1篇
您的检索式：作者名="Gujing Tang"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Ultracompact topological photonic switch based on valley-vortex-enhanced high-efficiency phases shift显示文摘Topologically protected edge states based on valley photonic crystals(VPCs)have been widely studied,from theoretical verifcation to technical applications.However,research on integrated tuneable topological devices is still lacking.Here,we study the phase-shifting theory of topological edge modes based on a VPC structure.Benefiting from the phase vortex formed by the VPC structure,the optical path of the topological edge mode in the propagation direction is approximately two-fold that of the conventional optical mode in a strip waveguide.In experiments,we show a 1.57-fold improvement inπ-phase tuning efficiency.By leveraging the highefficiency phase-shifting properties and the sharp-turn features of the topological waveguide,we demonstrate an ultracompact 1×2 thermo-optic topological switch(TOTS)operating at telecommunication wavelengths.A switching power of 18.2 mW is needed with an ultracompact device footprint of 25.66×28.3μm in the wavelength range of 1530-1582 nm.To the best of our knowledge,this topological photonic switch is the smallest switch of any dielectric or semiconductor 1×2/2×2 broadband optical switches,including thermo-optic and electro-optic switches.In addition,a high-speed transmission experiment employing the proposed TOTS is carried out to demonstrate the robust transmission of high-speed data.Our work reveals the phase shifting mechanism of valley edge modes,which may enable diverse topological functional devices in many fields,such as optical communications,nanophotonics,and quantum information processing. | Hongwei Wang Gujing Tang Yu He Zhen Wang Xingfeng Li Lu Sun Yong Zhang Luqi Yuan Jianwen Dong Yikai Su | 2022 | Light(Science & Applications)2022，11，11： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员