Simultaneous measurement of strain and temperature using a Bragg grating structure written in germanosilicate fibres

• Type: Article in International Scientific Journal
• Date: 2004

Authors

Frazao, O (Author) Other; Santos, JL (Author) FCUP

Journal

Title: Journal of Optics A: Pure and Applied Optics

Vol. 6

Pages: 553-556

ISSN: 1464-4258

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 43 Citations

Scopus - 50 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-000-A6X

DOI: 10.1088/1464-4258/6/6/010

Abstract (EN): A fibre Bragg grating sensing configuration is presented for simultaneous measurement of strain and temperature. The proposed concept relies on writing a single Bragg grating on the splice region of two fibres with different levels of germanium doping. Doing so, a grating structure appears with three resonance peaks, which show distinct temperature sensitivities but similar strain responses. The experimental validation of the concept indicated resolutions of +/-1.5 degreesC Hz(-1/2) and +/-5.6 muepsilon Hz(-1/2) over measurement ranges of 80 degreesC and 1000 muepsilon for temperature and strain, respectively.

Language: English

Type (Professor's evaluation): Scientific