Long-Distance Frequency Dissemination with a Resolution of 10-17

C. Daussy, O. Lopez, A. Amy-Klein, A. Goncharov, M. Guinet, C. Chardonnet, F. Nabonneau, M. Lours, D. Chambon, A. Bize, A. Clairon, G. Santarelli, Michael Tobar, Andre Luiten

Research output: Contribution to journalArticlepeer-review

140 Citations (Scopus)


We use a new technique to disseminate microwave reference signals along ordinary optical fiber. The fractional frequency resolution of a link of 86 km in length is 10(-17) for a one day integration time, a resolution higher than the stability of the best microwave or optical clocks. We use the link to compare the microwave reference and a CO2/OsO4 frequency standard that stabilizes a femtosecond laser frequency comb. This demonstrates a resolution of 3x10(-14) at 1 s. An upper value of the instability introduced by the femtosecond laser-based synthesizer is estimated as 1x10(-14) at 1 s.
Original languageEnglish
Pages (from-to)203904-1-203904-4
JournalPhysical Review Letters
Issue number20
Publication statusPublished - 2005


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