摘要
利用COMSOL软件计算和模拟了波导的不同电场模式.发现导模的有效指数、传播长度和模态面积随波导的频率、宽度、高度、倾斜角度和石墨烯栅极电压的变化而变化.通过改变几何效应和材料参数,计算结果表明,当频率为2.57×10^(14)Hz时,脊波导段长度为400nm,高度为300nm,质量因子可达到7×10^(6),传播长度可达1.8um.该研究对低损耗纳米光子器件的设计具有重要意义.
In this paper,a graphene/hBN ridge waveguide layered is introduced.Different electric field modes of the waveguide are calculated and simulated by COMSOL software.It is found that the effective index,propagation length,and mode area of the guided mode vary as the dependences of frequency,width,height,tilt angle of the waveguide and graphene gate voltage.By altering geometry effects and material parameters,calculation results show that when the frequency is 2.57×10^(14)Hz,the ridge waveguide section length is 400nm and the height is 300nm,the quality factor can reach 7×10^(6),and the propagation length is up to 1.8um.This study is of great significance for the design of low-loss nanophotonic devices.
作者
刘悦
周胜
Liu Yue;Zhou Sheng(Harbin Normal University)
出处
《哈尔滨师范大学自然科学学报》
CAS
2023年第1期89-94,共6页
Natural Science Journal of Harbin Normal University
关键词
光波导
双曲超材料
损耗
Optical waveguide
Hyperbolic metamaterial
Ioss
