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提出了一种利用Fabry-Perot(FP)半导体激光器同步提取波长转换的分路光时钟的新方法,并对该方法进行了数值模拟和实验验证.光注入半导体激光器会产生非线性单周期振荡特性,利用交叉增益调制效应及对单周期振荡的微波锁频效应,可从光时分复用信号中提取出波长转换的分路光时钟.采用一个FP半导体激光器作为全光分路时钟提取及波长转换器,数值模拟实现了从波长为1555nm、速率为2×20Gb/s的光时分复用信号中提取出波长转换为1550nm、重复频率为20GHz的分路光时钟,实验完成了从波长为1550.24nm、重复频率为12.36GHz光脉冲信号中提取出相位噪声为-105dBc/Hz的波长为1545.91nm、重复频率6.18GHz的分频光时钟.此外还详细研究了注入光功率、波长失谐、FP激光器偏置电流及纵模选择对光时钟提取的影响,实验结果和数值模拟结果符合.该方法在光时分复用混合波分复用通信系统中实现全光解复用及波长路由有着重要的应用价值.
A novel method of synchronously extracting wavelength-converted shunt optical clock using Fabry-Perot (FP) semiconductor laser is proposed, and the numerical simulation and experimental verification of this method are carried out. The light injection into a semiconductor laser produces nonlinear single-period oscillation , The use of cross-gain modulation effect and the single-cycle oscillation of the microwave frequency locking effect can be extracted from the optical time-division multiplexing signal wavelength conversion shunt optical clock using an FP semiconductor laser as a full optical branch clock extraction and wavelength conversion The simulation results show that the wavelength-converted optical clock is 1550nm and the repetition frequency is 20GHz from the optical time-division multiplexed signal with the wavelength of 1555nm and the rate of 2 × 20Gb / s. The experiment completed from the wavelength of 1550.24nm , The frequency of which is 1545.91nm and the repetition frequency of 6.18GHz is extracted with the phase noise of -105dBc / Hz from the 12.36GHz optical pulse signal.Furthermore, the effects of injection optical power, wavelength detuning, FP laser Bias current and longitudinal mode selection on the optical clock extraction, the experimental results and numerical simulation results in line with this method in the optical time division multiplexing hybrid WDM System to achieve all-optical demultiplexing and wavelength routing has important application value.