The effect of the light source spectral distribution can be cancelled out with the help of the zeroorderspectrum of the Fourier transform of the interferogram.
利用干涉图的零频分量消除光源谱分布的影响，获得两束干涉光的振幅比；
2
For a given dispreading distance, the widths of the two spectrum regions increase until overlay when second-order dispersion approaches zero.
对给定的传输距离，随着光纤向零色散附近靠近，两个频谱区谱宽增加直到相互重叠。
3
The mechanism of the signal spectrum distortion because of DAC's zero-order holding is analysed.