Spatiotemporal modeling of mid-infrared photoluminescence from terbium(Ⅲ) ion doped chalcogenide-selenide multimode fibers  

作　　者：Slawomir Sujecki Lukasz Sojka Zhuoqi Tang Dinuka Jayasuriya David Furniss Emma Barney Trevor Benson Angela Seddon 

机构地区：[1]Telecommunications and Teleinformatics Department,Wroclaw University of Science and Technology,Wroclaw,Poland [2]Mid-Infrared Photonics Group,George Green Institute for Electromagnetics Research,Faculty of Engineering,The University of Nottingham,Nottingham,UK

出　　处：《Journal of Rare Earths》2019年第11期1157-1163,共7页稀土学报（英文版）

基　　金：Project supported by the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant agreement No.665778(National Science Centre,Poland,Polonez Fellowship 2016/21/P/ST7/03666)

摘　　要：A numerical model was developed to study the time dynamics of photo luminescence emitted by Tb^3+doped multimode chalcogenide-selenide glass fibers pumped by laser light at approximately 2μm.The model consists of a set of partial differential equations(PDEs),which describe the temporal and spatial evolution of the photon density and level populations within the fiber.In order to solve numerically the PDEs a method of lines was applied.The modeling parameters were extracted from measurements and from data available in the literature.The numerical results obtained support experimental observations.In particular,the developed model reproduces the discrepancies that are observed between the photoluminescence decay curves obtained from different points along the fiber.The numerical analysis was also used to explain the source of these discrepancies.A numerical model was developed to study the time dynamics of photo luminescence emitted by Tb3+ doped multimode chalcogenide-selenide glass fibers pumped by laser light at approximately 2 μm.The model consists of a set of partial differential equations（PDEs）,which describe the temporal and spatial evolution of the photon density and level populations within the fiber.In order to solve numerically the PDEs a method of lines was applied.The modeling parameters were extracted from measurements and from data available in the literature.The numerical results obtained support experimental observations.In particular,the developed model reproduces the discrepancies that are observed between the photoluminescence decay curves obtained from different points along the fiber.The numerical analysis was also used to explain the source of these discrepancies.

关 键 词：CHALCOGENIDE glass fiber Numerical modeling PHOTOLUMINESCENCE MID-INFRARED light Rare earths 

分 类 号：TN2[电子电信—物理电子学]