西南医科大学学报2025，Vol.48Issue(5)：465-470,6.DOI:10.3969/j.issn.2096-3351.2025.05.005
基于YIG材料的单向近零折射率模式在相位调控、慢波及微波诊疗中的应用
Application of Unidirectional Index-near-zero Modes based on YIG for Phase Modulation,Slow Wave,and Microwave Thermotherapy Treatment
摘要
Abstract
Objective The index-near-zero(INZ)mode has demonstrated significant application potential in fields such as all-optical signal communications and physical treatment.However,its modulation typically relies on complex experimental tech-niques.Therefore,designing and validating flexibly tunable INZ modes and their application scenarios is of great importance.Methods This paper designed and proposed two deep-subwavelength magneto-optical unidirectional waveguides based on yttrium iron garnet(YIG).By theoretically analyzing the relationship between the dispersion curves of surface modes and waveguide parameters in the waveguide structure,the theory for regulating the INZ mode was clarified and validated using techniques such as the finite element method.Results Novel broadband tunable INZ modes were discovered.The frequencies of these modes were explicitly dependent on the external magnetic field,exhibiting predictable and tunable characteristics.Based on this,broadband tunable all-optical phase modulators and one slow-wave INZ device were designed by simply adjusting the external magnetic field.Conclusion The INZ modes in the unidirectional waveguides designed in this paper exhibit tunability and broadband characteristics.The functional devices realized using unidirectional INZ modes provide new possibilities for miniaturized optical system and can also be applied in medical fields such as non-invasive controllable microwave thermotherapy treatment.关键词
近零折射率/磁光单向波导/钇铁石榴石/相位调控器/有限元法Key words
Index-near-zero/One-way waveguide/Yttrium iron garnet/Phase modulator/Finite element method分类
医药卫生引用本文复制引用
何盼盼,张培高,杨梦婷,罗亚梅,徐杰..基于YIG材料的单向近零折射率模式在相位调控、慢波及微波诊疗中的应用[J].西南医科大学学报,2025,48(5):465-470,6.基金项目
国家自然科学基金(12404143) （12404143）
四川省中央引导地方科技发展专项(2024ZYD0270) （2024ZYD0270）
四川省科技厅项目(2023NSFSC1309) （2023NSFSC1309）
泸州市科技计划项目(2023JYJ046) （2023JYJ046）
泸州市智能控制与电子器件应用泸州市重点实验室(ZK202210) （ZK202210）
