Theoretical Modelling of Cascaded Er3+-Doped, Tm3+-Doped and Nd3+-Doped Fibers for 0.4 to 2.0 μm Emission Spectra  

作　　者：NKONDE Sampa JIANG Chun NKONDE Sampa;姜淳(State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering,Shanghai Jiao Tong University)

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks,Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Journal of Shanghai Jiaotong university(Science)》2019年第6期754-762,共9页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China(Nos.60377023 and 60672017);the Program for New Century Excellent Talents in Universities(NCET);the Shanghai Optical Science and Technology Project(No.05DZ22009)

摘　　要：We present a cascaded system designed with Er^3+-Doped,Tm^3+-doped and Nd^3+-doped fibers to realize amplified spontaneous emission(ASE)spectra covering 0.4—2.0μm.The system is excited with a pump laser emitting 808 nm photons with 500 m W pump power.The emission spectra of the cascaded system covering0.4—2.0μm are realized with the Er^3+,Tm^3+and Nd^3+ion doping densities optimized to 8×10^19,2×10^20 and8×10^20 ion/m^3,respectively,and the fiber length optimized to 1 m.Numerical methods reveal that the peak ASE power for the cascaded system can reach 20.9 m W.A minimum ASE power of 4.39 m W is attainable.Using numerical calculations and analytical techniques,we provide a detailed insight into optimized Er^3+-doped,Tm^3+-doped and Nd^3+-doped fiber lengths and their doping concentrations for ASE power spectra covering 0.4—2.0μm.We believe that the cascaded system can potentially provide significant applications in various optical fields which include but not limited to wavelength-division multiplexing,various optical communications and other salient medical imaging processes.We present a cascaded system designed with Er3+-doped, Tm3+-doped and Nd3+-doped fibers to realize amplified spontaneous emission（ASE） spectra covering 0.4—2.0 μm. The system is excited with a pump laser emitting 808 nm photons with 500 m W pump power. The emission spectra of the cascaded system covering0.4—2.0 μm are realized with the Er3+, Tm3+and Nd3+ion doping densities optimized to 8 × 1019, 2 × 1020 and8 × 1020 ion/m3, respectively, and the fiber length optimized to 1 m. Numerical methods reveal that the peak ASE power for the cascaded system can reach 20.9 m W. A minimum ASE power of 4.39 m W is attainable. Using numerical calculations and analytical techniques, we provide a detailed insight into optimized Er3+-doped, Tm3+-doped and Nd3+-doped fiber lengths and their doping concentrations for ASE power spectra covering 0.4—2.0 μm.We believe that the cascaded system can potentially provide significant applications in various optical fields which include but not limited to wavelength-division multiplexing, various optical communications and other salient medical imaging processes.

关 键 词：cascaded fiber amplified spontaneous emission(ASE) rare-earth doped fiber 

分 类 号：TN929.11[电子电信—通信与信息系统]