Modeling Nd^(3+)-Yb^(3+)-Tm^(3+)-Er^(3+) Codoped Telluride Glass Fiber for 0.4 to 2.0 μm Emission Spectra
Modeling Nd^(3+)-Yb^(3+)-Tm^(3+)-Er^(3+) Codoped Telluride Glass Fiber for 0.4 to 2.0 μm Emission Spectra作者机构：State Key Laboratory of Advanced Optical Communication Systems and Networks~ Department of Electronic Engineering Shanghai Jiao Tong University Shanghai 200240 China
出 版 物：《Journal of Shanghai Jiaotong university(Science)》 (上海交通大学学报（英文版）)
年 卷 期：2018年第23卷第3期
页 面：352-359页
核心收录：
基 金：the National Natural Science Foundation of China(Nos.60377023 and 60672017) the Program for New Century Excellent Talents in Universities(NCET) Shanghai Optical Science and Technology Project(No.05DZ22009)
主 题：telluride codoped fiber rare-earth-doped fiber optical communication
摘 要：The modeling of rare-earth-doped fiber amplifier is accomplished by utilizing the rate and propagation equations of distinct levels for a laser medium. A complex theoretical model for neodymium （Nd3＋）, erbium （Er3＋）, thulium （Tm3＋） and ytterbium （Yb3＋） codoped telluride glass fiber covering 0.4--2.0 μm emission spectra is presented. The emission spectra of Nd3＋-Er3＋-Tm3＋-yb3＋ codoped telluride fiber are realized with the excitation of both 808 and 980 nm lasers pumped at 500 mW. Numerical methods are used to calculate the emission spectra covering 0.4--2.0 μm. With the Nd3＋, Tm3＋ and Yb3＋ ion concentrations fixed at 2 x 1020 ion/m3, the Er3＋ ion concentration optimized to 8 x 10^20 ion/m3 and the fiber length spanning from 0.5 to 2 m, a peak amplified spontaneous emission （ASE） power of 19.8 mW is attainable, and a minimum ASE power of 7.96 mW can also be achieved. The analytical techniques and results indicate that when a telluride codoped fiber with suitable ion concentrations of Nd3＋, Er3＋, Tm3＋ and Yb3＋ is excited by both 980 and 808 nm pump lasers, 0.4-2.0 μm emission spectra are attainable for vast optical applications.
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