86-km optical link with a resolution of 2 × 10-18 for RF frequency transfer
- 412 Downloads
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.
PACS.42.62.Eh Metrological applications; optical frequency synthesizers for precision spectroscopy 06.30.Ft Time and frequency 42.81.Uv Fiber networks 42.81.Gs Birefringence, polarization
Unable to display preview. Download preview PDF.
- B. Shillue, ALMA Memo No. 443 (2002), http://www.alma.nrao.edu/memos/ Google Scholar
- R.T. Logan, G.F. Lutes, Proc. of IEEE Frequency Control Symposium 310 (1992) Google Scholar
- M. Calhoun, S. Huang, R.L. Tjoelker, Proceedings of the IEEE, Special Issue on Technical Advances in Deep Space Communications & Tracking 95 (2007) Google Scholar
- G. Grosche et al., CLEO Report No. CMKK1 (2007) Google Scholar
- M.I. Joindot, Les Télécommunications par fibres optiques (Dunod and CNET-ENST, Paris, 1996) Google Scholar
- G.J. Meslener, IEEE J. Quant. Electr. QE-20, 1208 (1984) Google Scholar