基于偏振复用延时干涉技术的光子波形产生技术研究

In this paper, a new photonic approach of microwave waveform generator based on polarization delay interference is proposed and experimentally demonstrated, in which only one laser and Mach - Zehnder modulator (MZM) are used and the waveform generated by the high rate of microwave photons of microwave technology. In the proposed microwave waveform generator, a sinusoidal microwave signal is applied to MZM. Polarization delay interference technology is achieved by adjusting the amount of delay on the differential delay line, square waveform and triangular waveform with a repetition rate tunable 5 GHz are experimentally generated. A theoretical analysis is developed, which analyze the principle of square waveform and triangular waveform based on polarization delay interference and calculate the optimal modulation index. A triangular, square waveform with a repetition rate tunable 5 GHz is experimentally generated, which is consistent with theoretical analysis.