利用光机械腔实现光子微波振荡器最近已成为现实。通过用蓝色失谐激光器泵浦腔，可以达到所谓的声子激光区-其中机械共振被放大超过损耗-并且输入信号被机械共振的整数倍的高度相干音调调制。\textcolor{Red}{Implementing optomechanical cavities on released films with high index of refraction can lead to optical modes at telecom wavelengths and mechanical resonances in the GHz scale, resulting in highly-stable signals in the microwave domain upon photodetection}。由于这种空腔的极端紧凑性，在卫星通信（SATCOM）中的应用似乎非常合适，但迄今为止还没有实验报告。在本文中，一个光机械微波振荡器（OMO）建立在一个微米级的硅光机械晶体腔的特点和测试在一个真正的卫星通信试验台。使用蓝色失谐激光器，OMO被驱动到声子激射状态，其中产生多个谐波，达到高达20 GHz的音调。在此制度下，其实际适用性，显着解决其作为光子本振器的性能，已被验证。结果，除了极端紧凑和硅技术兼容性的优点，使OMO非常有前途的候选人建立\textcolor{Red}{ultra-low}重量光子为基础的微波振荡器的卫星通信应用。
英文摘要：
The realization of photonic microwave oscillators using optomechanical cavities has recently become a reality. By pumping the cavity with a blue-detuned laser, the so-called phonon lasing regime - in which a mechanical resonance is amplified beyond losses - can be reached and the input signal gets modulated by highly-coherent tones at integer multiples of the mechanical resonance. \textcolor{Red}{Implementing optomechanical cavities on released films with high index of refraction can lead to optical modes at telecom wavelengths and mechanical resonances in the GHz scale, resulting in highly-stable signals in the microwave domain upon photodetection}. Owing to the extreme compactness of such cavities, application in satellite communications (SATCOM) seems highly appropriate, but no experiments have been reported so far. In this paper, an optomechanical microwave oscillator (OMO) built on a micron-scale silicon optomechanical crystal cavity is characterized and tested in a real SATCOM testbed. Using a blue-detuned laser, the OMO is driven into a phonon lasing state where multiple harmonics are generated, reaching tones up to 20 GHz. Under this regime, its practical applicability, remarkably addressing its performance as a photonic local oscillator, has been validated. The results, in addition with the advantages of extreme compactness and silicon-technology compatibility, make OMOs very promising candidates to build \textcolor{Red}{ultra-low} weight photonics-based microwave oscillators for SATCOM applications.
