Recent progress in distributed fiber optic sensors based upon Brillouin scattering

1995 ◽  
Author(s):  
Xiaoyi Bao ◽  
David J. Webb ◽  
David A. Jackson
Keyword(s):  
Recent Progress ◽  
Fiber Optic ◽  
Brillouin Scattering ◽  
Fiber Optic Sensors

Recent progress of using Brillouin distributed fiber optic sensors for geotechnical health monitoring

2017 ◽  
Vol 258 ◽  
pp. 131-145 ◽  
Author(s):  
Cheng-Yu Hong ◽  
Yi-Fan Zhang ◽  
Guo-Wei Li ◽  
Meng-Xi Zhang ◽  
Zi-Xiong Liu
Keyword(s):  
Health Monitoring ◽  
Recent Progress ◽  
Fiber Optic ◽  
Fiber Optic Sensors

scholarly journals Recent Progress in Distributed Fiber Optic Sensors

Sensors ◽  
2012 ◽  
Vol 12 (7) ◽  
pp. 8601-8639 ◽  
Author(s):  
Xiaoyi Bao ◽  
Liang Chen
Keyword(s):  
Recent Progress ◽  
Fiber Optic ◽  
Fiber Optic Sensors

scholarly journals A Combined Positioning Method Used for Identification of Concrete Cracks

Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1479
Author(s):  
Jianzhi Li ◽  
Bohao Shen ◽  
Junjie Wang
Keyword(s):  
Structural Damage ◽  
Fiber Optic ◽  
Brillouin Scattering ◽  
Fiber Type ◽  
Continuous Distribution ◽  
Fiber Optic Sensors ◽  
Reinforced Concrete Beams ◽  
Fiber Grating ◽  
Coupling Mechanism ◽  
Positioning Method

Fully distributed fiber optic sensors are characteristically used for the measurement of long distances and continuous distribution of space. However, due to the different fiber type, fiber length, ambient temperature and strain, fully distributed fiber optic sensors fail to locate damage accurately and cause a greater error. Therefore, this paper proposes a new positioning method of combining fully distributed fiber optic sensors with fiber Bragg gratings, which enables accurately the localization of a structural damage during the long-term monitoring of fully distributed fiber optic sensors. Moreover, the coupling mechanism of the reflected light from fiber grating and excited Brillouin scattering light is illustrated. Further, it is experimentally verified by locating the cracks of 2 m long reinforced concrete beams. The experimental results show that this proposed method is capable of monitoring the generation of the beam crack and further locating the crack on the concrete beam with an approximate error of 10 cm.

Improving the Performance of Brillouin Scattering-based Distributed Fiber Optic Sensors: Recent Advancement

2021 ◽  
Author(s):  
Mohd Saiful Dzulkefly Zan ◽  
Mohamed M. Elgaud ◽  
Ahmed Sabri Kadhim ◽  
Ahmad Ashrif A. Bakar
Keyword(s):  
Fiber Optic ◽  
Brillouin Scattering ◽  
Fiber Optic Sensors ◽  
Recent Advancement

scholarly journals Recent Advancement of Anti-Resonant Hollow-Core Fibers for Sensing Applications

Photonics ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 128
Author(s):  
Wenjun Ni ◽  
Chunyong Yang ◽  
Yiyang Luo ◽  
Ran Xia ◽  
Ping Lu ◽  
...  
Keyword(s):  
Recent Progress ◽  
Fiber Optic ◽  
Fiber Optic Sensors ◽  
Hollow Core ◽  
Hollow Structures ◽  
Sensing Applications ◽  
Sensing Platform ◽  
Wide Range ◽  
Recent Advancement ◽  
Large Measurement

Specialty fibers have enabled a wide range of sensing applications. Particularly, with the recent advancement of anti-resonant effects, specialty fibers with hollow structures offer a unique sensing platform to achieve highly accurate and ultra-compact fiber optic sensors with large measurement ranges. This review presents an overview of recent progress in anti-resonant hollow-core fibers for sensing applications. Both regular and irregular-shaped fibers and their performance in various sensing scenarios are summarized. Finally, the challenges and possible solutions are briefly presented with some perspectives toward the future development of anti-resonant hollow-core fibers for advanced sensing.

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