Distributed feedback fiber laser sensor for hydrostatic pressure

Author

Frank, A. ; Bohnert, K. ; Haroud, K. ; Brändle, H. ; Poulsen, C.V. ; Pedersen, J.E. ; Patscheider, J.

Author_Institution

Corporate Res., ABB Switzerland Ltd., Baden, Switzerland

Volume

15

Issue

12

fYear

2003

Firstpage

1758

Lastpage

1760

Abstract

A polarimetric distributed feedback fiber laser sensor for the measurement of fluid pressure up to 50 MPa is investigated between room temperature and 250/spl deg/C. The isotropic pressure acts directly on the fiber, which eliminates the need of a mechanical transducer. A pressure resolution of about 20 kPa (0.2 bar) is demonstrated. Furthermore, the protection of the silica fiber against deterioration by the fluid and the thermomechanical effects of various fiber coatings on the sensor response are studied.

Keywords

distributed feedback lasers; fibre lasers; fibre optic sensors; pressure sensors; pressure transducers; 20 to 250 C; 50 MPa; distributed feedback fiber laser sensor; fiber coatings; hydrostatic pressure; pressure resolution; sensor response; thermomechanical effects; Distributed feedback devices; Fiber lasers; Laser feedback; Mechanical sensors; Optical fiber sensors; Pressure measurement; Protection; Silicon compounds; Temperature sensors; Transducers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2003.819717

Filename

1253526