The unprecedented accuracy of modern optical clocks has spurred the development of matching frequency comparison techniques, with optical frequency transfer over fibre emerging as the method of choice. However, international time scales, as well as applications outside metrology, require reliable and economically sustainable time transfer in addition to frequency transfer capabilities. This project will advance fibre-based frequency transfer capabilities in Europe towards a universal tool for time and frequency metrology and beyond.
This is a joint research project carried out in the framework of the European Metrology Programme for Innovation and Research (EMPIR) (see:http://www.euramet.org/research-innovation/empir/). The EMPIR initiative is co-funded by the European Unions's Horizon 2020 research and innovation programme and the participating states. METAS is one of the project partners in the project.