Wang Lu, Li Guangyi, Hao Tengfei, Zhu Sha, Li Ming, Zhu Ninghua, Li Wei
Opt Lett. 2020 Nov 15;45(22):6190-6193. doi: 10.1364/OL.411563.
We report a photonic scheme to generate multiband and multi-format microwave signals based on a commercial dual-polarization Mach-Zehnder modulator (DP-MZM). The key novelty of this work is the compact signal generator benefitting from the single modulator and the flexible multi-format signals at the multiband. The upper Mach-Zehnder modulator (MZM) of the DP-MZM is used to generate an optical frequency comb, while the lower MZM is driven by baseband electrical coding or single-chirp signal to obtain the multi-format modulated optical signal. The proposed scheme is theoretically analyzed and experimentally demonstrated. A multiband phase-coded microwave signal with a bit rate of 2 Gb/s and complementary linearly chirped microwave waveform pairs with a time duration of 1 µs and a bandwidth of 2 GHz have been successfully generated. The performance of pulse compression of generated signals is also demonstrated.
我们报告了一种基于商用双偏振马赫-曾德尔调制器（DP-MZM）生成多频段和多格式微波信号的光子学方案。这项工作的关键新颖之处在于，得益于单个调制器的紧凑型信号发生器以及多频段的灵活多格式信号。DP-MZM的上马赫-曾德尔调制器（MZM）用于生成光频梳，而下MZM由基带电编码或单啁啾信号驱动，以获得多格式调制光信号。对所提出的方案进行了理论分析和实验验证。成功生成了比特率为2 Gb/s的多频段相位编码微波信号以及持续时间为1 µs、带宽为2 GHz的互补线性啁啾微波波形对。还展示了所生成信号的脉冲压缩性能。
