Versatile on-chip light coupling and(de)multiplexing from arbitrary polarizations to controlled waveguide modes using an integrated dielectric metasurface

作     者：YUAN MENG ZHOUTIAN LIU ZHENWEI XIE RIDE WANG TIANCHENG QI FUTAI HU HYUNSEOK KIM QIRONG XIAO XING FU QIANG WU SANG-HOON BAE MALI GONG XIAOCONG YUAN 

作者机构：State Key Laboratory of Precision Measurement Technology and InstrumentsDepartment of Precision InstrumentTsinghua UniversityBeijing 100084China Research Laboratory of ElectronicsMassachusetts Institute of TechnologyCambridgeMassachusetts 02139USA Key Laboratory of Photonic Control TechnologyMinistry of EducationTsinghua UniversityBeijing 100084China Nanophotonics Research CentreShenzhen Key Laboratory of Micro-Scale Optical Information TechnologyShenzhen UniversityShenzhen 518060China Key Laboratory of Weak-Light Nonlinear PhotonicsMinistry of EducationTEDA Institute of Applied Physics and School of PhysicsNankai UniversityTianjin 300457China Department of Mechanical EngineeringMassachusetts Institute of TechnologyCambridgeMassachusetts 02139USA 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2020年第8卷第4期

页      面：564-576页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 070207[理学-光学] 07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China(61675114,61875103,61935013,61975133,U1701661) Natural Science Foundation of Beijing Municipality(501100004826) Tsinghua University Initiative Scientific Research Program(20151080709) Beijing Young Talents Support Project(2017000020124G044) 

主　　题：Versatile on-chip light arbitrary polarizations waveguide modes an integrated dielectric metasurface 

摘      要：Metasurfaces have found broad applicability in free-space optics,while its potential to tailor guided waves remains barely *** synergizing the Jones matrix model with generalized Snell’s law under the phase-matching condition,we propose a universal design strategy for versatile on-chip mode-selective coupling with polarization sensitivity,multiple working wavelengths,and high efficiency *** coupling direction,operation frequency,and excited mode type can be designed at will for arbitrary incident polarizations,outperforming previous technology that only works for specific polarizations and lacks versatile mode ***,using silicon-nanoantenna-patterned silicon-nitride photonic waveguides,we numerically demonstrate a set of chip-scale optical couplers around 1.55μm,including mode-selective directional couplers with high coupling efficiency over 57%and directivity about 23 d *** and wavelength demultiplexer scenarios are also proposed with 67%maximum efficiency and an extinction ratio of 20 d ***,a chip-integrated twisted light generator,coupling free-space linear polarization into an optical vortex carrying 1 h orbital angular momentum(OAM),is also reported to validate the mode-control *** comprehensive method may motivate compact wavelength/polarization(de)multiplexers,multifunctional mode converters,on-chip OAM generators for photonic integrated circuits,and high-speed optical telecommunications.