| Fiber-based multiple-access frequency synchronization via 1f–2f dissemination |
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| 引用本文： | 朱玺,王波,高超,王力军.Fiber-based multiple-access frequency synchronization via 1f–2f dissemination[J].中国物理 B,2016,25(9):90601-090601. |
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| 作者姓名： | 朱玺 王波 高超 王力军 |
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| 作者单位： | 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 |
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| 基金项目： | Project supported by the National Key Scientific Instrument and Equipment Development Project of China (Grant No. 2013YQ09094303). |
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| 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 of2.0×10~(-14)/s and 1.6×10~(-16)/10~4 s are obtained.We also experimentally verify the feasibility of a frequency dissemination link with three access points.
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| 收稿时间： | 2016-04-13 |
Fiber-based multiple-access frequency synchronization via 1f-2f dissemination |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | Square Kilometre Array frequency synchronization fiber multiple-access |
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