概括
研究人员开发了一个更简单的光子微波振荡器PRESTO,使用更少的组件. 这种高性能,稳定的振荡器为各种先进应用提供了更容易获得的解决方案.
科学领域:
- 光子学 是一个光子学.
- 微波工程 微波工程
- 光学物理学的光学物理学
背景情况:
- 光子微波振荡器对于电信和雷达等应用至关重要,原因是高频率的低相噪声.
- 当前最先进的光子振荡器使用复杂,重和昂贵的光学频率与多个稳定环.
- 这些系统带来了运营挑战和高维护成本,限制了它们的广泛采用.
研究的目的:
- 推出一种简化且高性能的光子微波振荡器.
- 为了减少与现有的光子振荡器技术相关的复杂性和成本.
- 为了展示一个紧而可靠的解决方案,用于生成稳定的微波信号.
主要方法:
- 开发一个光子引用的极其稳定的振荡器 (PRESTO).
- 采用简化的架构,包括 femtosecond 激光器,光纤延迟元件和脉冲定时探测器.
- 阶段噪声和定时动性能的表征.
主要成果:
- 普雷斯托实现了极好的相位噪声水平:1kHz时达到-125dBc/Hz,1kHz时达到-145dBc/Hz,10kHz时达到<-160dBc/Hz,100kHz时达到>100kHz.
- 在 [100 Hz-1 MHz] 带宽上显示的集成定时动仅为 2 fs RMS.
- 与传统光子振荡器相比,该系统的复杂性大大降低.
结论:
- 普雷斯托为传统光子微波振荡器提供了一种简化,经济高效和高性能的替代方案.
- 紧的设计和强大的性能使得PRESTO适合缩小和简化先进系统.
- 这项技术为在不同领域更广泛地实施稳定光子微波信号铺平了道路.
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