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39th European Conference and Exhibition on Optical Communication (ECOC 2013)
We analyze the benefits of distributed Raman amplification in metrology transfer of phasecoherent ultra-narrowband optical frequencies in a long fiber link (200 km with additional 16 dB loss), providing high-gain bi-directional amplification with limited impact on phase noise, attaining a fractional frequency instability of 3×10 − 19 over 1000 s.doi:10.1049/cp.2013.1382 fatcat:bjmp453rcveu3eiqy36mqfiyvq