Observation of dipolar transport in one-dimensional photonic lattices

作     者：Camilo Cantillano Luis Morales-Inostroza Bastián Real Santiago Rojas-Rojas Aldo Delgado Alexander Szameit Rodrigo A.Vicencio 

作者机构：Departamento de FísicaMSI-Nucleus on Advanced Opticsand Center for Optics and Photonics(CEFOP)Facultad de CienciasUniversidad de ChileSantiagoChile Center for Optics and Photonics and MSI-Nucleus on Advanced OpticsUniversidad de ConcepciónCasilla 160-C ConcepcionChile Institute for PhysicsUniversity of RostockD-18059 RostockGermany 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2017年第62卷第5期

页      面：339-344页

核心收录：

学科分类：08[工学] 0803[工学-光学工程] 

基　　金：supported in part by Program ICM(RC130001) FONDECYT(1151444) the Deutsche Forschungsgemeinschaft(462/6–1,SZ 276/7–1,SZ276/9–1,BL 574/13–1) the German Ministry of Education and Research(Center for Innovation Competence Program,03Z1HN31) 

主　　题：Photonic lattices Waveguide arrays Wave propagation Integrated optics 

摘      要：We experimentally study the transport properties of dipolar and fundamental modes on one dimensional(1D) coupled waveguide arrays. By carefully modulating a wide optical beam, we are able to effectively excite dipolar or fundamental modes to study discrete diffraction(single-site excitation) and gaussian beam propagation(multi-site excitation plus a phase gradient). We observe that dipolar modes experience a larger spreading area due to an effective larger coupling constant, which is found to be more than two times larger than the one for fundamental modes. Additionally, we study the effect of non-diagonal disorder and find that while fundamental modes are already trapped on a weakly disorder array, dipoles are still able to propagate across the system.