Zhou Wen, Li Xinying, Yu Jianjun
Opt Express. 2017 Oct 30;25(22):26483-26491. doi: 10.1364/OE.25.026483.
We propose QPSK millimeter-wave (mm-wave) vector signal generation for D-band based on balanced precoding-assisted photonic frequency quadrupling technology employing a single intensity modulator without an optical filter. The intensity MZM is driven by a balanced pre-coding 37-GHz QPSK RF signal. The modulated optical subcarriers are directly sent into the single ended photodiode to generate 148-GHz QPSK vector signal. We experimentally demonstrate 1-Gbaud 148-GHz QPSK mm-wave vector signal generation, and investigate the bit-error-rate (BER) performance of the vector signals at 148-GHz. The experimental results show that the BER value can be achieved as low as 1.448 × 10 when the optical power into photodiode is 8.8dBm. To the best of our knowledge, it is the first time to realize the frequency-quadrupling vector mm-wave signal generation at D-band based on only one MZM without an optical filter.
我们提出了一种基于平衡预编码辅助光子四倍频技术的用于D波段的QPSK毫米波矢量信号生成方法，该技术采用单个强度调制器且无需光学滤波器。强度调制的马赫曾德尔调制器（MZM）由平衡预编码的37GHz QPSK射频信号驱动。调制后的光载波直接送入单端光电二极管以生成148GHz QPSK矢量信号。我们通过实验演示了1G波特148GHz QPSK毫米波矢量信号的生成，并研究了148GHz矢量信号的误码率（BER）性能。实验结果表明，当输入光电二极管的光功率为8.8dBm时，误码率值可低至1.448×10。据我们所知，这是首次仅基于一个无光学滤波器的MZM在D波段实现四倍频矢量毫米波信号生成。
