Unidirectional reflection from an integrated“taiji”microresonator

作     者：A.CALABRESE F.RAMIRO-MANZANO H.M.PRICE S.BIASI M.BERNARD M.GHULINYAN I.CARUSOTTO L.PAVESI 

作者机构：Laboratoire de Physique de l’Ecole Normale SuperieureENSParis Sciences et LettresCNRSUniversitéde Paris75005 ParisFrance Instituto de Tecnologı´a Quı´mica(CSIC-UPV).Av.de los Naranjos46022 ValenciaSpain School of Physics and AstronomyUniversity of BirminghamEdgbastonBirmingham B152TTUK Nanoscience LaboratoryDipartimento di FisicaUniversity of TrentoVia Sommarive 1438123 Povo(TN)Italy Centre for Materials and MicrosystemsFondazione Bruno KesslerVia Sommarive 1838123 Povo(TN)Italy INO-CNR BEC Center and Department of PhysicsUniversity of TrentoVia Sommarive 1438123 PovoItaly 

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

年 卷 期：2020年第8卷第8期

页      面：1333-1341页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：Provincia Autonoma di Trento,Italy(Grandi Progetti SIQURO) H2020-FETFLAG-2018-2020 Quantum Flagship(820392“PhoQuS”) FET-Open(n.737017“MIR-BOSE”) Spanish Ministry of Economy,Industry and Competitiveness(MINECO)(TEC2015-74405-JIN) European Commission(Marie Skłodowska–Curie Action,Grant No.656093“SynOptic”) Royal Society(UF160112,RGF/EA/180121,and RGF/R1/180071) 

主　　题：hence negligible crossover 

摘      要：We study light transmission and reflection from an integrated microresonator device,formed by a circular microresonator coupled to a bus waveguide,with an embedded S-shaped additional crossover waveguide element that selectively couples counter-propagating modes in a propagation-direction-dependent *** overall shape of the device resembles a“taijisymbol,hence its *** Lorentz reciprocity is preserved in transmission,the peculiar geometry allows us to exploit the non-Hermitian nature of the system to obtain high-contrast unidirectional reflection with negligible reflection for light incident in one direction and a significant reflection in the opposite direction.