A novel structure for photonic frequency-multiplication millimeter-wave (mm-wave) generation with two cascaded dual-parallel Mach–Zehnder modulators (DPMZMs) but no optical filter is demonstrated. By properly adjusting the phase and amplitude of radio frequency (RF) driving signal and the bias points of two DPMZMs, frequency 12-tupled, 18-tupled, or 24-tupled high-spectral-purity mm-wave signals are shown to be generated. This scheme largely eliminates the bandwidth limitation introduced by the electrical or optical filter in photonic frequency-multiplication mm-wave generation.

中文翻译：

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级联DPMZM的光子倍频毫米波产生

一种具有两个级联双并联马赫曾德尔调制器（DPMZMs）的光子倍频毫米波（mm-wave）生成的新颖结构，但未展示光学滤波器。通过适当调整射频（RF）驱动信号的相位和幅度以及两个DPMZM的偏置点，可以显示出频率为12倍，18倍或24倍的高光谱纯度毫米波信号。该方案极大地消除了电或光学滤波器在光子倍频毫米波产生中引入的带宽限制。