Strain and curvature-independent temperature sensor based on an interferometer taper fabricated with a CO2 laser

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Martins, TJM (Author) Other; marques, mb (Author) FCUP; Frazao, O (Author) FCUP

Journal

Title: Microwave and Optical Technology Letters

Vol. 58

Pages: 688-691

ISSN: 0895-2477

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 1 Citation

Other information

Authenticus ID: P-00K-4WG

DOI: 10.1002/mop.29640

Abstract (EN): An optical fiber interferometer taper fabricated with a CO2 laser is proposed for strain and curvature-independent temperature measurement. Variations in temperature produce changes in the conditions of the interference between light traveling along the core and cladding and a linear behavior is verified for the relation between the wavelength of the resonant loss peak and temperature, yielding a sensitivity of 110 pm/degrees C for a range between 25 and 510 degrees C. Both the applied strain and curvature only promote significant changes in the transmitted power, leaving the wavelength of the resonant loss peak approximately constant and rendering this optical sensing device a good strain and curvature-independent temperature sensor. (c) 2016 Wiley Periodicals, Inc.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4