Compensation for surface contamination in a D-fiber evanescent wave methane sensor

Author

Jin, W. ; Stewart, G. ; Wilkinson, M. ; Culshaw, B. ; Muhammad, F. ; Murray, S. ; Norris, J.O.W.

Author_Institution

Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK

Volume

13

Issue

6

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

1177

Lastpage

1183

Abstract

The effects of surface contamination on the performance of a D-fiber evanescent wave methane sensor are discussed. Contamination on the flat surface of the D-fiber will modify both the scale factor of the methane detection system and the birefringence of the D-fiber. The birefringence variation can be monitored and used to compensate for the scale factor variation, through one of the two compensation models which will be described in the text. The models are found to be fairly accurate, and for the D-fiber used in our experimental tests, the maximum relative error for scale factor correction is about ±5%, for both models

Keywords

birefringence; compensation; fibre optic sensors; gas sensors; modelling; surface contamination; D-fiber evanescent wave methane sensor; birefringence; compensation; compensation models; flat surface; gas sensors; maximum relative error; methane detection system; scale factor; scale factor correction; surface contamination; Absorption; Birefringence; Fabry-Perot; Laboratories; Optical fiber polarization; Optical surface waves; Power engineering and energy; Surface contamination; Surface waves; Tin;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.390236

Filename

390236