We experimentally observe the local Brillouin dynamic grating (BDG) based on a chaotic laser in a polarization-maintaining fiber for the first time, to the best of our knowledge. The grating length of the chaotic BDG can be adjusted by changing the optical spectral width of the chaotic laser. The characteristics of the reflection spectrum versus the grating length are further analyzed, which agrees with the theory of fiber Bragg grating. Temperature distributed measurements based on the chaotic BDG have been demonstrated with a spatial resolution of an order of centimeter.

中文翻译：

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混沌布里渊动态光栅的实验观察

据我们所知，我们首次在保偏光纤中通过实验观察了基于混沌激光器的局部布里渊动态光栅（BDG）。混沌BDG的光栅长度可以通过改变混沌激光器的光谱宽度来调整。进一步分析了反射光谱随光栅长度变化的特性，与光纤布拉格光栅的理论一致。基于混沌 BDG 的温度分布测量已被证明具有厘米数量级的空间分辨率。