中文摘要：

制备了掺铕螯合物的阶跃型聚合物光纤.根据Judd-Ofelt （J-O） 理论,从铕螯合物Eu（DBM）3掺杂的聚甲基丙烯酸甲酯（PMMA）的发射光谱获得了光学跃迁的J-O参数Ω2、Ω4（Ω2=15.71×10^-20cm^2,Ω4=0.24×10^-20cm^2）.用J-O参数计算了铕离子激发态（5D0）的辐射跃迁几率（513.97s^-1）和辐射寿命（1945.6μs）,同时计算了^5D0→^7FJ跃迁的受激发射截面σij和荧光分支比β,分析表明,Eu（DBM）3掺杂的PMMA可望用于聚合物光纤放大器和激光器.

英文摘要：

An Eu-chelate-doped step-index polymer optical fiber is fabricated. Based on Judd-Ofelt （J-O） theory,the J-O parameters are calculated to be Ω2=15.71×10^-20cm^2,Ω4=0.24×10^-20cm^2 from the emission spectrum of Eu（DBM）3 doped polymethyl methacrylate （PMMA）. The J-O parameters have been used to calculate the radiative transition probability （513.97s^-1） and radiative lifetime （1945.6μs） of the ^5D0 exciting state. The stimulated emission cross-sectlons σij and the fluorescence branch rations β for the ^5D0→^7FJ. transitions are also calculated. The analysis reveals that Eu（DBM）3 doped PMMA is promising for use in polymer optical fiber amplifier and laser.