中文摘要：

制备了掺钐螯合物的阶跃型聚合物光纤，研究了螯合物Sm（DBM）3（TOPO）2掺杂的聚甲基丙烯酸甲酯（PMMA）的吸收光谱、激励光谱和发射光谱．根据Judd-Ofelt（J-O）理论，从吸收光谱获得了光学跃迁的强度参数Q2、Q4、Q6分别为18．53×10^-20cm^2、2．87×10^-20cm^2、3．71×10^-20cm^2．用光学强度参数计算了激发态。^4G5/2的辐射跃迁几率（536．19s^-1）和辐射寿命（1865μs）；同时，计算了。^4G5/2→^6Hr跃迁的受激发射截面和。^4G5/2→^6Fr、^6Hr的荧光分支比．分析表明，Sm（DBM）3（TOPO）2掺杂的PMMA可望用于聚合物光纤激光器和放大器．

英文摘要：

A Sin-chelate-doped step-index polymer optical fiber was fabricated. Optical absorption, excitation and emission spectra of Sm^3＋ ions in Sm（DBM）3（TOPO）2-doped Polymethyl Methacrylate （PMMA） were studied. Based on Judd-Ofelt （J-O） theory, the optical intensity parameters Q2, Q4 and Q6 calculated were 18.53×10^-20cm^2, 2.87×10^-20cm^2, and 3.71 ×10^-20cm^2, respectively from the absorption spectrum. The optical intensity parameters were used to calculate the total radiative transition rate （536.19s^-1） and radiative lifetime （1865μs） of the ^4G5/2 exciting state. The stimulated emission cross-sections for the ^4G→^6Hr, and the fluorescence branch ratios for the ^4G→^6Hr,^6Hr, transitions were also calculated. Analysis result reveals that Sm（DBM）3（TOPO）2-doped PMMA is promising for application in polymer optical fiber laser and amplifier.