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中文摘要：
在考虑二阶群色散的情况下，从理论上推导了超高斯脉冲频谱的解析表达式．该式表明：超高斯脉冲在光纤中传输时群速度色散（GVD）效应并不改变脉冲频谱，只改变每个频谱分量的相位；超高斯脉冲的频谱只与脉形（由参数m决定）和初始啁啾有关．以解析式为基础绘制的频谱图表明：超高斯脉冲频谱的最大特点是具有较大的底座，且出现了旁瓣，因此，有更宽的频谱宽度与之对应．
英文摘要：
The resolution equation of the spectra of super-Gaussian pulses was theoretically derived by considering second-order group dispersion. The equation showed： Because of second-order group dispersion, the spectra of pulses don＇t vary but the phase of every spectrum varies when super-Gaussian pulses transmit in the optical fiber. The spectra of super-Gaussian pulses was showed to be related to the shape of pulses decided by the parameter m and initial chirp. It was found that the spectra of super-Gaussian pulses have the pedestal, side tails and with much broader, corresponding spectra.
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