标题：Analysis of Temperature-Dependent Optical Properties in 1D Ternary Superconducting Photonic Crystal with Mirror Symmetry
作者：Wu, Jijiang; Gao, Jinxia
作者机构：[Wu, Jijiang; Gao, Jinxia] Shandong Univ Technol, Sch Sci, Zibo 255049, Peoples R China.
通讯作者地址：[Wu, JJ]Shandong Univ Technol, Sch Sci, Zibo 255049, Peoples R China.
来源：JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
关键词：Photonic crystal; Defect modes; Low temperature sensor; Transfer matrix; method
摘要：The temperature dependence of the defect mode in a 1D ternary superconducting photonic crystal (PC) with mirror symmetry was theoretically investigated by simultaneously considering thermal expansion effect and thermal-optical effect. Three different materials H (high-refractive index dielectric), L (low-refractive index dielectric), and S (superconducting material) are used to construct the ternary superconducting PC structure. For comparison, six structures are discussed. It is found that the structure (HLS) (N) (SLH) (N) has the highest temperature sensitivity. Here, N is the number of periods. The average change in the central wavelength of the defect mode is 31.18 nm/K as the thickness of superconducting layer is 50 nm. Thus, based on the structure (HLS) (N) (SLH) (N) , a low temperature sensor with higher sensitivity can be designed to realize the low temperature sensor.