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Digitalized Polarization Fading Suppression and Phase Demodulation Scheme of Phase-Sensitive Optical Time-Domain Reflectometry Based on Polarization Diversity Virtual Coherence

文献类型：期刊论文

作者Wu, Xiatong3; Sun, An2,3; Liu, Yanming1; Ji, Wei2,3
刊名PHOTONICS
出版日期2025-04-14
卷号12期号:4页码:12
关键词phi-OTDR polarization fading suppression phase demodulation polarization diversity
DOI10.3390/photonics12040375
英文摘要In this paper, a digitalized polarization fading suppression and phase demodulation technique for a phase-sensitive optical time-domain reflectometry (phi-OTDR) sensing system utilizing polarization diversity virtual coherence is proposed, in which virtual cross-coherence between the polarization diversity digital signals is employed for simultaneous fading noise suppression and phase demodulation. The principle of the proposed demodulation algorithm is presented and analyzed. Based on this, the practicability and validity of the proposed demodulation method for fading noise suppression and distributed vibration sensing are confirmed through experiments. The experimental results indicate that the proposed demodulation scheme can effectively reduce the polarization fading noise caused by the polarization mismatch between the probe light and the reference light, and the phase changes induced by external interference can also be accurately recovered with a signal-to-noise ratio (SNR) of vibration signal localization of 27.14 dB and an SNR of vibration signal phase demodulation of 47.88 dB, which provides a simplified method for simultaneous polarization fading suppression and the phase demodulation of the phi-OTDR system.
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDC 220202] ; Major Project of Inner Mongolia Science and Technology, China[2021ZD0034] ; Open project of State Key Laboratory of Rail Transit Engineering Informatization China[SKLKZ2204] ; Key Research and Development Program of Xianyang, China[L2023-ZDYF-QYCX-008]
WOS研究方向Optics
语种英语
WOS记录号WOS:001474580200001
出版者MDPI
源URL[http://119.78.100.198/handle/2S6PX9GI/35942]  
专题中科院武汉岩土力学所
通讯作者Sun, An; Liu, Yanming
作者单位1.State Key Lab Rail Transit Engn Informatizat FSDI, Xian 710043, Peoples R China
2.Chinese Acad Sci, Inst Rock & Soil, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
3.Northwest Univ, Sch Phys, Xian 710069, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Xiatong,Sun, An,Liu, Yanming,et al. Digitalized Polarization Fading Suppression and Phase Demodulation Scheme of Phase-Sensitive Optical Time-Domain Reflectometry Based on Polarization Diversity Virtual Coherence[J]. PHOTONICS,2025,12(4):12.
APA Wu, Xiatong,Sun, An,Liu, Yanming,&Ji, Wei.(2025).Digitalized Polarization Fading Suppression and Phase Demodulation Scheme of Phase-Sensitive Optical Time-Domain Reflectometry Based on Polarization Diversity Virtual Coherence.PHOTONICS,12(4),12.
MLA Wu, Xiatong,et al."Digitalized Polarization Fading Suppression and Phase Demodulation Scheme of Phase-Sensitive Optical Time-Domain Reflectometry Based on Polarization Diversity Virtual Coherence".PHOTONICS 12.4(2025):12.

入库方式： OAI收割

来源：武汉岩土力学研究所

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