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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 31 — Nov. 1, 2006
  • pp: 8132–8135

Method for enhancing temperature sensitivity of fiber Bragg gratings based on bimetallic sheets

Lifang Xue, Jianguo Liu, Yange Liu, Long Jin, Shiyu Gao, Bo Dong, Qida Zhao, and Xiaoyi Dong  »View Author Affiliations

Applied Optics, Vol. 45, Issue 31, pp. 8132-8135 (2006)

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We designed what is believed to be a novel structure based on bimetallic sheets to enhance temperature sensitivity of fiber Bragg gratings. The two ends of bimetallic sheets were fixed by bolts, and a fiber Bragg grating was longitudinally affixed to one of the sheets whose expansion coefficient was larger than that of the other. The theoretical and experimental results show that the temperature sensitivity of the fiber Bragg grating was enhanced dramatically by the structure. For example, the temperature sensitivity reached 0.08014 nm / ° C when the bimetallic sheets were made of aluminum and iron, which are more than eight times that of a bare fiber Bragg grating. Moreover, it was experimentally demonstrated that the structure has excellent linearity, reversibility, and stability.

© 2006 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors

Original Manuscript: March 7, 2006
Revised Manuscript: June 11, 2006
Manuscript Accepted: June 30, 2006

Lifang Xue, Jianguo Liu, Yange Liu, Long Jin, Shiyu Gao, Bo Dong, Qida Zhao, and Xiaoyi Dong, "Method for enhancing temperature sensitivity of fiber Bragg gratings based on bimetallic sheets," Appl. Opt. 45, 8132-8135 (2006)

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