Fig. 1. Schematic of time-synchronization measurement

Fig. 2. Waveform of 200 ps FWHM Gaussian pulse after detection system

Fig. 3. Calibration results of cable time-delay difference. (a) Without cable; (b) with two cables

Fig. 4. Measurement results of synchronization difference (Δt=0)

Fig. 5. Schematic of synchronization measurement error caused by non-ideal conjugation