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

被引:28
作者
Zhang Xuping [1 ,2 ]
Ding Zhewen [1 ]
Hong Rui [1 ]
Chen Xiaohong [1 ]
Liang Lei [1 ]
Zhang Chi [1 ]
Wang Feng [1 ]
Zou Ningmu [1 ]
Zhang Yixin [1 ,2 ]
机构
[1] Nanjing Univ, Key Lab Intelligent Opt Sensing & Manipulat, Minist Educ, Nanjing 210093, Jiangsu, Peoples R China
[2] Nanjing Univ, Shenzhen Res Inst, Shenzhen 581000, Guangdong, Peoples R China
关键词
fiber optics; distributed optical fiber sensing; phase sensitive optical time-domain reflectometer; disturbance monitoring; acoustic monitoring; PHI-OTDR; SPATIAL-RESOLUTION; SYSTEM; VIBRATION; SENSOR; PULSE; REFLECTOMETER; ENHANCEMENT; RECOGNITION;
D O I
10.3788/AOS202141.0106004
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Since the phase change of the scattered light is extremely sensitive to external disturbances, the phase sensitive optical time-domain reflectometer (Phi-OTDR) technology has the characteristics of high response speed and ultra-high sensitivity. Compared with other existing distributed optical fiber sensing technologies, Phi-OTDR technology has obvious advantages in environmental adaptability and convenience of optical cable layout. This article introduces the principle, structure, performance, and application of the Phi-OTDR system, and looks forward to its development trend.
引用
收藏
页数:15
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