COBRA Research Institute, Eindhoven University of Technology, P.O. Box 513, NL-5600 Eindhoven, The Netherlands.
Opt Lett. 2010 Jan 1;35(1):37-9. doi: 10.1364/OL.35.000037.
We propose a self-clocking method based on in-band clock pilot insertion at the transmission data signal. The method can achieve clock recovery without the need for an ultrafast phase comparator and a phase-locked loop in the receiver. We demonstrate fast synchronization, low timing jitter, and a highly stable recovered clock from a 160 Gbit/s optical time-division multiplexing data signal after a 51 km fiber transmission. The recovered clock shows no patterning effect with a clock dynamic range of 10 dB for error-free operation of 160 to 40 Gbit/s demultiplexing with a power penalty of 1.1 dB.
我们提出了一种基于在传输数据信号中插入带内时钟导频的自时钟方法。该方法可以在接收器中无需超快相位比较器和锁相环的情况下实现时钟恢复。我们展示了从经过 51km 光纤传输后的 160Gbit/s 光时分复用数据信号中实现快速同步、低定时抖动和高度稳定的恢复时钟。恢复时钟在 10dB 的时钟动态范围内没有图案效应，对于 160 到 40Gbit/s 的解复用，其无差错操作的功率代价为 1.1dB。
