We propose and experimentally demonstrate a multi-frequency optoelectronic oscillator (OEO) based on the phase-modulation to intensity-modulation conversion. A microwave photonic filter incorporating an optical fiber Bragg grating Fabry–Perot filter and an electrical yttrium iron garnet (YIG) filter in two branches are used to select the oscillation modes of the OEO. By adjusting the wavelength of laser source or the central frequency of YIG filter, two frequencies can be tuned independently within a wide range. The single sideband phase noises of the generated frequencies are measured experimentally. Moreover, the OEO shows potential ability to achieve more frequencies oscillation by multiplexing more optical and electrical filters.

我们提出并实验证明了一种基于相位调制到强度调制转换的多频光电振荡器 (OEO)。在两个分支中包含光纤布拉格光栅法布里-珀罗滤波器和电钇铁石榴石 (YIG) 滤波器的微波光子滤波器用于选择 OEO 的振荡模式。通过调整激光源的波长或YIG滤波器的中心频率，可以在较宽的范围内独立调谐两个频率。生成频率的单边带相位噪声是通过实验测量的。此外，OEO 显示出通过多路复用更多光学和电子滤波器来实现更多频率振荡的潜在能力。