arXiv 0711.09332007-11quant-ph

86-km optical link with a resolution of 2.10-18 for RF frequency transfer

Olivier Lopez, Anne Amy-Klein, Christophe Daussy, Christian Chardonnet, François Narbonneau, Michel Lours, Georgio Santarelli

DOI：: 10.1140/epjd/e2008-00059-5

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RF frequency transfer over an urban 86 km fibre has been demonstrated with a resolution of 2.10-18 at one day measuring time using an optical compensator. This result is obtained with a reference carrier frequency of 1 GHz, and a rapid scrambling of the polarisation state of the input light in order to reduce the sensitivity to the polarisation mode dispersion in the fibre. The limitation due to the fibre chromatic dispersion associated with the laser frequency fluctuations is highlighted and analyzed. A preliminary test of an extended compensated link over 186 km using optical amplifiers gives a resolution below 10-17 at 1 day.

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