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根据光脉冲在双折射色散阶跃光纤中调制不稳定性,研究了双折射色散阶跃光纤中调制不稳定性增益谱随传输距离的变化关系。结果表明:在弱双折射色散阶跃光纤和强双折射色散阶跃光纤中,利用调制不稳定性增益谱随传输距离的变化关系可分离和提取THz脉冲。
According to the modulation instability of light pulse in birefringence dispersive stepped fiber, the relationship between modulation gain gain spectrum and transmission distance in birefringent dispersion step fiber is studied. The results show that the THz pulse can be separated and extracted in the weak birefringence dispersion step fiber and the strong birefringence dispersion step fiber by using the relationship between modulation instability gain spectrum and transmission distance.