Distributed acoustic sensor based on a two-mode fiber
Distributed acoustic sensor based on a two-mode fiber
复制标题
DOI：
10.1364/oe.26.025399
复制
发表时间：
2018-09-17
期刊：
影响因子：
3.8
通讯作者：
Brambilla, Gilberto
中科院分区：
文献类型：
--
作者：
Chen, Mengmeng;Masoudi, Ali;Brambilla, Gilberto
提出了一种基于双模光纤的分布式光纤动态应变传感器，也称为分布式声传感器。通过使用phi-OTDR询问技术，来自高阶模的反向散射光可用于完全量化沿感测光纤的沿着振动。此外，通过结合从不同模式获得的结果，本底噪声改善2.52dB。这些结果证实了少模光纤可以用于DAS应用。由The Optical Society根据Creative Commons Attribution 4.0 License条款发布。
A distributed optical fiber dynamic strain sensor also known as a distributed acoustic sensor (DAS) based on two-mode fiber is demonstrated. By using phi-OTDR interrogation technique, the backscattered light from higher order modes can be used to fully quantify vibrations along the sensing fiber. In addition, by combining the results obtained from different modes, 2.52dB improvement in noise floor is achieved. These results confirm that few-mode fibers can be used for DAS applications. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.