Ocean wave seismic and acoustic noise detected with distributed fiber optic sensor array

2013 ◽  
Vol 134 (5) ◽  
pp. 4180-4180
Author(s):  
Kent K. Hathaway ◽  
Richard D. Costley ◽  
Eric Smith ◽  
Troy Milburn ◽  
Jennifer R. Picucci
Keyword(s):  
Sensor Array ◽  
Fiber Optic ◽  
Acoustic Noise ◽  
Ocean Wave ◽  
Fiber Optic Sensor ◽  
Optic Sensor ◽  
Distributed Fiber Optic Sensor

scholarly journals High-quality hybrid TDM/DWDM-based fiber optic sensor array with extremely low crosstalk based on wavelength-cross-combination method

2017 ◽  
Vol 25 (23) ◽  
pp. 28870 ◽  
Author(s):  
Zhongjie Ren ◽  
Ke Cui ◽  
Jianxin Li ◽  
Rihong Zhu ◽  
Qing He ◽  
...  
Keyword(s):  
Sensor Array ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Combination Method ◽  
Cross Combination ◽  
High Quality ◽  
Optic Sensor

Disturbance Detection in Distributed Fiber-Optic Sensor Based on Time-Delay Estimation

2010 ◽  
Vol 30 (6) ◽  
pp. 1603-1607 ◽  
Author(s):  
许海燕 Xu Haiyan ◽  
徐锲 Xu Qie ◽  
肖倩 Xiao Qian ◽  
张毅 Zhang Yi ◽  
贾波 Jia Bo
Keyword(s):  
Time Delay ◽  
Fiber Optic ◽  
Time Delay Estimation ◽  
Fiber Optic Sensor ◽  
Delay Estimation ◽  
Optic Sensor ◽  
Distributed Fiber Optic Sensor ◽  
Disturbance Detection

High Spatial Resolution Crack Monitoring in Concrete Structures Using a Distributed Fiber Optic Sensor

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Kevin (Wenhai) Li ◽  
Michel Gaudet
Keyword(s):  
Spatial Resolution ◽  
Fiber Optic ◽  
High Spatial Resolution ◽  
Early Stage ◽  
Large Strain ◽  
Fiber Optic Sensor ◽  
Crack Location ◽  
Four Point Bending ◽  
Optic Sensor ◽  
Distributed Fiber Optic Sensor

Abstract A method to monitor the mechanical behavior and identify crack location and growth in a concrete structure element using a distributed fiber optic sensor (FOS) system is demonstrated experimentally by testing concrete specimens in four-point bending. The sensor system consisted of an optical frequency domain reflectometry (OFDR) interrogator unit paired with an all-grating sensing fiber that was bonded to the surface of the concrete test specimen. Strain measurements with high spatial resolution of <10 mm were obtained at various points along a single fiber cable. Large strain values at the crack locations indicated strain concentrations that could be used to assess the crack growth. The distributed sensing system demonstrated the capability to detect localized, early stage cracks, with crack width smaller than 0.1 mm, well before they become observable by visual inspection.

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