大模场掺镱双包层光子晶体光纤内包层新型结构研究  

Preparation of Yb^(3+) Doped Core Material and Study on The Inner Clad Structure of Large Mode Area Double Clad Photonic Crystal Fiber

作　　者：谭芳[1,2] 于凤霞[1] 王玲玲[1] 王丽丽[2] 卢静娟[1] 

机构地区：[1]长春理工大学材料工程学院,吉林长春130022 [2]长春大学理学院,吉林长春130022

出　　处：《发光学报》2014年第5期589-594,共6页Chinese Journal of Luminescence

基　　金：国家自然科学基金(51302019);吉林省科技发展计划(09YJ03)资助项目

摘　　要：制备了掺镱多组分硅酸盐光子晶体光纤纤芯材料。其折射率为1.586,有效荧光半高宽为85.3 nm,荧光寿命为1.30 ms。分析了光纤结构参数对光子晶体光纤的归一化频率(单模截止条件)、数值孔径、有效模面积、非线性效应和限制损耗等参数的影响。设计了以该材料为纤芯,内包层为八边形、五层空气孔的新型结构光子晶体光纤。用有限元法对该光子晶体光纤性能进行了数值模拟。结果表明,该光纤有效模场面积为1 150μm2;当空气孔直径为21.6μm、孔间距为60μm时,内包层数值孔径达到0.45。Yb3+ doped multicomponent silicate used as photonic crystal fiber core material was prepared. Its refractive index is 1.586, efficient half width of the fluorescent spectrum band is 85.3 nm, and fluorescence lifetime is 1.30 ms. The influences of structural parameter on the normalized frequency (single mode cutoff condition), numerical aperture, effective mode area, nonlinear effect, and limit loss of the photonic crystal fiber were investigated. Using Yb3+ doped silicate as fiber core material, an octagonal and five layer air hole structure based photonic crystal fiber was designed. The performances of the photonic crystal fiber were digitally simulated using the limited element method. The calculated results indicate that the effective mode field area is 1 150 μm2 and the numerical aperture of the inner clad is 0.45 when the aperture of the air hole is 21.6 μm and the space between the air holes is 60 μm.

关 键 词：纤芯材料 结构参数 有效模场 数值孔径 

分 类 号：TD324[矿业工程—矿井建设]