Hybrid LPFG/MEFPI sensor for simultaneous measurement of high-temperature and strain
Optics Express, Vol. 15, Issue 22, pp. 14936-14941 (2007)
http://dx.doi.org/10.1364/OE.15.014936
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Abstract
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
History
Original Manuscript: July 27, 2007
Revised Manuscript: September 11, 2007
Manuscript Accepted: September 12, 2007
Published: October 26, 2007
Citation
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)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-22-14936
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