Dynamic pressure sensing with a side-hole birefringent optical fiber

1991 ◽  
Vol 16 (13) ◽  
pp. 1043 ◽  
Author(s):  
M. N. Charasse ◽  
M. Turpin ◽  
J. P. Le Pesant
Keyword(s):  
Optical Fiber ◽  
Dynamic Pressure ◽  
Pressure Sensing ◽  
Side Hole ◽  
Birefringent Optical Fiber

Studies of temperature-insensitive dynamic pressure sensing using elliptical-core side-hole fibers

2003 ◽  
Author(s):  
Wojtek J. Bock ◽  
Magdalena S. Nawrocka ◽  
Waclaw Urbanczyk ◽  
Jan Wojcik
Keyword(s):  
Dynamic Pressure ◽  
Pressure Sensing ◽  
Side Hole ◽  
Elliptical Core

scholarly journals Investigation of Group Birefringence of Polarisation Maintaining Highly Birefringent Optical Fiber

2020 ELEKTRO ◽  
2020 ◽  
Author(s):  
Norbert Tarjanyi ◽  
Daniel Kacik ◽  
Raphael Jamier ◽  
Georges Humbert ◽  
Philippe Roy ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Birefringent Optical Fiber

Range Tunable Optical Fiber Micro-Fabry–Pérot Interferometer for Pressure Sensing

2016 ◽  
Vol 28 (4) ◽  
pp. 402-405 ◽  
Author(s):  
Honglin Liu ◽  
D. N. Wang ◽  
Jibing Liu ◽  
Shen Liu
Keyword(s):  
Optical Fiber ◽  
Pressure Sensing ◽  
Fabry Perot

Application of side-hole fibers for dynamic pressure measurements

2000 ◽  
Author(s):  
Wojtek J. Bock ◽  
Magdalena S. Nawrocka ◽  
Waclaw Urbanczyk
Keyword(s):  
Dynamic Pressure ◽  
Pressure Measurements ◽  
Side Hole ◽  
Dynamic Pressure Measurements

Characterization of an axisymmetric birefringent optical fiber

2002 ◽  
Author(s):  
Mitsuhiro Tateda ◽  
Shingo Mori ◽  
Takashige Omatsu
Keyword(s):  
Optical Fiber ◽  
Birefringent Optical Fiber

Simplified technique for the adjustment of a birefringent optical fiber Sagnac interferometer

1999 ◽  
Author(s):  
Hector H. Cerecedo-Nunez ◽  
Evgueni A. Kuzin ◽  
Jose Javier Sanchez-Mondragon ◽  
Esteban Molina
Keyword(s):  
Optical Fiber ◽  
Sagnac Interferometer ◽  
Birefringent Optical Fiber

scholarly journals Study on Reasonable Size of Coal and Rock Pillar in Dynamic Pressure Roadway Segment of Fully Mechanized Face in Deep Shaft

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Binyang Sun ◽  
Pingsong Zhang ◽  
Haifeng Lu
Keyword(s):  
Optical Fiber ◽  
Dynamic Pressure ◽  
Time Domain Reflectometry ◽  
Geological Condition ◽  
Good Correspondence ◽  
Stress Variation ◽  
Rock Pillar ◽  
Working Face ◽  
Strata Deformation ◽  
Rock Strata

The deformation mechanism of the protective coal and rock pillar area outside a stope is an important parameter for setting a reasonable size. In this paper, based on the geological condition of working face 1231(1) in a mine in Huainan, a method that combines the use of a borehole and Brillouin optical time domain reflectometry (BOTDR) was proposed to analyze the stress variation laws of coal and rock pillar areas, and the parameters of the monitoring borehole and installation technique of the sensing optical cables were designed. Based on the monitoring data, the strain distribution characteristics of the sensing optical cables and their relationship with the rock strata were analyzed, the development law of coal and rock strata deformation during the mining process was revealed, and the transverse influence range of the coal and rock pillar affected by mining was reasonably divided. According to the results, the sensing optical cables show an overall trend of tensile strain, with a maximum value of 1800 με, and the main areas of rock strata deformation occur near the interface of rock strata. The range of rock strata disturbance along the borehole direction was approximately 38 m, and the maximum deformation of rock strata after the disturbance, namely, the displacement, was 24.87 mm. A numerical model was constructed to acquire the strain variation characteristic within 100 m in the outer floor of the working face. The transverse range of the floor disturbance was analyzed to be 30–36 m. The field test had good correspondence with the numerical simulation results, which indicates that the optical fiber testing technology can effectively describe the stress variation in the coal and rock strata. The test results can provide technical support for the rational setting of coal and rock pillars and disaster prevention and control. The research direction of deep rock mass testing is discussed, and optical fiber testing in boreholes is considered an effective method for studying deep dynamic disaster control.

scholarly journals Fully distributed pressure sensing with ultra-high-sensitivity using side-hole fibers

2018 ◽  
Author(s):  
Li Zhang ◽  
Zhisheng Yang ◽  
Łukasz Szostkiewicz ◽  
Krzysztof Markiewicz ◽  
Tomasz Nasilowski ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Pressure Sensing ◽  
Side Hole ◽  
Distributed Pressure
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