Fiber-Optic Static-Strain Sensing with Single & Dual Fiber Fabry-Perot Interferometers

2020 ◽  
Author(s):  
Nabil Md Rakinul Hoque ◽  
Lingze Duan
Keyword(s):  
Fiber Optic ◽  
Strain Sensing ◽  
Static Strain ◽  
Fabry Perot

High-resolution absolute frequency referenced fiber optic sensor for quasi-static strain sensing

2010 ◽  
Vol 49 (21) ◽  
pp. 4029 ◽  
Author(s):  
Timothy T.-Y. Lam ◽  
Jong H. Chow ◽  
Daniel A. Shaddock ◽  
Ian C. M. Littler ◽  
Gianluca Gagliardi ◽  
...  
Keyword(s):  
High Resolution ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Strain Sensing ◽  
Absolute Frequency ◽  
Static Strain ◽  
Optic Sensor

scholarly journals Microanchored borehole fiber optics allows strain profiling of the shallow subsurface

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Cheng-Cheng Zhang ◽  
Bin Shi ◽  
Song Zhang ◽  
Kai Gu ◽  
Su-Ping Liu ◽  
...  
Keyword(s):  
Fiber Optics ◽  
Field Experiments ◽  
Fiber Optic ◽  
Strain Sensing ◽  
Near Surface ◽  
Shallow Subsurface ◽  
Buried Cables ◽  
Capacity Theory ◽  
Confining Pressures ◽  
Strain Determination

AbstractVertical deformation profiles of subterranean geological formations are conventionally measured by borehole extensometry. Distributed strain sensing (DSS) paired with fiber-optic cables installed in the ground opens up possibilities for acquiring high-resolution static and quasistatic strain profiles of deforming strata, but it is currently limited by reduced data quality due to complicated patterns of interaction between the buried cables and their surroundings, especially in upper soil layers under low confining pressures. Extending recent DSS studies, we present an improved approach using microanchored fiber-optic cables—designed to optimize ground-to-cable coupling at the near surface—for strain determination along entire lengths of vertical boreholes. We proposed a novel criterion for soil–cable coupling evaluation based on the geotechnical bearing capacity theory. We applied this enhanced methodology to monitor groundwater-related vertical motions in both laboratory and field experiments. Corroborating extensometer recordings, acquired simultaneously, validated fiber optically determined displacements, suggesting microanchored DSS as an improved means for detecting and monitoring shallow subsurface strain profiles.

scholarly journals Low-pressure and liquid level fiber‐optic sensor based on polymeric Fabry–Perot cavity

2021 ◽  
Vol 53 (5) ◽  
Author(s):  
D. Jauregui-Vazquez ◽  
M. E. Gutierrez-Rivera ◽  
D. F. Garcia-Mina ◽  
J. M. Sierra-Hernandez ◽  
E. Gallegos-Arellano ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Low Pressure ◽  
Fiber Optic Sensor ◽  
Liquid Level ◽  
Optic Sensor ◽  
Fabry Perot

Hybrid structured fiber-optic Fabry–Perot interferometer for simultaneous measurement of strain and temperature

2014 ◽  
Vol 39 (18) ◽  
pp. 5267 ◽  
Author(s):  
Ai Zhou ◽  
Boyang Qin ◽  
Zheng Zhu ◽  
Yaxun Zhang ◽  
Zhihai Liu ◽  
...  
Keyword(s):  
Simultaneous Measurement ◽  
Fiber Optic ◽  
Fabry Perot

Fiber-optic Fabry-Perot strain rosettes

1992 ◽  
Vol 1 (3) ◽  
pp. 227-232 ◽  
Author(s):  
T Valis ◽  
D Hogg ◽  
R M Measures
Keyword(s):  
Fiber Optic ◽  
Fabry Perot

scholarly journals The effect of fault architecture on slip behavior in shale revealed by distributed fiber optic strain sensing

2021 ◽  
Author(s):  
Chet Hopp ◽  
Yves Guglielmi ◽  
Antonio Pio Rinaldi ◽  
Florian Soom ◽  
Quinn Wenning ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Strain Sensing ◽  
Fault Architecture

Fiber-optic Fabry–Perot temperature sensor based on the ultraviolet curable glue-filled cavity and two-beam interference principle

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Jin Peng ◽  
Wenlin Feng ◽  
Zizheng Yue ◽  
Xiaozhan Yang
Keyword(s):  
Linear Correlation ◽  
Standard Error ◽  
Temperature Sensor ◽  
Potential Application ◽  
Fiber Optic ◽  
Average Sensitivity ◽  
Ultraviolet Curable ◽  
Fabry Perot ◽  
Maximum Fluctuation ◽  
Excellent Stability

AbstractAn ultraviolet curable glue (UCG)-filled microprobe Fabry–Perot fiber temperature sensor, which based on the two-beam interference principle, is proposed and fabricated. In the range of 25.7–250 °C, the average sensitivity and average linear correlation coefficient of the sensor are −41.69 pm/°C and 0.98558, respectively. Under the same temperature, the maximum fluctuation (0.56 pm) of the trough’s wavelength and the standard error (0.0023 ± 0.04%) are obtained. The proposed interferometer exhibits excellent stability and has a potential application in the field of temperature monitoring.

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