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本文为了提高高速光脉冲检测能力,利用时间透镜时域成像这原理,实现高速光脉冲的检测来降低对实验仪器的超高要求。通过搭建基于四波混频的时间透镜进行仿真,结果显示该高速脉冲的频谱包络与输出信号的频谱很大相似性,从输出信号可以得到输入信号频谱包含的所有信息,用频谱仪就可以检测高速脉冲,解决高速脉冲时间太短很难检测这一难题。最后,分析高阶色散对输出信号的影响,结果显示高阶色散只影响输出信号的时间,不影响频率。
In this paper, in order to improve the ability of high-speed optical pulse detection, the principle of time-domain time-domain imaging is used to detect high-speed optical pulses to reduce the ultra-high requirements of experimental instruments. Simulation results show that the spectral envelope of the high-speed pulse is very similar to the spectrum of the output signal. All the information contained in the input signal spectrum can be obtained from the output signal, and the spectrum analyzer can be used Detection of high-speed pulse, high-speed pulse to solve the problem is too short to detect this problem. Finally, the influence of high-order dispersion on the output signal is analyzed. The results show that high-order dispersion affects only the time of the output signal without affecting the frequency.