相关实验视频
Updated: Jan 12, 2026

06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
9.6K
概括
本研究证明了使用光学频 (OFC) 进行大气频率传输,以在100米以上传播稳定的4GHz无线电频率 (RF) 信号. 补偿射频信号在5000秒内实现了低定时漂移和高频稳定性.
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:
- 精确的频率传播对于科学研究和技术应用至关重要.
- 大气条件可能会降低传输频率的稳定性和准确性.
- 光频 (OFC) 为高精度频率生成和传输提供了强大的工具.
研究的目的:
- 通过OFC的联合相锁和补偿来证明和评估大气频率传输方案.
- 评估在自由空间链路上传播的射频 (RF) 信号的时间波动和不稳定性.
- 为了实现高稳定性的射频信号传输,用于计量和通信领域的潜在应用.
主要方法:
- 使用光学频率 (OFC) 进行联合相锁定和补偿.
- 在100米的自由空间大气链路上传播了4 GHz无线电频率 (RF) 信号.
- 测量和分析传输的射频信号的时间波动和分数频率不稳定性.
主要成果:
- 成功地将一个高度稳定的4 GHz射频信号传输到100米的自由空间链接上,持续了5000秒.
- 总平方根平均 (RMS) 时间偏移达到大约208 fs,并获得补偿.
- 在1秒钟时显示出3.8×10−13和1000秒时显示出3.8×10−16等级的分数频率不稳定性.
结论:
- 联合阶段锁定和补偿方案有效地减轻了用于频率转移的大气干扰.
- 展示的方法使得高精度的射频信号能够在大气中传播,并且具有显著的稳定性.
- 这种技术对于在开放环境中需要稳定的频率标准的应用有前途.
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