Two-Way Time Transfer Through 2.4 Gbit/s Optical SDH System

Atsushi Imaoka, Masami Kihara, Michito Imae, Kuniyasu Imamura

Abstract:	An experiment to transfer time and frequency over 2.488 Gbit/s SDH (Synchronous Digital Hierarchy) system using 175km commercial optic flbers has been set up by CRL and NTT. We confirm that the frequency stability of the time comparison data is 10^-12/square root of tau at averaging times above 10 s. This equals that of the Cs frequenq standard (HP5071A) used in this experiment. The time comparison resolution is of the order of 10^-11 s (square root of time variance). The long-term stability of this system is expected to be better than 1 ns. The time comparison results of this experiment agree well the GPS common-view results.
Published in:	Proceedings of the 29th Annual Precise Time and Time Interval Systems and Applications Meeting December 2 - 4, 1997 Sheraton Long Beach Hotel Long Beach, California
Pages:	415 - 422
Cite this article:	Imaoka, Atsushi, Kihara, Masami, Imae, Michito, Imamura, Kuniyasu, "Two-Way Time Transfer Through 2.4 Gbit/s Optical SDH System," Proceedings of the 29th Annual Precise Time and Time Interval Systems and Applications Meeting, Long Beach, California, December 1997, pp. 415-422.
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