摘要
针对掺铒聚合物光波导放大器(EDWA),提出了一种基于Douglas离散格式改进的有限差光束传播法(FD-BPM)的数值计算方法。对每一传输步长结合多能级速率方程计算出EDWA中光场传输强度分布,及掺铒光波导放大器的增益传输特性。设计并研究了掺铒聚合物通道波导和Y形分束器的放大增益特性。在掺铒聚合物直波导中,Er3+浓度为9.0×1025ions·m-3,输入信号和泵浦光功率分别为1μW和2mW,其增益为1.6dB/cm;在掺铒聚合物Y形分束器中,输出信号光分束比相等,并能实现无损耗分束。
Numerical analysis method based on finite difference beam propagation method modified by Douglas scheme is presented for the erbium doped polymer waveguide amplifiers （ EDWA ）. The gain properties of EDWA can be investigated in each step with the help of multi-level rate equations. As an example, erbium doped polymer channel waveguide and Y splitter are analyzed. The analysis shows that considerable gain levels, 1.6 dB/cm can be achieved in the channel EDWA with an erbium concentration of 9.0x 1025 ions.m^-3, signal power 1 μW and pump power 2 mW. A 3-dB Erbium complex doped polymer splitter can be achieved without loss.
出处
《光学与光电技术》
2005年第5期12-15,共4页
Optics & Optoelectronic Technology
基金
国家自然科学基金(60544001)资助项目
关键词
掺铒光波导放大器
光束传播法
聚合物
erbium doped waveguide amplifier
beam propagation method
polymer
