A Robust and Compact Fiber Bragg Grating Vibration Sensor for Seismic Measurement

Author

Weng, Yinyan ; Qiao, Xueguang ; Guo, Tuan ; Hu, Manli ; Feng, Zhongyao ; Wang, Ruohui ; Zhang, Jing

Author_Institution

Dept. of Phys., Northwest Univ., Xi´´an, China

Volume

12

Issue

4

fYear

0

fDate

4/1/2000 12:00:00 AM

Firstpage

800

Lastpage

804

Abstract

A compact fiber Bragg grating (FBG) vibration sensor consisting a flat diaphragm and two L-shaped rigid cantilever beams for seismic measurement has been proposed and experimentally demonstrated. The specially designed sensing configuration contributes many desirable features such as a wide frequency response range (10-120 Hz), an extremely high sensitivity coefficient (~100pm/g) together with a robust metal package for improving the mechanical strength and a decreased transverse sensitivity (<; 5%), making it a good candidate for in-field seismic wave measurement in oil and gas exploration.

Keywords

Bragg gratings; beams (structures); cantilevers; diaphragms; geophysical prospecting; hydrocarbon reservoirs; optical fibres; seismic waves; seismology; vibration measurement; fiber Bragg grating vibration sensor; flat diaphragm; gas exploration; mechanical strength; oil exploration; rigid cantilever beam; robust metal package; seismic measurement; transverse sensitivity; Accelerometers; Educational institutions; Fiber gratings; Optical fiber sensors; Sensitivity; Vibrations; Cantilever beam; fiber Bragg grating (FBG); vibration sensor;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2011.2166258

Filename

6003733