②随着啁啾系数增大，透射谱带宽增大，透射率降低，滤波性能变坏；

The transmission spectrum bandwidth increases with the chirp parameter, while the transmission decreases, which leads to worse filter feature;

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啁啾系数的大小和符号对双曲正割脉冲光束空间强度的分布有不同的影响。

The sign of the chirp also affects the spatial intensity distribution of the ultrashort hyperbolic secant pulsed beams.

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系统的输出信号的偏振度还随着信号原始啁啾系数绝对值的增大而减小，但与啁啾系数的符号无关。

And it decreases also with the increase of absolute value of the initial pulse chirp coefficient, but has no relation with the sign of chirping coefficient.

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