Simultaneous guidance of electromagnetic and elastic waves via glide symmetry phoxonic crystal waveguides  

作　　者：雷林霖 何灵娟 廖清华 刘文兴 于天宝 Lin-Lin Lei;Ling-Juan He;Qing-Hua Liao;Wen-Xing Liu;Tian-Bao Yu(School of Physics and Materials Science,Nanchang University,Nanchang 330031,China)

机构地区：[1]School of Physics and Materials Science,Nanchang University,Nanchang 330031,China

出　　处：《Chinese Physics B》2024年第3期363-368,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.12064025);the Natural Science Foundation of Jiangxi Province,China(Grant No.20212ACB202006);the Major Discipline Academic and Technical Leaders Training Program of Jiangxi Province,China(Grant No.20204BCJ22012);the Open Project of the Key Laboratory of Radar Imaging and Microwave Photonic Technology of the Education Ministry of China.

摘　　要：A phoxonic crystal waveguide with the glide symmetry is designed,in which both electromagnetic and elastic waves can propagate along the glide plane at the same time.Due to the glide symmetry,the bands of the phoxonic crystal super-cell degenerate in pairs at the boundary of the Brillouin zone.This is the so-called band-sticking effect and it causes the appearance of gapless guided-modes.By adjusting the magnitude of the glide dislocation the edge bandgaps,the bandgap of the guided-modes at the boundary of the Brillouin zone,can be further adjusted.The photonic and phononic guided-modes can then possess only one mode for a certain frequency with relatively low group velocities,achieving single-mode guided-bands with relatively flat dispersion relationship.In addition,there exists acousto-optic interaction in the cavity constructed by the glide plane.The proposed waveguide has potential applications in the design of novel optomechanical devices.

关 键 词：phoxonic crystals glide symmetry WAVEGUIDE acousto-optic interaction 

分 类 号：TN252[电子电信—物理电子学] O441.4[理学—电磁学]