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Nonreciprocal absorber with a narrow band of angular polarization sensitive regions based on a quasi-periodic structure

机译:基于准周期性结构,具有窄带角度偏振敏感区域的非探测器吸收器

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摘要

In the quasi-periodic structure (QPS) containing InSb, a nonreciprocal absorber with a narrow band of angular polarization sensitive regions is studied. Due to the effective role of the antireflection layers (ALs), the effective impedance of the overall structure matches the vacuum wave impedance. Benefiting from the special absorption structure, an absorption band will be created in the photonic bandgap. The results of the investigation show that, with the same parameters, the QPS has a larger frequency bandwidth than the periodic structure and, if the incident frequency of the electromagnetic wave is the same, the former has a larger angular selective range. The degrees of polarization separation and nonreciprocal ability of the presented QPS can be regulated by temperature and magnetic induction intensity. Consequently, the proposed QPS can provide a new basis for the development of polarization separators and nonreciprocal devices. (C) 2021 Optical Society of America
机译:在含有InSb的准周期结构(QPS)中,研究了具有窄带角极化敏感区的非互易吸收体。由于减反射层(ALs)的有效作用,整个结构的有效阻抗与真空波阻抗匹配。由于这种特殊的吸收结构,光子带隙中会产生一个吸收带。研究结果表明,在参数相同的情况下,QPS比周期结构具有更大的频带宽度,并且在电磁波入射频率相同的情况下,QPS具有更大的角度选择范围。所提出的量子点的偏振分离度和非互易能力可由温度和磁感应强度调节。因此,所提出的QPS可以为偏振分离器和非互易器件的发展提供新的基础。(2021)美国光学学会

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  • 来源
    《Optics Letters》 |2021年第8期|共4页
  • 作者单位

    Nanjing Univ Posts &

    Telecommun Coll Elect &

    Opt Engn Nanjing 210023 Peoples R China;

    Nanjing Univ Posts &

    Telecommun Coll Elect &

    Opt Engn Nanjing 210023 Peoples R China;

    Nanjing Univ Posts &

    Telecommun Coll Elect &

    Opt Engn Nanjing 210023 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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