Presentation Information
[WC1-5]Optimal Order of Pulse Sequence in Frequency Division Multiplexed Distributed Acoustic Sensor
○Jiazhen Ji1, Jiageng Chen1, Zhengyuan Xiao1, Zhengwen Li1, Jingdong Zhang2, Shengwen Feng2, Feng Li2, Zuyuan He1 (1.Shanghai Jiao Tong University, 2.Huawei Technologies Company, Ltd.)
Keywords:
Distributed fiber optical sensing,fibers and fiber devices for sensing
We change the custom frequency ascending pulse sequence in FDM-φ-OTDR to an odd-early-even-late order. Strain resolution is improved from 21.3 pε/√Hz to 14.6 pε/√Hz in an 8-FDM-φ-OTDR with 50 km fiber due to crosstalk mitigation.