Tunable waveguide and cavity in a phononic crystal plate by controlling whispering-gallery modes in hollow pillars

被引：116

作者：

Jin, Yabin ^{[1
,2
]}

Fernez, Nicolas ^{[2
]}

Pennec, Yan ^{[2
]}

Bonello, Bernard ^{[3
]}

Moiseyenko, Rayisa P. ^{[4
]}

Hemon, Stephanie ^{[2
]}

Pan, Yongdong ^{[1
]}

Djafari-Rouhani, Bahram ^{[2
]}

机构：

[1] Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai 200092, Peoples R China

[2] Univ Lille 1, Inst Elect Microelect & Nanotechnol, CNRS, Unite Mixtes Rech UMR 8520, F-59650 Villeneuve Dascq, France

[3] Inst NanoSci Paris, UMR 7588, CNRS, F-75005 Paris, France

[4] Tech Univ Denmark DTU, Dept Phys, DK-2800 Lyngby, Denmark

来源：

PHYSICAL REVIEW B | 2016年 / 93卷 / 05期

关键词：

BAND-STRUCTURE; CYLINDERS;

D O I：

10.1103/PhysRevB.93.054109

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the properties of a phononic crystal plate with hollow pillars and introduce the existence of whispering-gallery modes (WGMs). We show that by tuning the inner radius of the hollow pillar, these modes can merge inside both Bragg and low frequency band gaps, deserving phononic crystal and acoustic metamaterial applications. These modes can be used as narrow pass bands for which the quality factor can be greatly enhanced by the introduction of an additional cylinder between the hollow cylinder and the plate. We discuss some functionalities of these confined WGM in both Bragg and low frequency gaps for wavelength division in multiplexer devices using heteroradii pillars introduced into waveguide and cavity structures.

引用

页数：8

共 41 条

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