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Performance and uses of the Refimeve metrological signal, 1000 km from the source
Abstract : We present a detailed analysis of the end-user performance of the metrological signal at 1542 nm disseminated by the French national fiber network Refimeve, about 1000 km from the source. By means of a local ultrastable laser at 729 nm and an optical frequency comb, we are able to carry out instability and […]
The REFIMEVE national research infrastructure enables the distribution of ultra-stable frequency and time signals across 9,000 km of optical fiber, connecting over 30 laboratories throughout France. The exceptional accuracy of these signals—reaching beyond 10-18 — supports a wide range of scientific applications in fundamental physics, quantum technologies, photonics, geodesy and climate research, and the synchronization of large instruments in astrophysics and particle accelerators.
