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Temperature‐insensitive 2D fiber Bragg grating TILT sensor
Author(s) -
Dong Xinyong,
Hu Limin,
Shao Liyang,
Wang Yunpeng,
Zheng Jie
Publication year - 2013
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.27281
Subject(s) - tilt (camera) , fiber bragg grating , tilt sensor , materials science , optics , cantilever , pendulum , microwave , optical fiber , optoelectronics , physics , engineering , structural engineering , quantum mechanics , composite material
A novel temperature‐insensitive tilt sensor is proposed based on two fiber Bragg gratings (FBGs), which were embedded in a cylindrical cantilever‐based pendulum in two orthogonal planes. Tilt‐induced bending of the pendulum changes bandwidths and hence reflected optical powers of the two FBGs. Intensity‐measurements of two‐dimensional (2D) tilt angles can be realized without temperature dependence. Theoretical analysis and experimental verification have been carried out. Sensitivity of 42.97 nW/° with measurement accuracy of 0.27° has been achieved over a range up to ±15°. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:344–346, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27281