Phase Sensitive Optical Time-Domain Reflective Distributed Optical Fiber Sensing Technology

Xuping Zhang; Zhewen Ding; Rui Hong; Xiaohong Chen; Lei Liang; Chi Zhang; Feng Wang; Ningmu Zou; Yixin Zhang

doi:10.3788/AOS202141.0106004

Journals >Acta Optica Sinica >Volume 41 >Issue 1 >Page 0106004 > Article

Acta Optica Sinica
Vol. 41, Issue 1, 0106004 (2021)

Phase Sensitive Optical Time-Domain Reflective Distributed Optical Fiber Sensing Technology

Xuping Zhang^1、2, Zhewen Ding¹, Rui Hong¹, Xiaohong Chen¹, Lei Liang¹, Chi Zhang¹, Feng Wang¹, Ningmu Zou^1、*, and Yixin Zhang^1、2、**

Author Affiliations

¹Key Laboratory of Intelligent Optical Sensing and Manipulation, Ministry of Education, Nanjing University, Nanjing, Jiangsu 210093, China

²Shenzhen Research Institute, Nanjing University, Shenzhen, Guangdong 581000, China

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DOI: 10.3788/AOS202141.0106004 Cite this Article Set citation alerts

Xuping Zhang, Zhewen Ding, Rui Hong, Xiaohong Chen, Lei Liang, Chi Zhang, Feng Wang, Ningmu Zou, Yixin Zhang. Phase Sensitive Optical Time-Domain Reflective Distributed Optical Fiber Sensing Technology[J]. Acta Optica Sinica, 2021, 41(1): 0106004 Copy Citation Text

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Fig. 1. Superposition of scattered light in pulse range

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Basic structure of Φ-OTDR system. (a) Structure based on direct detection; (b) structure based on heterodyne coherent detection; (c) structure based on three-port coupler detection; (d) structure based on PGC detection

Fig. 2. Basic structure of Φ-OTDR system. (a) Structure based on direct detection; (b) structure based on heterodyne coherent detection; (c) structure based on three-port coupler detection; (d) structure based on PGC detection

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