2018-Distributed acoustic sensing based on pulse-coding phase-sensitive OTDR

2018-12-12 Hits:

Teaching and Research Group:光纤传感与器件

Journal:IEEE Internet of Things Journal

Key Words:Optical fiber sensors , Spatial resolution , Signal to noise ratio , Encoding , Optical fibers ...

Abstract:Phase-sensitive optical time-domain reflectometry (Φ-OTDR), which utilizes the phase information of Rayleigh scattered lightwave inside optical fiber, could turn a fiber cable into a massive sensor array for distributed acoustic sensing (DAS), i. e., an emerging infrastructure for Internet of Things. Given a certain fiber length, there are trade-offs among the sensing bandwidth, the sensitivity and the spatial resolution. In this paper, the concept of linearization and Golay pulse-coding for heterodyne Φ-OTDR are proposed and experimentally verified for the first time. Firstly we gave a ...

All the Authors: Yunjiang Rao, Qingyang Meng, Yue Wu, Yongxiang Chen, Jialin Jiang, Shengtao Lin, Yun Fu, Ji Xiong, Bin Zhang,Zinan Wang

First Author:Zinan Wang

Indexed by:Unit Twenty Basic Research

Correspondence Author:Zinan Wang

Document Code:DOI: 10.1109/JIOT.2018.2869474

Discipline:Engineering

First-Level Discipline:Optical engineering

Translation or Not:no

Date of Publication:2018-09-10

Date of Publication:2018-09-10