A Photonic Microwave Frequency Quadrupler Using Two Cascaded Intensity Modulators With Repetitious Optical Carrier Suppression
A Photonic Microwave Frequency Quadrupler Using Two Cascaded Intensity Modulators With Repetitious Optical Carrier Suppression
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DOI：
10.1109/lpt.2007.899462
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发表时间：
2007-07
影响因子：
2.6
通讯作者：
Jian Zhang;Hong-wei Chen;Minghua Chen;Tianliang Wang;S. Xie
中科院分区：
文献类型：
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作者：
Jian Zhang;Hong-wei Chen;Minghua Chen;Tianliang Wang;S. Xie
我们从理论上分析和实验上证明了一种新的4至40 GHz的频率四倍器的光纤无线电系统。通过在两个级联的强度调制器中使用光载波抑制调制方案，四倍微波或毫米波信号被光学地产生，而不需要光和电陷波滤波器来去除残余载波分量。此外，通过在两个驱动信号之间具有π/2相移的串联强度调制，大大降低了对高驱动电压的限制。
We theoretically analyzed and experimentally demonstrated a novel 4- to 40-GHz frequency quadrupler for radio-over- fiber systems. By using an optical carrier suppression modulation scheme in two cascaded intensity modulators, four-fold microwave or millimeter wave signals are optically generated without the need for an optical and electrical notch filter to remove the residual carrier components. Moreover, the limitation of high drive voltage is greatly reduced through tandem intensity modulation with pi/2 phase shift between two driving signals.