通过级联系统在 204 公里长的电信光纤链路中实现相干微波传输。

Coherent microwave transfer over a 204-km telecom fiber link by a cascaded system.

机构信息

National Institute of Information and Communications Technology, Koganei, Japan.

出版信息

IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Jan;57(1):168-74. doi: 10.1109/TUFFC.2010.1394.

DOI:10.1109/TUFFC.2010.1394

PMID:20040442

Abstract

We have demonstrated a microwave transfer over a 204-km noisy urban fiber link by a cascaded system with 2 stages, which connected 10-GHz and 1-GHz transfer systems in series. A diurnal phase-noise cancellation ratio of 45 dB was obtained by use of an electronic phase-noise compensation system. Additionally, the stabilities reached 6 x 10(-14) at 1 s and 5 x 10(-17) at one-half day, which agreed with the root-sum-square of those of the 10-GHz and 1-GHz transfers. We verified for the first time that the transfer stability degrades only square root N times in a cascaded system with N stages.

摘要

我们通过一个两级级联系统展示了通过 204 公里噪声城市光纤链路的微波传输，该系统串联连接了 10GHz 和 1GHz 的传输系统。通过使用电子相位噪声补偿系统，获得了 45dB 的日相噪声消除比。此外，在 1 秒时达到了 6 x 10(-14)的稳定性，在半天时达到了 5 x 10(-17)的稳定性，这与 10GHz 和 1GHz 传输的稳定性的均方根相符。我们首次验证了在具有 N 级的级联系统中，传输稳定性仅以 N 的平方根的速度劣化。