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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 15 — Aug. 1, 2006
  • pp: 2269–2271

Temperature-insensitive fiber Bragg grating dynamic pressure sensing system

Tuan Guo, Qida Zhao, Hao Zhang, Chunshu Zhang, Guiling Huang, Lifang Xue, and Xiaoyi Dong  »View Author Affiliations


Optics Letters, Vol. 31, Issue 15, pp. 2269-2271 (2006)
http://dx.doi.org/10.1364/OL.31.002269


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Abstract

Temperature-insensitive dynamic pressure measurement using a single fiber Bragg grating (FBG) based on reflection spectrum bandwidth modulation and optical power detection is proposed. A specifically designed double-hole cantilever beam is used to provide a pressure-induced axial strain gradient along the sensing FBG and is also used to modulate the reflection bandwidth of the grating. The bandwidth modulation is immune to spatially uniform temperature effects, and the pressure can be unambiguously determined by measuring the reflected optical power, avoiding the complex wavelength interrogation system. The system acquisition time is up to 85 Hz for dynamic pressure measurement, and the thermal fluctuation is kept less than 1.2% full-scale for a temperature range of 10 ° C to 80 ° C .

© 2006 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.0230) Optical devices : Optical devices
(230.1480) Optical devices : Bragg reflectors

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: March 30, 2006
Revised Manuscript: May 15, 2006
Manuscript Accepted: May 19, 2006
Published: July 10, 2006

Citation
Tuan Guo, Qida Zhao, Hao Zhang, Chunshu Zhang, Guiling Huang, Lifang Xue, and Xiaoyi Dong, "Temperature-insensitive fiber Bragg grating dynamic pressure sensing system," Opt. Lett. 31, 2269-2271 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-15-2269


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References

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