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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 4 — Feb. 1, 2008
  • pp: 556–560

Temperature-insensitive fiber Bragg grating tilt sensor

Hsuan-Jen Chen, Likarn Wang, and W. F. Liu  »View Author Affiliations

Applied Optics, Vol. 47, Issue 4, pp. 556-560 (2008)

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A temperature-insensitive optical fiber tilt sensor is presented. The sensor scheme uses a prestrained fiber Bragg grating to sense the strain, which depends on the tilt angle. To compensate for the temperature effect, materials that have different linear thermal expansion behaviors are used for implementation of the sensor body. The differentiation in the linear thermal expansion would then cause a counter effect to the original temperature effect. Experimental tests show an accuracy of ± 0.167 ° in tilt angle measurement. A temperature stability better than ± 0.33 ° over the temperature range from 27 ° C to 75 ° C is demonstrated. The resolution 0.0067° in tilt angle measurement is achieved by using our preliminary sensor with a dimension of 16 × 5 × 5 cm 3 .

© 2008 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

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 11, 2007
Revised Manuscript: September 24, 2007
Manuscript Accepted: November 9, 2007
Published: January 25, 2008

Hsuan-Jen Chen, Likarn Wang, and W. F. Liu, "Temperature-insensitive fiber Bragg grating tilt sensor," Appl. Opt. 47, 556-560 (2008)

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