首页|Time Transfer in a 1839-km Telecommunication Fiber Link Demonstrating a Picosecond-Scale Stability
Time Transfer in a 1839-km Telecommunication Fiber Link Demonstrating a Picosecond-Scale Stability
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An implementation of high-precision time transfer over a 1839-km field fiber loop back link between two provincial capitals of China,Xi'an and Taiyuan,is reported.Time transfer stabilities of 6.5 ps at averaging time of 1 s and 4.6 ps at 40000 s were achieved.The uncertainty for the time transfer system was evaluated,showing a budget of 56.2 ps.These results stand for a significant milestone in achieving high-precision time transfer over a field fiber link spanning thousands of kilometers,signifying a record-breaking achievement for the real-field time transfer in both stability and distance,which paves the way for constructing the nationwide high-precision time service via fiber network.
郭新兴、侯丙安、刘博、杨凡、孔维成、刘涛、董瑞芳、张首刚
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Key Laboratory of Time and Frequency Primary Standards,National Time Service Center,Chinese Academy of Sciences,Xi'an 710600,China
School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China
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