Simultaneous temperature and strain measurements performed by a step-changed arc-induced long-period fiber grating

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Gaspar Rego (Author) Other; Rosane Falate (Author) Other; Oleg Ivanov (Author) Other; Jose Luis Santos (Author) FCUP

Journal

Title: Applied Optics

Vol. 46

Pages: 1392-1396

ISSN: 1559-128X

Publisher: Optical Society of America

Indexing

ISI Web of Knowledge - 27 Citations

Scopus - 33 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-004-B50

DOI: 10.1364/ao.46.001392

Abstract (EN): A compact sensor based on step-changed are-induced long-period fiber gratings was implemented to discriminate between temperature and strain. The proposed sensor consists of a single long-period grating with two sections written consecutively in the SMF-28 fiber using the electric are discharge technique. The two sections have the same period but different fabrication parameters. The operation of the sensor relies on the existence of a difference between the values of temperature and strain sensitivity of two neighboring resonances observed in the spectrum of the step-changed grating. The temperature and strain resolutions obtained for the sensor are 0.2 degrees C and 35 mu epsilon, respectively. (c) 2007 Optical Society of America.

Language: English

Type (Professor's evaluation): Scientific