From our analysis, we know that PSA can compensate fiber dispersion, either positive dispersion or negative dispersion.
通过分析可知，PS A对光纤的正色散和负色散都有一定的补偿效果。
The experimental results observed in passively mode-locked Er-doped fiber laser with positive dispersion are analyzed theoretically.
对观察到的正色散腔被动锁模掺铒光纤激光器的实验现象进行了理论分析。
But for the influence of self phase modulation, the ISI limited distance of positive dispersion is much longer than that of negative dispersion.
但是，由于非线性自相位调制效应的影响，在其它参数相同条件下，正色散时的ISI限制距离比负色散时要长得多。
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