In this paper, a novel one-dimensional superconducting photonic crystal exploiting the Thue–Morse arrangement is theoretically investigated by the transfer matrix method. Two transmission states are switched in utilization of ambient temperature in the case of the same structure in the terahertz regime: one is the omnidirectional photonic bandgap (OBG) characteristics in low-temperature zones (about 10 K), and the other is wide-angle broadband absorption characteristics in high-temperature zones (about 90 K). Due to the modulation of temperature-dependent superconducting complex permittivity, the proposed structure can induce the OBG and broadband absorption at different temperatures. From the numerical results, the OBG can be notably tuned by manipulating the structural parameter of high refractive index dielectric. The effects of superconducting thickness on the switchable function regions are also considered. The proposed structure can possess both environment stable zero-$\bar n$ OBG at 10 K and preeminent broadband absorption in the TM polarization at 90 K, which offers theoretical guidance to the design of temperature switchable function selectors.

中文翻译：

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基于Thue-Morse序列的超导光子晶体中温度控制多功能选择器的研究

在本文中，通过转移矩阵方法从理论上研究了一种利用Thue-Morse排列的新型一维超导光子晶体。在太赫兹状态下具有相同结构的情况下，在利用环境温度时会切换两种传输状态：一种是低温区（约10 K）的全向光子带隙（OBG）特性，另一种是广角高温区（约90 K）的宽带吸收特性。由于对温度相关的超导复介电常数的调节，所提出的结构可以在不同温度下诱导OBG和宽带吸收。根据数值结果，可以通过操纵高折射率电介质的结构参数来调整OBG。还考虑了超导厚度对可切换功能区域的影响。拟议的结构可以同时具备环境稳定的零-$ \ bar n $ OBG在10 K时，TM极化中的宽带吸收出色，在90 K，这为温度可切换功能选择器的设计提供了理论指导。