DWI-assisted BOTDA for dynamic sensing

Yin Zhou,Lianshan Yan,Haijun He,Zonglei Li,Heng Qian,Xinpu Zhang,Bin Luo,Wei Pan

Journal of Lightwave Technology（2021）

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摘要

A co-propagating dual-wave interferometer- assisted Brillouin optical time domain analysis (DWI-BOTDA) integrated sensing system is proposed and experimentally demonstrated for high sampling rate dynamic sensing. Fast dynamic strain measurement is achieved by the DWI based on analyzing the relative phase variation between two co-propagating light waves with significantly improved dynamic strain me...

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关键词

Strain,Optical fiber sensors,Data acquisition,Vibrations,Optical interferometry,Strain measurement,Optical fiber polarization

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