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Precise Time Synchronization and Clock Comparison Through a White Rabbit Network‐Based Optical Fiber Link

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,...

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Bibliographic Details
Published in:Radio science 2021-07, Vol.56 (7), p.n/a
Main Authors: Neelam, Olaniya, M. P., Rathore, H., Sharma, L., Roy, A., De, S., Panja, S.
Format: Article
Language:English
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Summary: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. Key Points An ultra‐stable optical fiber link has been established utilizing White Rabbit network for precise transfer of time and frequency signals Effect of ambient temperature variation on the performance of time and frequency transfer through the optical fiber link has been studied Instability of the fiber link in terms of modified Allan deviation has been reached to 10–16 within one day of integration time
ISSN:0048-6604
1944-799X
DOI:10.1029/2020RS007232