这表明相位噪声功率谱密度随外腔长度而周期性地漂移，且功率谱密度的峰值随外部反馈耦合率而发生很大的变化。

It is shown that the phase noise spectrum density shift periodicity with the length of external cavity and the peak value of power spectrum density varies considerably with the feedback coupling rate.

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光栅参数变化产生的透射光谱的漂移是由于其对这种类F—P腔长度的调制。

The transmission spectra drift from the varying of the gratings parameters is due to its modulation to the length of the Fabry-Perot-like.

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