【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.更多还原

【Abstract】 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 superGaussian 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.更多还原