Zhu Yicheng, Wu Xingliang, Wang Kangbo, Shuai Wenlan, Zhang Jianzhong, Qiao Lijun, Wang Tao, Gao Shaohua, Zhang Mingjiang
Opt Lett. 2021 Dec 1;46(23):5814-5817. doi: 10.1364/OL.441783.
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.
据我们所知，我们首次在保偏光纤中基于混沌激光通过实验观测到了局域布里渊动态光栅（BDG）。混沌BDG的光栅长度可通过改变混沌激光的光谱宽度来调节。进一步分析了反射光谱随光栅长度的特性，这与光纤布拉格光栅理论相符。基于混沌BDG的温度分布测量已得到验证，其空间分辨率可达厘米量级。
