光学
反射计
布里渊散射
材料科学
芯(光纤)
模式音量
布里渊区
单模光纤
光纤
纤维
光纤传感器
分布式声传感
保偏光纤
物理
计算机科学
光纤布拉格光栅
时域
复合材料
计算机视觉
作者
Jian Fang,Giovanni Milione,Jeffery S. Stone,Gaozhu Peng,Ming-Jun Li,Ezra Ip,Yaowen Li,Philip N. Ji,Yue-Kai Huang,Ming-Fang Huang,Shuji Murakami,William Shieh,Ting Wang
出处
期刊:Optics Letters
[The Optical Society]
日期:2019-03-01
卷期号:44 (5): 1096-1096
被引量:11
摘要
We propose a novel multi-parameter sensing technique based on a Brillouin optical time domain reflectometry in the elliptical-core few-mode fiber, using higher-order optical and acoustic modes. Multiple Brillouin peaks are observed for the backscattering of both the LP01 mode and LP11 mode. We characterize the temperature and strain coefficients for various optical-acoustic mode pairs. By selecting the proper combination of modes pairs, the performance of multi-parameter sensing can be optimized. Distributed sensing of temperature and strain is demonstrated over a 0.5-km elliptical-core few-mode fiber, with the discriminative uncertainty of 0.28°C and 5.81 με for temperature and strain, respectively.
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