A high-precision time-synchronization fiducial system is necessary when using high-power laser drivers in physical experiments. To meet the demands of physical experiments, a time division multiplexing scheme based on an arbitrary waveform generator and high-speed electrooptic modulation is proposed. The time-synchronization fiducial system based on this scheme can generate multichannel signals, such as main laser, optic time fiducial lasers, electric time fiducial signals, and high-precision triggers. The proposed system can output 10 comb-shaped optic time fiducial lasers at three wavelengths, i.e., 532, 355, and 266 nm, 8 comb-shaped electric time fiducial signals, and two high-precision triggers with fast rise time and large amplitude. The peak-to-peak synchronization jitter value between the optic time fiducial laser and main laser is measured to be 12.80 ps, and the peak jitter of the optic time fiducial laser's period is 6.40 ps, which is close to the limit of the measurement system currently in use. A demonstration experiment of this system in a high-power laser driver is implemented to confirm that the system meets diagnostics requirements. Additionally, the time reference calibration of the streak camera's different scanning strokes is processed to effectively calibrate the time error of the camera in large sweeps.