Digital phase shift based simulated coherence phase demodulation technology for F-OTDR
文献类型：期刊论文
| 作者 | Fan, Ting1; Li, Qi2 ; Shao, Liyang3; Wu, Zhishen4; Sun, An1,4
|
| 刊名 | OPTICS COMMUNICATIONS
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 546页码:8 |
| 关键词 | & phi Heterodyne detection Digital phase demodulation Simulated coherence Digital phase shift -OTDR |
| ISSN号 | 0030-4018 |
| DOI | 10.1016/j.optcom.2023.129746 |
| 英文摘要 | In this paper, we propose a digital phase demodulation scheme for phase-sensitive optical time-domain reflectometer (F-OTDR) systems based on simulated coherence for digital phase shift, in which three-path signals with a phase interval of 120 can be obtained by employing digital simulated orthogonal coherence for phase shift instead of using a hardware 3x3 coupler and three detectors, while the high-frequency component can be eliminated through cross differential between simulated coherence signals. On this basis, the phase variation of Rayleigh backscattering (RBS) light can be analyzed by differential cross multiplication (DCM). The performance of the proposed scheme is evaluated through experiments by detecting a series of vibration signals with various sensing distances, vibration frequencies, and waveforms. The experimental results demonstrate that the phase variation caused by external vibration can be effectively reconstructed and a strain resolution of 0.5 ne and the SNR of 51.03 dB can be achieved through the proposed demodulation method, which significantly simplifies the system and effectively suppresses the deviation of phase interval and noise caused by hardware demodulation. |
| 资助项目 | Natural Science Basic Re-search Program of Shaanxi, China[2021JZ-45] ; Major Project of Inner Mongolia Science and Technology, China[2021ZD0034] |
| WOS研究方向 | Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:001047765500001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39187]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Sun, An |
| 作者单位 | 1.Northwest Univ, Sch Phys, Xian 710069, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Southern Univ Sci & Technol, Sch Innovat & Entrepreneurship, Shenzhen 518055, Peoples R China 4.Southeast Univ, Int Inst Urban Syst Engn, Nanjing 210018, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Ting,Li, Qi,Shao, Liyang,et al. Digital phase shift based simulated coherence phase demodulation technology for F-OTDR[J]. OPTICS COMMUNICATIONS,2023,546:8. |
| APA | Fan, Ting,Li, Qi,Shao, Liyang,Wu, Zhishen,&Sun, An.(2023).Digital phase shift based simulated coherence phase demodulation technology for F-OTDR.OPTICS COMMUNICATIONS,546,8. |
| MLA | Fan, Ting,et al."Digital phase shift based simulated coherence phase demodulation technology for F-OTDR".OPTICS COMMUNICATIONS 546(2023):8. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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