DocumentCode
1252295
Title
Identical broadband chirped grating interrogation technique for temperature and strain sensing
Author
Fallon, R.W. ; Zhang, Leiqi ; Gloag, A. ; Bennion, I.
Author_Institution
Dept. of Electr. & Electron. Eng. & Appl. Phys., Aston Univ., Birmingham
Volume
33
Issue
8
fYear
1997
fDate
4/10/1997 12:00:00 AM
Firstpage
705
Lastpage
707
Abstract
The authors propose a simple, low-cost technique for the interrogation of fibre Bragg grating (FBG) sensors. The induced mismatch between two identical broadband fibre chirped gratings is used to provide a mechanism for measuring changes in strain/temperature associated with one grating. A linear relationship with detected optical power is seen with a 10 nm chirp rate facilitating sensing ranges up to 9000 με and 750°C for strain and temperature change, respectively
Keywords
chirp modulation; diffraction gratings; fibre optic sensors; optical modulation; strain sensors; temperature sensors; 750 degC; broadband chirped grating interrogation technique; chirp rate; detected optical power; fibre Bragg grating sensors; induced mismatch; linear relationship; sensing ranges; strain sensing; temperature sensing;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19970486
Filename
591114
Link To Document