Xie Mingyan, Huang Yuanda, Qin Haoyuan, Du Guiqiang
SDU-ANU Joint Science College, Shandong University, Weihai 264209, China.
School of Space Science and Technology, Shandong University, Weihai 264209, China.
Nanomaterials (Basel). 2025 Jul 19;15(14):1122. doi: 10.3390/nano15141122.
Tunneling modes in all-dielectric one-dimensional photonic crystals can be utilized for multi-channel filtering. However, these tunneling modes generally blue shift upon increasing the incident angle. When hyperbolic metamaterials are introduced into one-dimensional photonic crystals, the competition between the propagation phase shifts in the dielectric materials and hyperbolic metamaterials can result in different angle dependencies, including blue shift, abnormal zero shift, and abnormal red shift. When the reduction in the propagation phase in the dielectric layer exceeds the increment in the propagation phase in the hyperbolic metamaterial, the tunneling modes are blue-shifted; conversely, when the phase increment in the hyperbolic metamaterial exceeds the phase reduction in the dielectric layer, the tunneling modes are abnormally red-shifted. When the phase changes in the two materials are the same, the tunneling modes are angle independent. In this study, we investigated the multiple filtering effects of one-dimensional photonic structures composed of hyperbolic metamaterials. These composed structures exhibited multiple tunneling modes based on one-, two-, or three-angle dependencies and can be applied in novel optical devices with different angle-dependence requirements.
全介质一维光子晶体中的隧穿模式可用于多通道滤波。然而，这些隧穿模式通常会随着入射角的增加而发生蓝移。当将双曲型超材料引入一维光子晶体时，介电材料和双曲型超材料中传播相移之间的竞争会导致不同的角度依赖性，包括蓝移、异常零移和异常红移。当介电层中传播相的减小超过双曲型超材料中传播相的增加时，隧穿模式会发生蓝移；相反，当双曲型超材料中的相增加超过介电层中的相减小时，隧穿模式会发生异常红移。当两种材料中的相变化相同时，隧穿模式与角度无关。在本研究中，我们研究了由双曲型超材料组成的一维光子结构的多重滤波效应。这些组成结构基于一、二或三种角度依赖性表现出多种隧穿模式，并且可应用于具有不同角度依赖性要求的新型光学器件中。
