Zhao Jianye, Zhang Yaolin, Lu Haoyuan, Hou Dong, Zhang Shuangyou, Wang Zhong
IEEE Trans Ultrason Ferroelectr Freq Control. 2016 Jul;63(7):1022-7. doi: 10.1109/TUFFC.2015.2493725. Epub 2015 Oct 27.
We present a long-term chip scale stabilization scheme for optoelectronic oscillators (OEOs) based on a rubidium coherent population trapping (CPT) atomic resonator. By locking a single mode of an OEO to the (85)Rb 3.035-GHz CPT resonance utilizing an improved phase-locked loop (PLL) with a PID regulator, we achieved a chip scale frequency stabilization system for the OEO. The fractional frequency stability of the stabilized OEO by overlapping Allan deviation reaches 6.2 ×10(-11) (1 s) and ∼ 1.45 ×10 (-11) (1000 s). This scheme avoids a decrease in the extra phase noise performance induced by the electronic connection between the OEO and the microwave reference in common injection locking schemes. The total physical package of the stabilization system is [Formula: see text] and the total power consumption is 400 mW, which provides a chip scale and portable frequency stabilization approach with ultra-low power consumption for OEOs.
我们提出了一种基于铷相干布居囚禁（CPT）原子谐振器的光电振荡器（OEO）长期芯片级稳定方案。通过使用带有PID调节器的改进型锁相环（PLL）将OEO的单模锁定到（85）Rb 3.035 GHz CPT谐振上，我们实现了用于OEO的芯片级频率稳定系统。通过重叠阿伦偏差，稳定后的OEO的分数频率稳定性达到6.2×10^(-11)（1秒）和约1.45×10^(-11)（1000秒）。该方案避免了在普通注入锁定方案中OEO与微波参考之间的电子连接所引起的额外相位噪声性能下降。稳定系统的总体物理封装为[公式：见原文]，总功耗为400 mW，这为OEO提供了一种芯片级且便携式的超低功耗频率稳定方法。
