Chen Yu, Zuo Pengcheng, Shi Taixia, Chen Yang
Opt Express. 2020 Oct 12;28(21):30797-30809. doi: 10.1364/OE.403622.
A photonic-based reconfigurable microwave frequency divider using two cascaded dual-parallel Mach-Zehnder modulators (DP-MZMs) is proposed. The first DP-MZM is driven by the input microwave signal, whereas the second DP-MZM is incorporated in an optoelectronic oscillator (OEO) loop and driven by the feedback signal. By properly setting the working conditions of the two DP-MZMs, the frequency of the input microwave signal is divided and the frequency-divided signal will oscillate in the OEO loop, with a tunable frequency-division factor determined by the bias conditions of the DP-MZMs. An experiment is performed. The reconfigurable microwave frequency divider is demonstrated with a frequency-division factor of 1.5, 2.5, 2, or 3, and the phase noise of the frequency-divided signals is also evaluated, which has an improvement of 3.22, 7.60, 5.80, or 9.49 dB at 10-kHz frequency offset, respectively, compared with that of the input microwave signals.
提出了一种基于光子的可重构微波分频器，该分频器采用两个级联的双平行马赫-曾德尔调制器（DP-MZM）。第一个DP-MZM由输入微波信号驱动，而第二个DP-MZM集成在一个光电振荡器（OEO）环路中，并由反馈信号驱动。通过适当设置两个DP-MZM的工作条件，输入微波信号的频率被分频，并且分频后的信号将在OEO环路中振荡，其可调分频因子由DP-MZM的偏置条件决定。进行了一项实验。展示了具有1.5、2.5、2或3分频因子的可重构微波分频器，并对分频信号的相位噪声进行了评估，与输入微波信号相比，在10 kHz频率偏移处分别有3.22、7.60、5.80或9.49 dB的改善。
