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本文由多模光纤的WKB法结果分析α随Z变化的光纤的脉冲展宽,提出α随Z变化的光纤可以等效成α为常数的光纤这一设想,并导出其等效值α_(cq)。文中还讨论了接合α随Z变化的多模光纤模式色散的补偿问题。
In this paper, the WKB method of multimode fiber is used to analyze the pulse broadening of a fiber with varying α. It is proposed that the fiber with α changing with Z can be equivalent to α, and the equivalent value α_ (cq) . The paper also discusses the compensation of the mode-dispersion of multimode fiber with the variation of α with Z.