Derection and power spectrum of an incident plane wave are estimated by evaluating amplitude and rate of phase change of the corresponding sinusoidal wave.
从相应正弦波求得的振幅和相位变化率可以检测平面波的入射方向和功率谱。
In this paper, a method evaluating small signal gain spectrum of optical fiber amplifier only using a small power broadband light source was proposed.
提出了一种用小功率宽带光源较精确测量光纤放大器小信号增益谱的方法。
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