中国物理B ›› 2016, Vol. 25 ›› Issue (9): 90601-090601.doi: 10.1088/1674-1056/25/9/090601

• GENERAL • 上一篇    下一篇

Fiber-based multiple-access frequency synchronization via 1f-2f dissemination

Xi Zhu(朱玺), Bo Wang(王波), Chao Gao(高超), Li-Jun Wang(王力军)   

  1. 1. Joint Institute for Measurement Science, State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China;
    2. Department of Precision Instruments, Tsinghua University, Beijing 100084, China;
    3. Department of Physics, Tsinghua University, Beijing 100084, China
  • 收稿日期:2016-04-13 修回日期:2016-04-29 出版日期:2016-09-05 发布日期:2016-09-05
  • 通讯作者: Bo Wang E-mail:bo.wang@tsinghua.edu.cn
  • 基金资助:
    Project supported by the National Key Scientific Instrument and Equipment Development Project of China (Grant No. 2013YQ09094303).

Fiber-based multiple-access frequency synchronization via 1f-2f dissemination

Xi Zhu(朱玺)1,3, Bo Wang(王波)1,2, Chao Gao(高超)1,2, Li-Jun Wang(王力军)1,2,3   

  1. 1. Joint Institute for Measurement Science, State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China;
    2. Department of Precision Instruments, Tsinghua University, Beijing 100084, China;
    3. Department of Physics, Tsinghua University, Beijing 100084, China
  • Received:2016-04-13 Revised:2016-04-29 Online:2016-09-05 Published:2016-09-05
  • Contact: Bo Wang E-mail:bo.wang@tsinghua.edu.cn
  • Supported by:
    Project supported by the National Key Scientific Instrument and Equipment Development Project of China (Grant No. 2013YQ09094303).

摘要: Considering the reference frequency dissemination requirements of the Square Kilometre Array telescope (SKA) project, on the basis of the 1f-2f precision frequency synchronization scheme, we propose and demonstrate a fiber-based multiple-access frequency synchronization scheme. The dissemination reference frequency can be recovered at arbitrary nodes along the entire fiber link. It can be applied to antennas close proximity to the SKA central station, and will lead to a better SKA frequency synchronization network. As a performance test, we recover the disseminated 100-MHz reference frequency at an arbitrary node chosen as being 5 km away from the transmitting site. Relative frequency stabilities of 2.0×10-14/s and 1.6×10-16/104s are obtained. We also experimentally verify the feasibility of a frequency dissemination link with three access points.

关键词: Square Kilometre Array, frequency synchronization, fiber, multiple-access

Abstract: Considering the reference frequency dissemination requirements of the Square Kilometre Array telescope (SKA) project, on the basis of the 1f-2f precision frequency synchronization scheme, we propose and demonstrate a fiber-based multiple-access frequency synchronization scheme. The dissemination reference frequency can be recovered at arbitrary nodes along the entire fiber link. It can be applied to antennas close proximity to the SKA central station, and will lead to a better SKA frequency synchronization network. As a performance test, we recover the disseminated 100-MHz reference frequency at an arbitrary node chosen as being 5 km away from the transmitting site. Relative frequency stabilities of 2.0×10-14/s and 1.6×10-16/104s are obtained. We also experimentally verify the feasibility of a frequency dissemination link with three access points.

Key words: Square Kilometre Array, frequency synchronization, fiber, multiple-access

中图分类号:  (Measurements common to several branches of physics and astronomy)

  • 06.30.-k
07.60.Vg (Fiber-optic instruments) 06.30.Ft (Time and frequency)