标题： 电压诱导的在一维光子晶体中扭曲向列缺陷层的缺陷模相互作用 显示英文标题

标题： Voltage-induced defect mode interaction in a one-dimensional photonic crystal with a twisted-nematic defect layer

摘要： 缺陷模式在一种电可调的一维光子晶体（1D PC/TN）的带隙中被研究。它们在施加电压下的频率偏移和干涉现象通过实验和理论进行了研究。我们处理的是缺陷层厚度远大于波长的情况（Mauguin条件）。理论表明，缺陷模式可能具有复杂的结构，具有椭圆偏振特性。两组极化模式相互作用，并在奇偶性相反的情况下表现出避让交叉现象。 显示英文摘要

摘要： Defect modes are investigated in a band gap of an electrically tunable one-dimensional photonic crystal infiltrated with a twisted-nematic liquid crystal (1D PC/TN). Their frequency shift and interference under applied voltage are studied both experimentally and theoretically. We deal with the case where the defect layer thickness is much larger than the wavelength (Mauguin condition). It is shown theoretically that the defect modes could have a complex structure with the elliptic polarization. Two series of polarized modes interact with each other and exhibit an avoided crossing phenomenon in the case of opposite parity.