Based on the simple and effective modle of Raman fiber amplifier, Raman gains under different parameters are computed with the help of average power and shooting method. 摘要藉助簡化的拉曼光纖放大器數學模型，利用平均功率法和打靶法分別計算出了不同參數下多波長泵浦的拉曼增益。
The encircled-power method is introduced to define the beam width and real focal plane of focused sinh-Gaussian beams, thus their focal shift can be determined. 使用環圍功率法定義束寬和實際焦面，由此可以決定聚焦雙曲正弦高斯光束的焦移。
