论文标题
局部双向光学频率比较的相位降低降低
Enhanced phase noise reduction in localized two-way optical frequency comparison
论文作者
论文摘要
纤维链路上的高稳定性光学频率比较可以建立超高的光钟网络，具有促进一系列应用的潜力，包括计量，地理位置和天文学。在本文中，我们从理论上分析并在实验上证明了局部局部双向（TD-LTW）光学频率比较方案，并提高了比较稳定性，表明光学频率比较在50 km转移链路上的分数不稳定性可以从1.30美元的$ 1.30 \ times10^{-15} $ 5.25} $ 5.25 \ $ 5.25 \ $ 5.25^ - \ 5.25^$ 5.25^^ - 系数为2.48。此外，我们也是第一次模型，并在实验中验证沿纤维链路对系统性能的不均匀相位噪声的影响。我们认为，这里提出的理论和技术将有助于通过大面积纤维链路开发高稳定性光钟网络。
High-stability optical frequency comparison over fiber link enables the establishment of ultrastable optical clock networks, having the potential to promote a series of applications, including metrology, geodesy, and astronomy. In this article, we theoretically analyze and experimentally demonstrate a timedelayed local two-way (TD-LTW) optical frequency comparison scheme with improved comparison stability, showing that the fractional instability of optical frequency comparison over a 50- km transfer link can be reduced from $1.30\times10^{-15}$ to $5.25\times10^{-16}$ at the 1 s integration time with an improvement factor of 2.48. Additionally, we also for the first time model and experimentally verify the effect of the inhomogeneous phase noise along the fiber link on the system performance. We believe that the theory and technique proposed here will be helpful in developing the high-stability optical clock networks over large-area fiber links.
