Temperature- and strain-independent torsion sensor using a fiber loop mirror based on suspended twin-core fiber

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Frazao, O (Author) FCUP; Silva, RM (Author) Other; Kobelke, J (Author) Other; Schuster, K (Author) Other

Journal

Title: Optics Letters

Vol. 35 No. 16

Pages: 2777-2779

ISSN: 0146-9592

Publisher: Optical Society of America

Indexing

ISI Web of Knowledge - 71 Citations

Scopus - 74 Citations

Other information

Authenticus ID: P-003-40J

DOI: 10.1364/ol.35.002777

Abstract (EN): In this Letter, we present a fiber loop mirror configuration based on a suspended twin-core fiber for sensing applications. Using the suspended twin-core fiber, the fringe pattern is due to the differential optical patch of the light in the two cores associated with a refractive index difference of similar to 10(-3), which indicates an advantage of this approach compared with those based on high-birefringent fibers, namely, the possibility of using a small length of fiber. The sensing configuration was characterized for torsion, temperature, and strain. Using the fast Fourier transform technique, it is possible to obtain measurand-induced amplitude variations of the fringe pattern. The results obtained indicate the viability of a temperature- and strain-independent torsion sensor. (C) 2010 Optical Society of America

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 3