When the frequency is higher than the cut-off frequency, as the frequency increases, voltage amplification factor will be reduced, thus the circuit has a "low-pass" characteristics.
当频率高于截止频率时，随着频率的升高，电压放大倍数将降低，由此电路具有“低通”的特性。
The results show that this amplifier has a good amplification effect on the pulse signal at a low repetition frequency.
结果表明，本脉冲光纤放大器对低频脉冲信号有很好的放大效果。
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