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研究了偏振相关的集总放大方案对非线性脉冲传输特性的影响.提出利用非线性增益的偏振相关集总放大方案去抑制脉冲偏振成分的分裂—融合碰撞行为和由随机双折射引起的线性色散波.数值计算结果表明:采用具有非线性增益的偏振相关集总放大方案,经过第一个放大器后脉冲的差分群时延变小,这说明了周期性的脉冲分裂—融合碰撞行为得到了有效的抑制.并且,随后的放大器因不同偏振相关的增益将促使脉冲偏振成分要么以呼吸振荡行为出现,要么以时域完全捕获行为出现.
The effects of polarization-dependent lumped amplification scheme on the nonlinear pulse propagation characteristics are investigated.The polarization-dependent lumped amplification scheme with nonlinear gain is proposed to suppress the split-fusion collision behavior of the pulse polarization components and the linear dispersion caused by random birefringence Waves.The numerical results show that using the polarization-dependent lumped solution with nonlinear gain, the differential group delay of the pulse after the first amplifier becomes smaller, which shows that the periodic pulse splitting-fusion collision is effective Furthermore, subsequent polarization-dependent gain of the amplifier will cause the pulsed polarization component to either appear as a respiratory oscillation or appear as a complete acquisition in time-domain.