6 papers
Studying fundamental limit of optical fiber links to level
Dan Xu, Won-kyu Lee, Fabio Stefani +3
We present an hybrid fiber link combining effective optical frequency transfer and evaluation of performances with a self-synchronized two-way comparison. It enables us to detect t…
Length measurement and stabilisation of the diagonals of a square area laser gyroscope
N. Beverini, G. Carelli, A. Di Virgilio +4
Large frame ring laser gyroscopes are top sensitivity inertial sensors able to measure absolute angular rotation rate below in few seconds. The development of…
Analysis of 90 days operation of the gyroscope GINGERINO
J Belfi, N Beverini, G. Carelli +6
GINGERINO is a square ring-laser prototype, which has been built to investigate the level of noise inside the Gran Sasso underground laboratory. It Is meant for fundamental physics…
First international comparison of fountain primary frequency standards via a long distance optical fiber link
J. Guéna, S. Weyers, M. Abgrall +25
We report on the first comparison of distant caesium fountain primary frequency standards (PFSs) via an optical fiber link. The 1415 km long optical link connects two PFSs at LNE-S…
Hybrid fiber links for accurate optical frequency comparisons
Won-Kyu Lee, Fabio Stefani, Anthony Bercy +3
We present the first experimental demonstration over a 43-km-long urban fiber network of a local two-way optical frequency comparison, which does not require any synchronization of…
Frequency and time transfer for metrology and beyond using telecommunication network fibres
Olivier Lopez, Fabien Kéfélian, Haifeng Jiang +11
The distribution and the comparison of an ultra-stable optical frequency and accurate time using optical fibres have been greatly improved in the last ten years. The frequency stab…