Department of Electrical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel.
Opt Lett. 2009 Oct 15;34(20):3113-5. doi: 10.1364/OL.34.003113.
We have developed a model to study nonlinear pulse propagation in a fiber Bragg grating written in an erbium-doped fiber amplifier. The saturation effect in such amplifiers depends on the accumulated energy along the pulse rather than on the pulse instantaneous power. We have shown that the gain saturation effect cannot be neglected when Bragg solitons are amplified by erbium-doped fiber amplifiers. The slow saturation of the amplifier limits the output pulse power, and it tends to split the amplified pulse into several pulses. We have shown that when the propagation velocity of the amplified pulses decreases, the amplifier gain per unit length increases.
我们已经开发出一种模型来研究掺铒光纤放大器中写入的光纤布拉格光栅中的非线性脉冲传播。这种放大器中的饱和效应取决于脉冲沿光纤传播所积累的能量，而不是脉冲的瞬时功率。我们已经表明，当布拉格孤子被掺铒光纤放大器放大时，增益饱和效应不能被忽略。放大器的缓慢饱和限制了输出脉冲功率，并且它倾向于将放大的脉冲分裂成几个脉冲。我们已经表明，当放大脉冲的传播速度降低时，单位长度的放大器增益增加。
