cylinder rods. The nonreciprocal self-collimation transmission is found by means of band structure and equi-frequency contour (EFC) calculations. Progressively tilting flat EFC by optimizing the structure of GPC, we show that nonreciprocal spatial wavelength division can be achieved without any corrugations inside the structure. Further, the frequency range for the nonreciprocal spatial wavelength division can be flexibly manipulated by the external static magnetic field.

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Acknowledgments

This work was supported by the NSFC (61271080) and RFDP (20110091110030). R.X.W. thanks partial support from STP (BK2012722) and PAPD of Jiangsu Province.

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Authors and Affiliations

  1. School of Electronic Science and Engineering, Nanjing University, Nanjing, 210093, China

    Qing-bo Li, Zhen Li & Rui-xin Wu

  2. Huaian Key Laboratory of Information Functional Materials, School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huaian, 223300, China

    Qing-bo Li & Ping Zhou

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  1. Qing-bo Li
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  2. Zhen Li
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  4. Rui-xin Wu
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Correspondence to Rui-xin Wu.

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Li, Qb., Li, Z., Zhou, P. et al. Nonreciprocal self-collimation in two-dimensional gyromagnetic photonic crystals and its applications in signal separation. Appl. Phys. A 121, 1057–1060 (2015). https://doi.org/10.1007/s00339-015-9132-1

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  • DOI: https://doi.org/10.1007/s00339-015-9132-1

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