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Discrimination between strain and temperature with a single fiber Bragg grating
Author(s) -
Guan BaiOu,
Tam HwaYaw,
Chan Helen L. W.,
Choy ChungLoong,
Demokan Muhtesem Süleyman
Publication year - 2002
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10275
Subject(s) - fiber bragg grating , materials science , grating , thermal expansion , strain (injury) , refractive index , resonance (particle physics) , microwave , optics , substrate (aquarium) , optoelectronics , composite material , physics , telecommunications , engineering , wavelength , medicine , oceanography , particle physics , geology
A new scheme is proposed for simultaneous strain and temperature measurement with a single‐fiber Bragg grating. The grating sensor was written on the splice joint between two fibers and has two resonance peaks because of the different refractive index between the two fibers. By bonding one section of the grating onto the substrate of large thermal expansion coefficient, the two resonance peaks exhibit different strain and temperature response and can thus be used for strain/temperature discrimination. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 33: 200–202, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10275