We present a novel and simple scheme for all-optical microwave photonic frequency converter, free of electrical components, based on stimulated Brillouin scattering (SBS) effect. An SBS-based frequency shifter is incorporated to generate Stokes wave whose frequency is down-shifted by${\rm{\ }}{v_b}$, where ${v_b}$ is defined as the Brillouin frequency shift. With a tunable optical passband filter, the up/down frequency conversion can be realized through the same structure. In the proof-of-concept experiment, the microwave signal at 1 to 15 GHz can be up-converted while the microwave signal at 11 to 29 GHz can be down-converted by the microwave photonic frequency converter. Moreover, the frequency and power stability of the generated signals are also investigated in three hours. To vindicate flexibility, low cost and easy implementation of the proposed all-optical setup, an experiment is carried out, and it turns out that only the frequency-to-be-converted signal source is needed while providing the ultra-wideband up/down conversion.

中文翻译：

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基于受激布里渊散射效应的简单灵活的全光微波光子变频器

我们提出了一种基于受激布里渊散射 (SBS) 效应的无电子元件的全光微波光子变频器的新颖而简单的方案。一个基于 SBS 的移频器被结合以产生斯托克斯波，其频率被下移${\rm{\ }}{v_b}$， 在哪里 ${v_b}$定义为布里渊频移。使用可调光通带滤波器，可以通过相同的结构实现上/下变频。在概念验证实验中，1至15 GHz的微波信号可以上变频，而11至29 GHz的微波信号可以通过微波光子变频器进行下变频。此外，还研究了三个小时内生成的信号的频率和功率稳定性。为了证明所提出的全光设置的灵活性、低成本和容易实现，进行了一项实验，结果证明在提供超宽带上/下时只需要待转换的信号源转换。