中文版 | English
题名

Fading suppression and noise reduction of a DAS system integrated multi-core fiber

作者
发表日期
2024-07-15
DOI
发表期刊
EISSN
1094-4087
卷号32页码:26793-26807
摘要
Multi-core fiber (MCF) has attracted increasing attention for application in distributed fiber sensing owing to its unique properties of independent light transmission in multiple spatial channels. Here, we report a distributed acoustic sensing (DAS) system integrated MCF to suppress coherent fading, which overcomes an inevitable challenge in DAS systems. Because the parallel spatial cores in MCF allow the use of space-division multiplexed (SDM) technology, we propose that fading can be effectively suppressed by merging different signals with the spatial rotated-vector-average (SRVA) method. We theoretically analyze the principle of SRVA in fading suppression, and identify that it can effectively reduce phase noise with preventing phase unwrapping failures. In our experiment, a DAS system with 2.58-km length MCF have been investigated, the fading rate of Rayleigh backscattered signals is effectively reduced by three orders of magnitude and the amplitude fluctuation range is decreased by 21.9 dB. Compared with the conventional spectrum extraction and remix method (SERM), SRVA reduces the noise level by 9.5 dB, which also shows excellent low-frequency signal recovery ability. Benefiting from its fading suppression, the false alarm of localization is mitigated and the phase recovery can be distortionless. The proposed and verified method is helpful for the application of SDM-based MCF in long-distance distributed fiber sensors and accelerates the progress of integrated sensing and communication.
© 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
收录类别
SCI ; EI
语种
英语
学校署名
第一
资助项目
Funding. National Natural Science Foundation of China (NSFC, 62220106006, 62361136584, 62205139); General Program of Shenzhen Municipal Science and Technology Innovation Council (JCYJ20220530113811026); Shenzhen Research Foundation under Grant (KJZD20230923114601003); CAS Pioneer Hundred Talents Program; Shenzhen Science and Technology Innovation Program (JSGGKQTD20221101115656030,SGDX20211123114001001); Basic and Applied Basic Research Foundation of Guangdong Province (2021B1515120013); Young Elite Scientists Sponsorship Program by CAST (2023QNRC001).
出版者
EI入藏号
20243016736918
EI主题词
Fibers ; Phase noise ; Signal reconstruction ; Space division multiple access ; Vector spaces
EI分类号
Magnetism: Basic Concepts and Phenomena:701.2 ; Information Theory and Signal Processing:716.1 ; Light/Optics:741.1 ; Mathematics:921
ESI学科分类
PHYSICS
来源库
EV Compendex
引用统计
成果类型期刊论文
条目标识符http://sustech.caswiz.com/handle/2SGJ60CL/794445
专题南方科技大学
作者单位
1.Department of EEE, Southern University of Science and Technology, Shenzhen; 518055, China
2.State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Southern University of Science and Technology, Shenzhen; 518055, China
3.Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
4.Wuhan National Laboratory for Optoelectronics (WNLO), School of Optics and Electronic Information, Huazhong University of Science and Technology, Wuhan; 430074, China
5.Pengcheng Laboratory, Shenzhen; 518055, China
第一作者单位南方科技大学
第一作者的第一单位南方科技大学
推荐引用方式
GB/T 7714
Xiao, Yihong,Liu, Huanhuan,Li, Jialong,et al. Fading suppression and noise reduction of a DAS system integrated multi-core fiber[J]. Optics Express,2024,32:26793-26807.
APA
Xiao, Yihong.,Liu, Huanhuan.,Li, Jialong.,Shen, Xingliang.,Zhao, Ziyan.,...&Shum, Perry Ping.(2024).Fading suppression and noise reduction of a DAS system integrated multi-core fiber.Optics Express,32,26793-26807.
MLA
Xiao, Yihong,et al."Fading suppression and noise reduction of a DAS system integrated multi-core fiber".Optics Express 32(2024):26793-26807.
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