Exciting broadband thermochromic transmission property opposite to vanadium dioxide in the atmospheric window

作     者：GONG YiQuan GUO YanMing CHEN ShuNi LI Meng PAN QingHui SHUAI Yong 

作者机构：Ministry of Industry and Information Technology Key Laboratory of Aerospace ThermophysicsSchool of Energy Science and EngineeringHarbin Institute of TechnologyHarbin 150001China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2024年第67卷第7期

页      面：2244-2254页

核心收录：

学科分类：08[工学] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 52227813, 52106085) China Postdoctoral Science Foundation (Grant Nos. 2023M740905, 2021M690822) the Natural Science Foundation of Heilongjiang Province (Grant No. LH2023E043) the National Key Research and Development Program of China (Grant No. 2022YFE0210200) the Fundamental Research Funds for the Central Universities (Grant No. 2022ZFJH04) 

主　　题：optical communication thermochromic property atmospheric window optical switch magnetic polariton 

摘      要：The traditional telecommunications band performs poorly in harsh weather conditions due to atmospheric absorption. In recent years, researchers have begun to study optical communication through atmospheric windows, and optical switches are an essential component of optical communication. A broadband atmospheric window optical switch was proposed based on Vanadium dioxide and magnetic polaritons(MP). It is formed by the stacking of two metal-dielectric-metal structures. The simulation results show that the modulation depth can reach 98.38%, and the extinction ratio is 17.93 dB. By calculating the magnetic field, we confirmed that the reason for the “off mode is the coupling between the different MP modes, while the “onmode is the excitation of MP. The optical switch we proposed may be applied to radiation cooling and optical satellite communication.