新型内包层形状对掺铥双包层光纤吸收效率的影响研究  

Study on the Effect of New Inner Cladding Shape on Absorption Efficiency of Thulium-Doped Double-Clad Fiber

作　　者：王郡婕 王成 杨艳妮 过阳阳 Wang Junjie;Wang Cheng;Yang Yanni;Guo Yangyang(Physics Teaching and Research Section,Medical Technology College,Xi'an Medical University,Xi'an,Shanxi 710021,China)

机构地区：[1]西安医学院医学技术学院物理教研室,陕西西安710021

出　　处：《激光与光电子学进展》2021年第17期227-231,共5页Laser & Optoelectronics Progress

基　　金：陕西省教育厅专项科研计划(19JK0760);陕西省自然科学基础研究计划项目(2019JM-514)。

摘　　要：为进一步提高掺铥双包层光纤(DCF)激光器的输出功率,从提高DCF对泵浦光的吸收效率出发,数值模拟了具有不同纤芯直径和内包层形状的DCF的泵浦吸收特性。模拟结果表明,对于具有不同纤芯直径的新型内包层DCF,随着反射次数的增加,其泵浦吸收效率趋于100%;对于具有不同内包层形状的DCF,新型内包层DCF的泵浦吸收效率最高。实验中,选择正六边形内包层和新型内包层掺铥DCF为工作物质,两种掺铥DCF激光器的输出功率分别为13.2 W和14.8 W,斜率效率分别为31%和35%。新型内包层掺铥DCF激光器的输出功率比正六边形内包层掺铥DCF激光器提高了12.1%,这表明新型内包层DCF更有利于实现高效的泵浦吸收。In order to improve the output power of thulium-doped double-clad fiber(DCF)lasers,starting from optimizing the absorption efficiency of DCF to the pump light,pump absorption characteristics of fibers with different core diameters and inner cladding shapes are numerically simulated.The simulation results show that the pump absorption efficiency tends to 100%when the reflection times increased for the new inner clad DCFs with different core diameters.For DCFs with different inner cladding shapes,the absorption efficiency of the new inner cladding DCF is the highest.In the experiment,regular hexagonal inner cladding thulium-doped DCF and new inner cladding thulium-doped DCF are selected as the working substances.The output power of the two thulium-doped DCF lasers is 13.2 W and 14.8 W,respectively.The slope efficiency of the two thulium-doped DCF lasers is 31%and 35%,respectively.The output power of the new inner cladding thulium-doped DCF laser is 12.1%higher than that of regular hexagon inner cladding thulium-doped DCF laser,which indicates that the new inner cladding DCF is more conducive to achieve efficient pump absorption.

关 键 词：光纤光学 光纤性质 新型内包层 掺铥光纤 吸收效率 

分 类 号：TN248[电子电信—物理电子学]