High-precision multi-node clock network distribution

A high precision multi-node clock network for multiple users was built following the precise frequency transmission and time synchronization of 120 km fiber. The network topology adopts a simple star-shaped network structure. The clock signal of a hydrogen maser (synchronized with UTC) was recovered...

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Bibliographic Details
Published in:Review of scientific instruments 2017-10, Vol.88 (10), p.103103-103103
Main Authors: Chen, Xing, Cui, Yifan, Lu, Xing, Ci, Cheng, Zhang, Xuesong, Liu, Bo, Wu, Hong, Tang, Tingsong, Shi, Kebin, Zhang, Zhigang
Format: Article
Language:English
Subjects:
Frequency stability
Hydrogen masers
Scientific apparatus & instruments
Substations
Synchronism
Time synchronization
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Summary:A high precision multi-node clock network for multiple users was built following the precise frequency transmission and time synchronization of 120 km fiber. The network topology adopts a simple star-shaped network structure. The clock signal of a hydrogen maser (synchronized with UTC) was recovered from a 120 km telecommunication fiber link and then was distributed to 4 sub-stations. The fractional frequency instability of all substations is in the level of 10−15 in a second and the clock offset instability is in sub-ps in root-mean-square average.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.5006521