Simultaneous measurement of strain and temperature using Bragg gratings written in germanosilicate and boron-codoped germanosilicate fibers

• Type: Article in International Scientific Journal
• Date: 1999

Authors

Cavaleiro, PM (Author) Other; Araujo, FM (Author) Other; Ferreira, LA (Author) Other; Santos, JL (Author) FCUP; Farahi, F (Author) Other

Journal

Title: IEEE Photonics Technology Letters

Vol. 11

Pages: 1635-1637

ISSN: 1041-1135

Publisher: IEEE

Indexing

ISI Web of Knowledge - 114 Citations

Scopus - 149 Citations

Scientific classification

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

Other information

Authenticus ID: P-001-2NG

DOI: 10.1109/68.806871

Abstract (EN): A new fiber Bragg grating sensor configuration is presented for simultaneous measurement of strain and temperature. The sensor utilizes the effect of boron codoping on the temperature dependence of the refractive index in germanosilicate fibers. By writing gratings with close wavelengths in undoped and boron doped fibers, different temperature sensitivities are obtained while strain sensitivities remain the same. These gratings are then spliced to obtain a simple sensor head suitable for applications in smart structures and composite materials.

Language: English

Type (Professor's evaluation): Scientific