光学公差仿真分析表明，当其内部的角锥反射镜和光纤准直器具有相同倾斜和偏

The simulation analysis of optical tolerances shows that when the pyramid mirror and the fiber collimator inside have the same tilt and decenter conditions, the coupling efficiency fluctuation of this scheme is much smaller than that of the traditional optical delay line. The experimental results of comparative measurement of terahertz time-domain waveforms show that the peak fluctuation of the terahertz time-domain signal measured by the new optical delay line designed by this scheme is only 1/4 of that of the traditional optical delay line

Optical tolerance simulation analysis shows that when the internal angle cone mirror and fiber optic verse have the same tilt and eccentric conditions, the coupling efficiency fluctuation of the scheme is much smaller than that of the traditional optical delay line. The experimental results of tahtz time domain waveform comparison measurement show that the peak fluctuation of tahtz time domain signal is only 1/4 of the traditional optical delay line

The simulation analysis of optical tolerance shows that the coupling efficiency fluctuation of the proposed scheme is much smaller than that of the traditional optical delay line when the angle cone mirror and the optical fiber collimator have the same tilt and eccentricity conditions. The experimental results of terahertz time domain waveform comparison show that the peak fluctuation of terahertz time domain signal measured by the new optical delay line is only 1 / 4 of that of the traditional optical delay line<br>