提出了一种基于光相位信号自相干的高速光相位实时取样方案。利用时延为10ps的延时干涉仪(DI),将待测光信号的相位信息转换为强度信息;再在高非线性光纤(HNLF)中,利用四波混频(FWM)效应对强度信号进行取样。在接收端,利用不同中心波长的光滤波器(OBPF)即可滤出不同时间点的取样信号,从而在光域同时完成高速光相位信息的实时取样和取样信号的串-并转换。本文方案具有成本低、对测信号码率和波长不敏感的优点。实验中,对9GHz正弦调制以及10Gb/s非归零码调制的光相位信号实现了100G/s的高速实时取样系统,并转换为10路10G/s取样信号输出,最终恢复取样光信号的相位波形。 A high-speed optical phase real-time sampling scheme based on optical phase signal autocorrelation is proposed. The phase information of the optical signal to be measured is converted into the intensity information by using a delay interferometer (DI) with a delay of 10 ps. In the high nonlinear fiber (HNLF), the intensity signal Sampling. At the receiving end, the OBPF filters the sampled signals at different time points so as to simultaneously perform real-time sampling of high-speed optical phase information and serial-to-parallel conversion of sampled signals in the optical domain. This scheme has the advantages of low cost and insensitivity to the rate and wavelength of the signal under test. In the experiment, the high-speed real-time sampling system of 100G / s is realized for 9GHz sine modulation and 10Gb / s non-return-to-zero modulation optical phase signal and converted to 10 10G / s sampling signal output, finally the phase of the sampled optical signal is restored Waveform.