Simultaneous Distribution of Stable Frequency and Data Signals Over Hollow-Core Optical Fibers

We demonstrate the simultaneous distribution of stable frequency and data signals over hollow-core fibers (HCF). We show that the use of HCF reduces frequency stability degradation observed in links made of standard single-mode fibers (SMFs) due to nonlinear interaction between the co-propagating signals which is orders of magnitude weaker in HCF.