题名 | Fading suppression and noise reduction of a DAS system integrated multi-core fiber |
作者 | |
发表日期 | 2024-07-15
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DOI | |
发表期刊 | |
EISSN | 1094-4087
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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 | |
语种 | 英语
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学校署名 | 第一
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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).
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出版者 | |
EI入藏号 | 20243016736918
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EI主题词 | Fibers
; Phase noise
; Signal reconstruction
; Space division multiple access
; Vector spaces
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EI分类号 | Magnetism: Basic Concepts and Phenomena:701.2
; Information Theory and Signal Processing:716.1
; Light/Optics:741.1
; Mathematics:921
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ESI学科分类 | PHYSICS
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来源库 | EV Compendex
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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.
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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.
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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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