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Applied Optics

Applied Optics


  • Vol. 38, Iss. 13 — May. 1, 1999
  • pp: 2749–2751

Simultaneous measurement of strain and temperature by use of a single-fiber Bragg grating and an erbium-doped fiber amplifier

Jaehoon Jung, Hui Nam, Ju Han Lee, Namkyoo Park, and Byoungho Lee  »View Author Affiliations

Applied Optics, Vol. 38, Issue 13, pp. 2749-2751 (1999)

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We propose and demonstrate a novel sensor by using a single-fiber Bragg grating that can simultaneously measure strain and temperature with the aid of an erbium-doped fiber amplifier. By using a linear variation in the amplified spontaneous emission power of the erbium-doped fiber amplifier with temperature, we determine the temperature. By subtracting the temperature effect from the fiber Bragg grating Bragg wavelength shift, we determine the strain. Experiments show rms deviations of 18.2 µε and 0.7 °C for strain and temperature, respectively.

© 1999 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
(060.2410) Fiber optics and optical communications : Fibers, erbium

Original Manuscript: September 14, 1998
Revised Manuscript: December 24, 1998
Published: May 1, 1999

Jaehoon Jung, Hui Nam, Ju Han Lee, Namkyoo Park, and Byoungho Lee, "Simultaneous measurement of strain and temperature by use of a single-fiber Bragg grating and an erbium-doped fiber amplifier," Appl. Opt. 38, 2749-2751 (1999)

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