Tang Zhenzhou, Zhang Fangzheng, Pan Shilong
Opt Express. 2014 Jan 13;22(1):305-10. doi: 10.1364/OE.22.000305.
A novel and compact photonic microwave downconverter is proposed and experimentally demonstrated based on an optoelectronic oscillator (OEO) using a single dual-drive Mach-Zehnder modulator (DMZM). The DMZM is used to simultaneously convert the input RF signal into an optical signal, form an OEO for RF carrier extraction, and downconvert the optical RF signal to the baseband. In the experiment, a 2-Gb/s NRZ coded 10.66-GHz RF signal is successfully downconverted to the baseband. In addition, a microwave receiver for wireless high-definition (HD) video transmission is built and verified based on the proposed downconverter. The experiment results confirm that the proposed downconverter has simple configuration, good downconversion performance and very stable operation.
提出了一种新颖且紧凑的光子微波下变频器，并基于使用单个双驱动马赫-曾德尔调制器（DMZM）的光电振荡器（OEO）进行了实验验证。该DMZM用于将输入射频信号同时转换为光信号，形成用于提取射频载波的OEO，并将光射频信号下变频到基带。在实验中，一个2 Gb/s非归零编码的10.66 GHz射频信号成功下变频到基带。此外，基于所提出的下变频器构建并验证了用于无线高清（HD）视频传输的微波接收器。实验结果证实，所提出的下变频器具有结构简单、下变频性能良好且运行非常稳定的特点。
