中文版 | English
Title

Brillouin Frequency Estimation in Distributed Brillouin Optical Fiber Sensors Based on Instantaneous Frequency

Author
Publication Years
2022
DOI
Source Title
ISSN
1530-437X
EISSN
1558-1748
Volume22Issue:19Pages:18501-18507
Abstract
Short-time Fourier transform (STFT) algorithm with Lorentzian fitting is popular in distributed Brillouin optical fiber sensors to acquire Brillouin frequency. However, STFT often suffers from the trade-off between Brillouin frequency measurement resolution and computation complexity. To lower the complexity of Brillouin frequency analysis and speedup measurement, a novel method based on instantaneous frequency (IF) analysis is proposed. The instantaneous Brillouin frequency can be obtained through the instantaneous phase change between two adjacent samples in time domain. The requirement on spectral resolution is therefore greatly relaxed, significantly reducing computation complexity and lowering measurement time cost. A Brillouin optical time-domain reflectometry (BOTDR) scheme is demonstrated with a spatial resolution of 1.2 m over 5 km sensing fiber. For an average count of 4096 over measurements, experiments show that IF algorithm can reduce computation complexity by 122 times at a standard deviation (STD) of 0.5065MHz for BFS estimation which is comparable to the standard deviation obtained through STFT in conjunction with Lorentzian fitting.
Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
Others
Funding Project
National Natural Science Foundation of China (NSFC)["61875246","62075086"]
WOS Research Area
Engineering ; Instruments & Instrumentation ; Physics
WOS Subject
Engineering, Electrical & Electronic ; Instruments & Instrumentation ; Physics, Applied
WOS Accession No
WOS:000862372900036
Publisher
ESI Research Field
ENGINEERING
Scopus EID
2-s2.0-85137876426
Data Source
Scopus
PDF urlhttps://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9869436
Citation statistics
Cited Times [WOS]:2
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/402407
DepartmentDepartment of Electrical and Electronic Engineering
Affiliation
1.Institute of Photonics Technology, Jinan University, Guangzhou, China
2.Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
Recommended Citation
GB/T 7714
Li,Wei,Jiang,Lin,Zhang,Tianfang,et al. Brillouin Frequency Estimation in Distributed Brillouin Optical Fiber Sensors Based on Instantaneous Frequency[J]. IEEE SENSORS JOURNAL,2022,22(19):18501-18507.
APA
Li,Wei.,Jiang,Lin.,Zhang,Tianfang.,Cheng,Linghao.,Liang,Hao.,...&Guan,Bai Ou.(2022).Brillouin Frequency Estimation in Distributed Brillouin Optical Fiber Sensors Based on Instantaneous Frequency.IEEE SENSORS JOURNAL,22(19),18501-18507.
MLA
Li,Wei,et al."Brillouin Frequency Estimation in Distributed Brillouin Optical Fiber Sensors Based on Instantaneous Frequency".IEEE SENSORS JOURNAL 22.19(2022):18501-18507.
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