Ultra-flat dispersion in an integrated waveguide with five and six zero-dispersion wavelengths for mid-infrared photonics

作     者：Yuhao Guo Zeinab Jafari Lijuan Xu Changjing Bao Peicheng Liao Guifang Li Anuradha M.Agarwal Lionel C.Kimerling Jurgen Michel Alan E.Willner Lin Zhang 

作者机构：Key Laboratory of Opto-electronic Information Technical Science of Ministry of Education and Key Laboratory of Integrated Opto-electronic Technologies and Devices in TianjinSchool of Precision Instruments and Opto-electronics EngineeringTianjin UniversityTianjin 300072China School of Computer and Electrical EngineeringShiraz UniversityShirazFarsIran School of Electronic EngineeringTianjin University of Technology and EducationTianjin 300222China Department of Electrical EngineeringUniversity of Southern CaliforniaLos AngelesCalifornia 90089USA College of Optics and PhotonicsCREOL and FPCEUniversity of Central FloridaOrlandoFlorida 32816USA Department of Materials Science and EngineeringMassachusetts Institute of TechnologyCambridgeMassachusetts 02139USA 

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

年 卷 期：2019年第7卷第11期

页      面：1279-1286页

核心收录：

学科分类：0808[工学-电气工程] 080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China(61775164 61225005 61775165) 

主　　题：waveguide dispersion flat 

摘      要：We propose a new type of dispersion flattening technology, which can generate an ultra-flat group velocity dispersion profile with five and six zero-dispersion wavelengths(ZDWs). The dispersion value varies from-0.15 to 0.35 ps/(nm·km) from 4 to 8 μm, which to the best of our knowledge is the flattest one reported so far, and the dispersion flatness is improved by more than an order of magnitude. We explain the principle of producing six ZDWs. Mode distribution in this waveguide is made stable over a wide bandwidth. General guidelines to systematically control the dispersion value, sign, and slope are provided, and one can achieve the desired dispersion by properly adjusting the structural parameters. Fabrication tolerance of this waveguide is also examined.