基于不同Q值F-P滤波器的40GHz全光帧时钟提取

对用不同Q值的F-P滤波器提取40 GHz光帧时钟的方案进行了实验比较.实验表明,用高Q值F-P滤波器提取的帧时钟信号好,但是建立、消失时间长;用低Q值F-P滤波器提取的帧时钟,信号质量较差,但可以保证帧时钟的快速建立和快速消失.实验还表明,半导体放大器(SOA)的自增益调制效应(SGM)可以有效地提高时钟的建立速度,对于时钟信号的抖动也有一定程度的改善.抖动的改善与滤波器的Q值有直接的关系.用上述方案对40 GHz的帧信号进行了全光帧时钟提取,得到了建立时间为15个信号周期,消失时间为115个信号周期,抖动为2.35 ps的帧时钟信号.

Experimental research on 40 GHz all-optical packet clock recovery based on F-P filters with variable finenesses

The schemes of all-optical packet clock recovery based on the Fabry-Perot filters with variable finess at 40 GHz are demonstrated.The experimental results as follows:The usage of the F-P with the higherQ benefits the quality of the signals but leads to that both of establishing and vanishing of the packet clock take long time;on the contrary,the usage of the F-P with the lowerQ makes the packet establish and vanish quickly but induces the degradation of the signals.It is also presented that the self gain-mo...