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提出并分析验证了一种光电混合结构的光时钟分频/倍频器系统,该系统通过光电转换后的反馈调制来实现光时钟信号的分频/倍频操作。分频过程类似于D触发器的输出信号反馈控制输入端信号的原理;在不更换器件的情况下,简单改变反馈顺序,还可以实现光时钟信号的倍频。从时/频域的角度分别讨论了分频/倍频的原理,在实验上验证了所提方案的可行性,从一路10GHz的光时钟信号出发分别得到了5GHz的光、电分频时钟信号和20GHz的光时钟倍频信号。该系统结构简单,性能稳定,对光信号的波长透明且无需光、电滤波,并同时具有光、电信号输出,因此可以方便地配合后续信号处理环节,具有良好的实用性。
An optoelectronic hybrid optical clock frequency demultiplexer / multiplier system is proposed and analyzed. This system achieves the optical frequency demultiplication / frequency doubling operation through the photoelectric conversion feedback modulation. The frequency division process is similar to the principle of the D flip-flop output signal feedback control input signal; simply changing the feedback sequence without changing the device can also achieve the multiplication of the optical clock signal. From the perspective of time / frequency domain, the principle of frequency division and frequency doubling are respectively discussed. The feasibility of the proposed scheme is verified experimentally. From the optical clock signals of 10 GHz, 5 GHz optical and electrical frequency division clock signals And 20GHz optical clock multiplication signal. The system has the advantages of simple structure, stable performance, transparency to the wavelength of the optical signal, no need of optical and electrical filtering, and the output of light and electric signals at the same time. Therefore, the system can conveniently cooperate with the subsequent signal processing and has good practicability.