从非均匀分布的信号脉冲中提取基频时钟脉冲

提出从接收到的光信号脉冲串中提取光基频时钟的方案。此方案的要点是 :首先在光脉冲的复用过程中人为地使复用后相邻码的时间间隔不相等 ,即复用为非均匀码。其次 ,在接收端利用光纤环形锁模激光器提取与复用前原信号同频率的时钟脉冲。实验的初步结果及理论分析表明所提出的时钟提取方案是可行的。

Base-frequency Clock Recovery from Non-uniform Optical Signal Pulses

A novel all optical scheme for extracting clock pulses with basic frequency from the receiving non uniform OTDM optical signal is proposed. The key point is: in the OTDM signal, the space between two pulses is made unequally by artificial means. At the receiver side the base frequency pulses can be otbained when such signal injects into a mode locked fiber laser. The feasibility of this scheme is proved by experiment.