Er与Yb共掺波导放大器的ADI-FDTD数值模拟  

Numerical Simulation of Erbium-Ytterbium Co-doped Waveguide Amplifiers by ADI-FDTD

作　　者：陈海燕[1] 戴基智[1] 黄绣江[1] 刘永智[1] 

机构地区：[1]电子科技大学光电信息学院宽带光纤传输与通信系统技术国家重点实验室

出　　处：《计算物理》2003年第5期443-446,共4页Chinese Journal of Computational Physics

摘　　要：　提出了一种新的简单的数值计算方法模拟Er与Yb共掺磷酸盐玻璃波导放大器(EYCDWA)的增益特性.该方法是基于交变隐式差分方向的时域有限差分法(ADI FDTD)的迭代方法,用ADI FDTD计算波导中的光场强度分布,用迭代法研究光波的传输方程.数值结果表明,增加光波导长度和提高Er3+浓度是提高EYCD WA增益的两种重要途径,Yb3+起能量传递的作用,Er Yb的比率取1～4较好.A new and simple numerical computational method simulating the gain characteristics of erbium and ytterbium co\|doped phosphate glass waveguide amplifier(EYCDWA)is presented. This algorithm is a combination of the iterative procedure and the Finite\|Differences Time\|Domain based on Alternating\|direction Implicit Method(ADI\|FDTD), using ADI\|FDTD calculating the normalized field intensity distribution of pump and signal and an iterative procedure studying the power propagation equations of the pump and signal. Numerical results demonstrate that the increase of the length and Er3+ concentration is two main approaches to improve the gain of EYCDWA, Yb3+ plays an energy transform role and 1～4 ratio of Yb/Er is better.

关 键 词：ADI-FDTD 数值模拟 光波导放大器 光场强度分布 光通信 时域有限差分法 迭代法 增益特性 磷酸盐玻璃 

分 类 号：TN722[电子电信—电路与系统] TN929.1