Time-slot multiplexing based bandwidth enhancement for fiber distributed acoustic sensing  

作　　者：Hao LI Cunzheng FAN Tao LIU Yujia LIU Zhijun YAN Perry SHUM Qizhen SUN 

机构地区：[1]National Engineering Laboratory for Next Generation Internet Access System,Wuhan National Laboratory for Optoelectronics,School of Optical and Electronic Information,Huazhong University of Sicence and Technology,Wuhan 430074,China [2]Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzheng 518055,China

出　　处：《Science China(Information Sciences)》2022年第1期288-289,共2页中国科学（信息科学）（英文版）

基　　金：supported by National Natural Science Foundation of China(NSFC)(Grant Nos.61922033,61775072);National Key Research and Development Program of China(Grant No.2018YFB2100902);Innovation Fund of WNLO。

摘　　要：Dear editor,The phase-sensitive optical time-domain reflectometry(φ-OTDR)has been demonstrated as the most common technique in fiber distributed acoustic sensing(DAS).However,traditional φ-OTDR based DAS suffered from the inherent trade-off between the maximum frequency response and the distance which can be characterized by distance bandwidth product(DBP),since the time interval of the probe pulses should be larger than the pulse round-trip flight time.

关 键 词：FIBER OTDR SLOT 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]