Routing emission with a multi-channel nonreciprocal waveguide

作     者：HAO HU LIANGLIANG LIU XIAO HU DONGJUE LIU DONGLIANG GAO 

作者机构：School of Electrical and Electronic Engineering Nanyang Technological University 639798 Singapore Singapore Research Center of Applied Electromagnetics School of Electronic and Information Engineering Nanjing University of Information Science and TechnologyNanjing 210044 China School of Physical Science and Technology Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow UniversitySuzhou 215006 China 

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

年 卷 期：2019年第7卷第6期

页      面：642-646页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China(NSFC)(11504252,61701246) Natural Science Research of Jiangsu Higher Education Institutions of China(17KJB140014) Natural Science Foundation of Jiangsu Province(BK20150306) China Postdoctoral Science Foundation(2018M630596) Priority Academic Program Development of Jiangsu Higher Education Institutions Ministry of Education-Singapore(MOE)(2017-T1-001-239(RG91/17(S)),MOE2015-T2-1-145) 

主　　题：Routing emission waveguide 

摘      要：In this work, we present a multi-channel nonreciprocal waveguide, which is composed of a gyrotropic-bounded dielectric on the bottom and a plasmonic material on the top. The Lorentz reciprocity in the time-invariant system is broken when applying an external static magnetic field on the gyrotropic material. The nonreciprocal emission from the dipole source located in the center of the waveguide is observed in extended waveband channels. The proposed heterostructure serves as a photonic dichroism once the dielectric is replaced by a nonlinear *** associated second harmonic generated in the nonlinear process can be separated from the fundamental signal under proper magnetic field intensity. Our findings may provide significant guidance for designing nonreciprocal photonic devices with superiorities of a tunable waveband, multiple channels, and small footprint.