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

fYear

2012

fDate

23-27 April 2012

Firstpage

396

Lastpage

399

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;

fLanguage

English

Publisher

ieee

Conference_Titel

European Frequency and Time Forum (EFTF), 2012

Conference_Location

Gothenburg

Print_ISBN

978-1-4673-1924-9

Type

conf

DOI

10.1109/EFTF.2012.6502410

Filename

6502410