Fiber-Based Frequency Distribution Based on Long-Haul Communication Lasers

Sven-Christian Ebenhag, Per Olof Hedekvist, and Kenneth Jaldehag

Abstract:	Recent research and development of optical clocks has increased the need and requirement of better performing time and frequency transfer over baselines longer than 100 km. This need has resulted in a lot of activities in transfer methods using optical fiber, some of them in dedicated fibers and others in already existing fiber networks. This study has focused on oneway transmission over a fiber-optic WDM network. The results show that it is possible to perform a one-way time and frequency transfer with two wavelengths and, by evaluating these two against each other, create a correction signal for compensation for influences along the transmission path. This experiment has shown proof of concept, but further work is needed.Future work includes development of a physical correction component in the end of the link that incorporates the steering signal from the difference between the two wavelengths.
Published in:	Proceedings of the 41st Annual Precise Time and Time Interval Systems and Applications Meeting November 16 - 19, 2009 Hyatt Regency Tamaya Resort Santa Ana Pueblo, New Mexico
Pages:	57 - 66
Cite this article:	Ebenhag, Sven-Christian, Hedekvist, Per Olof, Jaldehag, Kenneth, "Fiber-Based Frequency Distribution Based on Long-Haul Communication Lasers," Proceedings of the 41st Annual Precise Time and Time Interval Systems and Applications Meeting, Santa Ana Pueblo, New Mexico, November 2009, pp. 57-66.
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