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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 22 — Oct. 29, 2007
  • pp: 14936–14941

Hybrid LPFG/MEFPI sensor for simultaneous measurement of high-temperature and strain

Yun-Jiang Rao, Zeng-Ling Ran, Xian Liao, and Hong-You Deng  »View Author Affiliations

Optics Express, Vol. 15, Issue 22, pp. 14936-14941 (2007)

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A hybrid fiber-optic sensor consisting of a long-period fiber grating (LPFG) and a micro extrinsic Fabry-Perot (F-P) interferometric (MEFPI) sensor is proposed and demonstrated for simultaneous measurement of high-temperature and strain. The LPFG written by using high-frequency CO2 laser pulses is used for high-temperature measurement while the MEFPI sensor fabricated by using 157nm F2 laser pulses is used for strain measurement under high temperature. The distinguishing feature of such a hybrid fiber-optic sensor is that it can stand for high temperature of up to 650°C and achieve precise measurement of strain under high temperature conditions simultaneously.

© 2007 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(350.3390) Other areas of optics : Laser materials processing

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: July 27, 2007
Revised Manuscript: September 11, 2007
Manuscript Accepted: September 12, 2007
Published: October 26, 2007

Yun-Jiang Rao, Zeng-ling Ran, Xian Liao, and Hong-you Deng, "Hybrid LPFG/MEFPI sensor for simultaneous measurement of high-temperature and strain," Opt. Express 15, 14936-14941 (2007)

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