Hybrid Raman/Brillouin-optical-time-domain-analysis-distributed optical fiber sensors based on cyclic pulse coding

2013 ◽  
Vol 38 (20) ◽  
pp. 4162 ◽  
Author(s):  
M. Taki ◽  
A. Signorini ◽  
C. J. Oton ◽  
T. Nannipieri ◽  
F. Di Pasquale
Keyword(s):  
Optical Fiber ◽  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Optical Fiber Sensors ◽  
Fiber Sensors ◽  
Optical Time ◽  
Distributed Optical Fiber

1200°C high-temperature distributed optical fiber sensing using Brillouin optical time domain analysis

2016 ◽  
Vol 55 (21) ◽  
pp. 5471 ◽  
Author(s):  
Pengbai Xu ◽  
Yongkang Dong ◽  
Dengwang Zhou ◽  
Cheng Fu ◽  
Juwang Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
Optical Fiber ◽  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Fiber Sensing ◽  
Optical Fiber Sensing ◽  
Optical Time ◽  
Distributed Optical Fiber

scholarly journals Discrimination of Temperature and Strain in Brillouin Optical Time Domain Analysis Using a Multicore Optical Fiber

Sensors ◽  
2018 ◽  
Vol 18 (4) ◽  
pp. 1176 ◽  
Author(s):  
Mohamed Zaghloul ◽  
Mohan Wang ◽  
Giovanni Milione ◽  
Ming-Jun Li ◽  
Shenping Li ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Optical Time

Measuring mortar shrinkage and cracking by pulse pre-pump Brillouin optical time domain analysis with a single optical fiber

2015 ◽  
Vol 145 ◽  
pp. 344-346 ◽  
Author(s):  
Yi Bao ◽  
Weina Meng ◽  
Yizheng Chen ◽  
Genda Chen ◽  
Kamal Henry Khayat
Keyword(s):  
Optical Fiber ◽  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Optical Time

scholarly journals Non Linear Strain Measures on Concrete Structures by Means of Embedded Optical Fiber Sensors

2018 ◽  
Author(s):  
Vincenzo Minutolo ◽  
Renato Zona
Keyword(s):  
Optical Fiber ◽  
Axial Strain ◽  
Single Mode ◽  
Time Domain Analysis ◽  
Optical Fiber Sensors ◽  
Reinforced Concrete Beams ◽  
Fiber Sensors ◽  
Non Linear ◽  
Optical Time ◽  
Set Up

Optical fiber sensors have become a widely-used tool to perform life-long monitoring of large structures. Different set-ups of sensors can be used to obtain information at different scopes. In this paper, the application of a portable Brillouin optical time domain analysis sensor applied to reinforced concrete beams is presented. The sensor is made up of a single-mode optical fiber applied to the structure that enables the measurement of tensile and compressive axial strain along the beams. The fiber is embedded into a concrete casting and fixed along the reinforcement bars so that a complete correlation can be obtained regarding strain and displacements in linear and non-linear flexural response. The use of four sensing fibers positioned along the beam's length at different vertical positions makes it possible to read the strain variation within the cross-section. In accordance with Bernoulli’s hypothesis, this allows curvature diagrams to be obtained across the structure. The measured curvature is used to set up the moment–curvature relationship, which highlights the possibility of the sensor monitoring structures continuously in space and time.

Optical Fiber Sensing Technology Based on Loss Vector Brillouin Optical Time Domain Analysis

2016 ◽  
Vol 36 (9) ◽  
pp. 0906004 ◽  
Author(s):  
李永倩 Li Yongqian ◽  
安琪 An Qi ◽  
李晓娟 Li Xiaojuan ◽  
何玉钧 He Yujun ◽  
张立欣 Zhang Lixin
Keyword(s):  
Optical Fiber ◽  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Fiber Sensing ◽  
Sensing Technology ◽  
Optical Fiber Sensing ◽  
Optical Time

Effect and Elimination of Polarization Random Noise in Golay-Coded Brillouin Optical Time Domain Analysis Fiber Sensors

2020 ◽  
Vol 40 (7) ◽  
pp. 0706002
Author(s):  
蒋朋 Jiang Peng ◽  
闫连山 Yan Lianshan ◽  
周银 Zhou Yin ◽  
李宗雷 Li Zonglei ◽  
张信普 Zhang Xinpu ◽  
...  
Keyword(s):  
Time Domain ◽  
Random Noise ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Fiber Sensors ◽  
Optical Time
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