We experimentally clarified the characteristics of forward Brillouin scattering induced by radial acoustic modes (R _0,m ) in large effective area fiber. The measured resonance frequencies of R _0,m modes were shown to have different sensitivities to acoustic impedance. Then we performed discriminative measurement of temperature and acoustic impedance by selecting a pair of different R _0,m modes that would achieve the minimum measurement error, where we had successfully achieved small measurement uncertainties of 0.4 C and 0.03kgs^–1mm^–2, respectively.

中文翻译：

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大有效面积光纤前向布里渊散射对温度和声阻抗的判别传感

我们通过实验阐明了大有效面积光纤中由径向声模（R _{0 ,m} ）引起的前向布里渊散射特性。R _{0 ,m} 模式的测量共振频率显示出对声阻抗具有不同的敏感性。然后，我们通过选择一对不同的执行温度和声阻抗的测量判别ř _{0 ，米} 模式，将达到最小的测量误差，其中，我们已成功地实现了（0.4C）小的测量不确定性和0.03kgs ^-1毫米^-2分别.