Development of a linear fiber optic pressure sensor

Author

Saad, M.R. ; Rehman, M. ; Siddiqui, Othman

Author_Institution

Sch. of Electr. & Electron. Eng., USM, Penang, Malaysia

fYear

2004

fDate

19-20 Oct. 2004

Firstpage

45

Lastpage

47

Abstract

This paper deals with the theory, design, fabrication and test results of a fiber optic pressure sensor. It employs intensity modulation and diaphragm type elastic pressure sensor. The distance between diaphragm and optical fiber probe plays important role in achieving linearity and accuracy of measurement. It is designed in such a way that it can measure differential as well as gauge pressures. Prototype model was calibrated up to 6.6 kN/m² and has a sensitivity of 200 mV/kN/m². Range as well as sensitivity can be further increased with proper selection of diaphragm and its polish. Sources of error and their minimization have been discussed.

Keywords

fibre optic sensors; optical design techniques; optical fibre fabrication; optical fibre testing; optical modulation; pressure sensors; diaphragm type elastic pressure sensor; differential pressure measurement; error minimization; fiber optic sensor; fiber optic sensor design; fiber optic sensor fabrication; fiber optic sensor testing; gauge pressure measurement; intensity modulation; measurement accuracy; measurement linearity; optical fiber probe; pressure sensor; prototype model calibration; sensitivity; Intensity modulation; Optical attenuators; Optical fiber sensors; Optical fibers; Optical receivers; Optical sensors; Optical transmitters; Pressure measurement; Probes; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightwave Technologies in Instrumentation and Measurement Conference, 2004. Proceedings of the

Print_ISBN

0-7803-8722-8

Type

conf

DOI

10.1109/LTIMC.2004.1370988

Filename

1370988