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Precise Time Synchronization and Clock Comparison Through a White Rabbit Network‐Based Optical Fiber Link
Author(s) -
Olaniya M. P.,
Rathore H.,
Sharma L.,
Roy A.,
De S.,
Panja S.
Publication year - 2021
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2020rs007232
Subject(s) - atomic clock , synchronization (alternating current) , clock synchronization , computer science , time transfer , link (geometry) , transmission (telecommunications) , node (physics) , optical fiber , master clock , data transmission , optical link , telecommunications , real time computing , physics , global positioning system , optics , clock signal , computer network , acoustics , jitter , channel (broadcasting)
Precise transfer of time and frequency signals over long distances as well as clock synchronization to an ultra‐stable reference are very crucial for many of the technological applications as well as for advanced scientific research. These reinforces a wide range of applications such as navigation, power grid management, mobile communication, and so on. In order to compare the performances of two highly stable and accurate atomic clocks, it is desirable that the link between the two clocks, that is, the transmission link has higher level of stability than those clocks. This article describes establishment of an ultra‐stable optical fiber link employing White Rabbit network for transfer of time and frequency signals and also for comparing performance of atomic clocks. Utilizing this link, time signals have been transferred within an uncertainty of ±130 ps at ambient temperature (30°C–40°C) and the instability of the link in terms of modified Allan‐deviation reaches to ∼10 −16 within one day of integration time.