Title :
Optical frequency link between Torino and Firenze for remote comparison between Yb and Sr optical clocks
Author :
Calonico, D. ; Clivati, C. ; Costanzo, Giovanni A. ; Godone, Aldo ; Levi, F. ; Marchetti, Mirco ; Mura, A. ; Prevedelli, M. ; Schioppo, M. ; Tino, G.M. ; Zucco, M.E. ; Poli, Nicola
Author_Institution :
Ist. Naz. di Ricerca Metrol., Turino, Italy
Abstract :
The Italian Institute of Metrology (INRIM), the European Laboratory for NonLinear Spectroscopy (LENS), the Physics and Astronomy Department of the University of Firenze (UNIFI) and the Politecnico of Torino started a project to establish a 650 km optical fiber link that will enable remote frequency comparisons between high accuracy microwave and optical clocks of INRIM and UNIFI-LENS and an absolute measurement of the UNIFI-LENS Sr clock versus INRIM Cesium fountains. We report the overall architecture of the project, the present status of the experiment and the preliminary tests performed on the equipments.
Keywords :
atomic clocks; microwave devices; optical fibre testing; optical links; strontium; ytterbium; European Laboratory for NonLinear Spectroscopy; INRIM; Italian Institute of Metrology; LENS; Physics and Astronomy Department; Politecnico of Torino; Sr; UNIFI; University of Firenze; Yb; cesium fountain; distance 650 km; equipment testing; microwave clock; optical clock; optical fiber frequency link; remote frequency comparison;
Conference_Titel :
European Frequency and Time Forum (EFTF), 2012
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-1924-9
DOI :
10.1109/EFTF.2012.6502410
