High-resolution optical frequency dissemination on a telecommunications network with data traffic.

@article{Kflian2009HighresolutionOF,
  title={High-resolution optical frequency dissemination on a telecommunications network with data traffic.},
  author={Fabien K{\'e}f{\'e}lian and Olivier Lopez and Haifeng Jiang and Christian Chardonnet and Anne Amy-Klein and Giorgio Santarelli},
  journal={Optics letters},
  year={2009},
  volume={34 10},
  pages={1573-5}
}
We transferred the frequency of an ultrastable laser over a 108-km-long urban fiber link comprising 22 km of an optical communications network fiber simultaneously carrying Internet data traffic. The metrological signal and the digital data signal were transferred over two different frequency channels in a dense wavelength-division multiplexing scheme. The metrological signal was inserted in and extracted from the communication network using bidirectional off-the-shelf optical add-drop… CONTINUE READING
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