Optical link between two optical frequency combs using injection locked laser

We demonstrated the technic of selection of a single comb mode from a mode-locked fiber and linked to the other comb based on electro-optic modulator (EOM). The single comb mode was selected from the fiber laser using a 1.25 GHz spacing FP-filter and injection locking technic. The EOM-comb with spacing of 25 GHz was generated as the side mode of the injection locked comb mode. Using the EOM-comb, we measured the frequency of acetylene stabilized laser of C-band of optical communication. The absolute frequency of the laser was 194 369 569 384.6 kHz and estimated the uncertainty of 3.0×10^-12 (k=1).