170 citations · 886 across the 17 of their papers we have counts for
7 papers · 1 filter
Measuring absolute frequencies beyond the GPS limit via long-haul optical frequency dissemination
C. Clivati, G. Cappellini, L. Livi +12
Global Positioning System (GPS) dissemination of frequency standards is ubiquitous at present, providing the most widespread time and frequency reference for the majority of indust…
Beyond the fundamental noise limit in coherent optical fiber links
C. E. Calosso, E. Bertacco, D. Calonico +7
It is well known that temperature variations and acoustic noise affect ultrastable frequency dissemination along optical fiber. Active stabilization techniques are in general adopt…
Coherent optical frequency transfer at 5e-19 over a doubled 642 km fiber link
D. Calonico, E. K. Bertacco, C. E. Calosso +10
To significantly improve the frequency references used in radio-astronomy and precision measurements in atomic physics, we provide frequency dissemination through a 642 km coherent…
Frequency transfer via a two-way optical phase comparison on a multiplexed fiber network
Claudio Calosso, Elio K. Bertacco, Davide Calonico +6
We performed a two-way remote optical phase comparison on optical fiber. Two optical frequency signals were launched in opposite directions in an optical fiber and their phases wer…
A Large Area Fiber Optic Gyroscope on multiplexed fiber network
Cecilia Clivati, Davide Calonico, Giovanni A. Costanzo +3
We describe a fiber optical gyroscope based on the Sagnac effect realized on a multiplexed telecom fiber network. Our loop encloses an area of 20 km^2 and coexists with Internet da…
Distributed Raman optical amplification in phase coherent transfer of optical frequencies
Cecilia Clivati, Gabriele Bolognini, Davide Calonico +4
We describe the application of Raman Optical-fiber Amplification (ROA) for the phase coherent transfer of optical frequencies in an optical fiber link. ROA uses the transmission fi…
Planar-Waveguide External Cavity Laser Stabilization for an Optical Link with 1E-19 Frequency Stability
Cecilia Clivati, Alberto Mura, Davide Calonico +4
We stabilized the frequency of a compact planar-waveguide external cavity laser (ECL) on a Fabry-Pérot cavity (FPC) through a Pound-Drever-Hall scheme. The residual frequency stabi…