Strain-temperature discrimination using a step spectrum profile fibre Bragg grating arrangement

• Type: Article in International Scientific Journal
• Date: 2005

Authors

Frazao, O (Author) Other; Romero, R (Author) Other; Araujo, FM (Author) Other; Ferreira, LA (Author) Other; Santos, JL (Author) FCUP

Journal

Title: Sensors and Actuators, A: Physical

Vol. 120

Pages: 490-493

ISSN: 0924-4247

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 20 Citations

Scopus - 28 Citations

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

Other information

Authenticus ID: P-000-3AD

DOI: 10.1016/j.sna.2005.02.006

Abstract (EN): A sensing head for simultaneous measurement of temperature and strain is presented and analyzed. The proposed configuration is based on the combination of two Bragg gratings, written in different fibres and with different reflectivities, to form a single signature with a reflected step spectrum profile. This characteristic minimizes the spectrum allocated to each sensor in a series multiplexing topology. By measuring the changes in the peak wavelength and spectral width of this signature, resolutions of +/- 0.65 degrees C/root Hz and +/- 2.55 mu epsilon/root Hz were achieved for temperature and strain measurements, respectively.

Language: English

Type (Professor's evaluation): Scientific