Static-strain sensitivity optimization of fiber optic extrinsic Fabry-Perot interferometric strain gauge

1993 ◽  
Author(s):  
Gregory M. Nau ◽  
Venkatapura S. Sudarshanam ◽  
Richard O. Claus
Keyword(s):  
Strain Gauge ◽  
Fiber Optic ◽  
Strain Sensitivity ◽  
Static Strain ◽  
Fabry Perot

A fiber optic, Fabry–Perot strain gauge calibrator

2007 ◽  
Vol 16 (5) ◽  
pp. 1931-1935
Author(s):  
Abdeq M Abdi ◽  
Alan R Kost
Keyword(s):  
Strain Gauge ◽  
Fiber Optic ◽  
Fabry Perot

scholarly journals Applying fiber-optic system to control shaft torque

2021 ◽  
Vol 2021 (3) ◽  
pp. 101-106
Author(s):  
Alexander Sergeevich Bordyug
Keyword(s):  
Strain Gauge ◽  
Electromagnetic Interference ◽  
Oil And Gas ◽  
Fiber Optic ◽  
Electrical Equipment ◽  
Torque Control ◽  
Measuring System ◽  
Degree Of Protection ◽  
Fabry Perot ◽  
Fiber Optic System

The article considers the procedure of torque control, which is very popular in a wide variety of industries with many design features. In marine power engineering the problems of determining the forces, torque on the shaft and power are solved by means of torsiometers with torque sensors. The most widely used torque sensors are of capacitive, induction, strain gauge and photoelectric types. It has been stated that there are limitations in the process of torque control due to the susceptibility of systems to the electromagnetic interference, lack of a high degree of protection for electrical equipment and necessary recalibration. Fiber optic systems have found application in torque measurement systems in the oil and gas and aerospace industries. The use of such systems on ships is more expensive in comparison with the technologies used today, for example, the systems based on strain gauges. It has been proposed to use an inexpensive optical measuring system based on the Pound-Drever-Hall technique with using a foil-clad strain gauge and an aluminum torsion rod. There has been illustrated the system of torque control, the phase graphs for the Fabry-Perot resonator and the graph of the resonator transmission spectrum are presented, the reflection coefficient value is given. A method for measuring the phase of a reflected beam from a Fabry-Perot resonator is being considered, the injection current of a laser is modulated by means of an electric oscillator to generate side stripes in the electric field of a laser beam. The carried out studies and calculations contribute to improving the reliability of the coastal power system; the possibility of their use in marine electrical systems has been proved.

New Fabry-Perot Fiber-Optic Sensors for Structural and Geotechnical Monitoring Applications

1997 ◽  
Vol 1596 (1) ◽  
pp. 39-44 ◽  
Author(s):  
P. Choquet ◽  
R. Leroux ◽  
F. Juneau
Keyword(s):  
Strain Gauge ◽  
Fiber Optic ◽  
Fiber Optic Sensors ◽  
Strain Gauges ◽  
Surface Type ◽  
Geotechnical Monitoring ◽  
Fabry Perot ◽  
Monitoring Applications ◽  
New Sensors ◽  
Accuracy And Repeatability

A new line of fiber-optic sensors suited for structural and geotechnical monitoring purposes is presented. A Fabry-Perot strain gauge is contained in each of the new sensors introduced here: four embedded and surface-type strain gauges and one type of temperature gauge. Described here are the working and reading principles of the basic Fabry-Perot strain gauge. One of the gauge’s features that allows for temperature-compensated or noncompensated measurements is described, and the various sensors constructed around the gauge are presented. These newly developed sensors exhibit high accuracy and repeatability, as illustrated by various calibration tests reported here.

Fiber optic Fabry-Perot strain gauge

1990 ◽  
Vol 2 (3) ◽  
pp. 227-228 ◽  
Author(s):  
T. Valis ◽  
D. Hogg ◽  
R.M. Measures
Keyword(s):  
Strain Gauge ◽  
Fiber Optic ◽  
Fabry Perot

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
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