It results that the pulse deformation is caused by group delay of different modes.
得出多模波导脉冲畸变主要是模式不同的群延迟造成的。
We can obtain much higher birefringence and larger difference of group time delay by choosing different structure parameter of fibers.
改变光子晶体光纤的结构参数，将获得更高的双折射和更大的群时延差。
We can obtain much higher birefringence and larger difference of group time delay by choosing different structure parameter of fibers.
改变光子晶体光纤的结构参数，将获得更高的双折射和更大的群时延差。
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