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Transformation of amplification and attenuation through PT-symmetry structure under modulation of resonators

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Abstract

In order to achieve the transformation of amplification and attenuation with one device, we design a parity-time—symmetry structure through resonator modulation. We use the transfer matrix method to study the optical properties of the designed structure. The structure performs amplification along one incidence direction, and attenuation by absorption along the other incidence direction. The contrast of amplification and attenuation, and the corresponding bandwidth can be modulated through the structure parameters. An optimized structure is obtained with the transformation of large amplification and perfect absorption.

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Authors and Affiliations

  1. School of Computer Science and Telecommunication Engineering, Jiangsu University, Zhenjiang, 212013, China

    Sifang Ye, Xiangqian Kuang & Yuntuan Fang

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  1. Sifang Ye
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  2. Xiangqian Kuang
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  3. Yuntuan Fang
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Correspondence to Yuntuan Fang.

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Ye, S., Kuang, X. & Fang, Y. Transformation of amplification and attenuation through PT-symmetry structure under modulation of resonators. Opt Quant Electron 51, 151 (2019). https://doi.org/10.1007/s11082-019-1866-0

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  • DOI: https://doi.org/10.1007/s11082-019-1866-0

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