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采用两次光调制技术将非归零(NRZ)码数据转换成归零(RZ)码光信号后,利用光纤参量振荡器(FOPO)结构实现了较低光功率抽运下的参量波长转换和时钟提取功能。实验表明,对于波长转换间隔为1.6nm的10Gbit/s时钟提取,优化的输入抽运光功率范围是8～14dBm;当输入信号的幅度抖动和相位抖动分别大于2.28mV和3.5ps时,该时钟提取系统可实现抖动抑制功能,其输入/输出抖动转移曲线斜率约为0.29和0.16。
After twice NRZ code data is converted into zero return (RZ) code optical signal, the parametric wavelength conversion under low optical power pumping is realized by the optical fiber parametric oscillator (FOPO) Clock extraction function. Experiments show that for a 10Gbit / s clock extraction with a wavelength conversion interval of 1.6nm, the optimized input pump power range is 8 ~ 14dBm; when the amplitude and phase jitter of the input signal are greater than 2.28mV and 3.5ps respectively, The extraction system achieves jitter suppression with a slope of the input / output jitter transfer curve of about 0.29 and 0.16.