261 citations · 1.5k across the 21 of their papers we have counts for
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Brillouin amplification supports accuracy in optical frequency transfer over 1400~km of underground fibre
Sebastian M. F. Raupach, Andreas Koczwara, Gesine Grosche
We investigate optical frequency transfer over a 1400~km loop of underground fibre connecting Braunschweig and Strasbourg. Largely autonomous fibre Brillouin amplifiers (FBA) are t…
Optical frequency transfer via a 660 km underground fiber link using a remote Brillouin amplifier
S. M. F. Raupach, A. Koczwara, G. Grosche
In long-haul optical continuous-wave frequency transfer via fiber, remote bidirectional Er-doped fiber amplifiers are commonly used to mitigate signal attenuation. We demonstra…
Eavesdropping time and frequency: phase noise cancellation along a time-varying path, such as an optical fiber
Gesine Grosche
Single-mode optical fiber is a highly efficient connecting medium, used not only for optical telecommunications but also for the dissemination of ultra-stable frequencies or timing…
Chirped Frequency Transfer with an accuracy of and its Application to the Remote Synchronisation of Timescales
S. M. F. Raupach, G. Grosche
We demonstrate combined high-fidelity long-haul transfer of a linearly chirped, optical frequency and time transfer. In a proof-of-principle experiment we transfer an optical frequ…
Brillouin amplification in phase coherent transfer of optical frequencies over 480 km fiber
O. Terra, G. Grosche, H. Schnatz
We describe the use of fiber Brillouin amplification (FBA) for the coherent transmission of optical frequencies over a 480 km long optical fiber link. FBA uses the transmission fib…
Long-distance remote comparison of ultrastable optical frequencies with 1e-15 instability in fractions of a second
Andre Pape, Osama Terra, Jan Friebe +8
We demonstrate a fully optical, long-distance remote comparison of independent ultrastable optical frequencies reaching a short term stability that is superior to any reported remo…