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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 6 — Feb. 20, 2004
  • pp: 1337–1341

Absolute Strain Measurements Made with Fiber Bragg Grating Sensors

In C. Song, Sun K. Lee, Sung H. Jeong, and Byeong H. Lee  »View Author Affiliations


Applied Optics, Vol. 43, Issue 6, pp. 1337-1341 (2004)
http://dx.doi.org/10.1364/AO.43.001337


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Abstract

A strain sensor system based on optical fiber Bragg gratings (FBGs) is proposed with a new matched-filter design. The strain variation on the sensor FBG is continuously followed and matched by a filter FBG by use of a feedback control loop that produces an identical strain condition on the filter FBG. The matched strain on the filter FBG is then determined from the resonance vibration of the fiber piece embedding the filter FBG. The implementation and the performance of the proposed system are described. It is demonstrated that the proposed system can distinguish strain variation on the sensor FBG with resolution of one microstrain.

© 2004 Optical Society of America

OCIS Codes
(000.2170) General : Equipment and techniques
(050.2770) Diffraction and gratings : Gratings
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors

Citation
In C. Song, Sun K. Lee, Sung H. Jeong, and Byeong H. Lee, "Absolute Strain Measurements Made with Fiber Bragg Grating Sensors," Appl. Opt. 43, 1337-1341 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-6-1337

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