概括
这项研究引入了一个强大的光纤时间传输系统,尽管光信号噪声比 (OSNR) 降低,但仍然保持稳定性. 这种新的方法确保了长距离的精确时间同步,这对于先进的时间频率应用至关重要.
科学领域:
- 物理 物理学 物理
- 光学工程是指光学工程.
- 计量学 计量学 计量学
背景情况:
- 光纤时间传输系统面临的挑战是光信号噪声比率 (OSNR) 随着距离的变化而恶化.
- 噪声增加会影响信号对噪声比率 (SNR) 和系统稳定性,限制宽带时间信号的过效率.
研究的目的:
- 开发一个光纤时间传输系统,抵御OSNR退化.
- 为了增强收到的SNR,并产生高精度的时间脉冲与最小的动.
主要方法:
- 实现一个前向传输的频率 (FTF) 信号.
- 集成一个相锁脉冲发生器 (PLPG).
- 在高达960公里的实验室光纤链路上测试系统性能.
主要成果:
- 在经过测试的距离上,在10皮秒 (ps) 以下的短期稳定性得到了证明.
- 通过理论模拟,通过短期稳定性确认系统对OSNR降解的不敏感性.
- 随着传输距离的增加和OSNR的减少,没有观察到显著的性能恶化.
结论:
- 拟议的系统为光纤时间传输提供了卓越的性能和抗噪能力.
- 这项技术对未来的地面时间频率系统显著有前途,这些系统需要高精度和稳定性.
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