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Temperature sensing with different coated metals on fiber Bragg grating sensors
Author(s) -
Seo Chulhun,
Kim Taesun
Publication year - 1999
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/(sici)1098-2760(19990505)21:3<162::aid-mop2>3.0.co;2-5
Subject(s) - fiber bragg grating , materials science , thermal expansion , microwave , temperature measurement , fiber optic sensor , optics , wavelength , tension (geology) , optical fiber , thermal , optoelectronics , fiber , composite material , physics , telecommunications , engineering , quantum mechanics , meteorology , ultimate tensile strength
A new temperature‐sensing system is proposed in this paper. This sensing system is not sensitive to strain response. The technique employs two fiber gratings with coated metals which have different thermal expansion coefficients and the same physical tension coefficients to measure temperature response. The temperature can be determined by the Bragg wavelength difference between the two coated FGBs. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 21: 162–165, 1999.