Design, fabrication, and characterization of a highly nonlinear few-mode fiber  

作　　者：Jitao Gao Elham Nazemosadat Chen Yang Songnian Fu Ming Tang Weijun Tong Joel Carpenter Jochen Schroder Magnus Karlsson Peter A.Andrekson 

机构地区：[1]Wuhan National Laboratory for Optoelectronics,and School of Optics and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China [2]Photonics Laboratory,Department of Microtechnology and Nanoscience,Chalmers University of Technology,Gothenburg 41296,Sweden [3]State Key Laboratory of Optical Fiber and Cable Manufacture Technology,Yangtze Optical Fiber and Cable Joint Stock Limited Company(YOFC),Wuhan 430073,China [4]School of Information Technology and Electrical Engineering,The University of Queensland,Brisbane,QLD 4072,Australia

出　　处：《Photonics Research》2019年第11期1354-1362,共9页光子学研究（英文版）

基　　金：National Key R&D Program of China(2018YFB1801002);National Natural Science Foundation of China(61711530043);Fundamental Research Funds for the Central Universities(2018JYCXJJ024);Swedish Research Council(VR)(2015-00535,2017-05157);Swedish Foundation for International Cooperation in Research and Higher Education(STINT)(CH2016-6754)

摘　　要：We present the design, fabrication, and characterization of a highly nonlinear few-mode fiber(HNL-FMF) with an intermodal nonlinear coefficient of 2.8 W · km-1, which to the best of our knowledge is the highest reported to date. The graded-index circular core fiber supports two mode groups(MGs) with six eigenmodes and is highly doped with germanium. This breaks the mode degeneracy within the higher-order MG, leading to different group velocities among corresponding eigenmodes. Thus, the HNL-FMF can support multiple intermodal four-wave mixing processes between the two MGs at the same time. In a proof-of-concept experiment, we demonstrate simultaneous intermodal wavelength conversions among three eigenmodes of the HNL-FMF over the C band.We present the design, fabrication, and characterization of a highly nonlinear few-mode fiber(HNL-FMF) with an intermodal nonlinear coefficient of 2.8 W · km-1, which to the best of our knowledge is the highest reported to date. The graded-index circular core fiber supports two mode groups(MGs) with six eigenmodes and is highly doped with germanium. This breaks the mode degeneracy within the higher-order MG, leading to different group velocities among corresponding eigenmodes. Thus, the HNL-FMF can support multiple intermodal four-wave mixing processes between the two MGs at the same time. In a proof-of-concept experiment, we demonstrate simultaneous intermodal wavelength conversions among three eigenmodes of the HNL-FMF over the C band.

关 键 词：FIBER MODE NONLINEAR 

分 类 号：TN2[电子电信—物理电子学]