Photonic Services for Time and Frequency Transmission in the Czech Republic

Josef Vojtech; Vladimir Smotlacha

doi:10.4028/www.scientific.net/AMM.421.721

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 421Photonic Services for Time and Frequency...

Photonic Services for Time and Frequency Transmission in the Czech Republic

Abstract:

In every country exists a time and frequency laboratory that operates a certain set of atomic clocks with goal to provide national approximation of UTC time scale. Generally, higher number of these interconnected clocks (Caesium primary standards and Hydrogen masers) might improve accuracy and stability of the time scale. The term interconnection in this context means that we have to transfer time between them despite of their location at geographically distant places the common method is a dedicated two-way satellite link or a GPS based system, however utilization of fibre links constantly increases. And present all-optical networks allow stable transmission of information. However to increase stability specific measures are necessary. Contribution summarizes the reasons for building of infrastructure dedicated to transfer of accurate time and frequency in the Czech Republic. It shows achieved results and indicated necessary steps for further stability improvements.

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Periodical:

Applied Mechanics and Materials (Volume 421)

Pages:

721-724

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.421.721

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Online since:

September 2013

Authors:

Josef Vojtech, Vladimir Smotlacha

Keywords:

Atomic Clock Comparison, Open Transmission System, Photonic Service, Precise Time Transmission, Transmission of Basic Quantities

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