Zhang Tao, Li Fen-Ying, Wang Peng-Xiang, Mao Ming-Yu, Ma Yu, Zhang Dan, Zhang Haifeng
Appl Opt. 2021 Feb 10;60(5):1448-1455. doi: 10.1364/AO.413083.
Simple periodic one-dimensional (1D) common photonic crystals (PCs) doped with InSb are proposed to research the Faraday rotation (FR) effect by applying a 4×4 transfer matrix method. Analysis indicates that the given 1D PCs can realize a giant FR angle. The influences of the properties of InSb (magnetic induction intensity, temperature, and the length of the InSb layer) and the repeat number of the structure on the FR are investigated due to the tunability of InSb and the features of the structure. Through calculation, it is found that, by adjusting these parameters, we can clearly observe the movement of the extreme values of the FR angle. In addition, the numerical results show that when the magnetic induction intensity and the repeat number of the structure are changed, the FR angle will be significantly altered at the fixed extreme frequency point. Specifically, if the temperature and the thickness of InSb layer are altered, the extreme value of the FR and the frequency point where it happens also will change. We believe these obtained results can provide ideas to design optical isolators and optical switches.
提出了一种简单的周期性一维（1D）掺杂锑化铟的普通光子晶体（PC），通过应用4×4转移矩阵法研究法拉第旋转（FR）效应。分析表明，给定的一维光子晶体可以实现巨大的FR角。由于锑化铟的可调性和结构的特点，研究了锑化铟的性质（磁感应强度、温度和锑化铟层的长度）以及结构的重复次数对FR的影响。通过计算发现，通过调整这些参数，可以清楚地观察到FR角极值的移动。此外，数值结果表明，当磁感应强度和结构的重复次数改变时，在固定的极值频率点处FR角将显著改变。具体而言，如果改变温度和锑化铟层的厚度，FR的极值及其出现的频率点也会改变。我们相信这些结果可以为设计光隔离器和光开关提供思路。
