Parametric Optimization of the Practical Mixer Device in the Optical Comb Frequency Transfer System

Mixer is of crucial importance in evaluating the precision of the frequency transfer. We present preliminary results on the optimization of the practical mixer’s LO and RF input power parameters when performing downconversion. A fractional frequency instability better than 2E-13@1 s via 100 km fiber link with 100 MHz repetition frequency optical comb is measured under the optimized parameters.