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Title: Highly sensitive long-period fiber-grating strain sensor with low temperature sensitivity
Authors: Wang, Y
Xiao, L
Wang, D 
Jin, W 
Issue Date: 1-Dec-2006
Source: Optics letters, 1 Dec. 2006, v. 31, no. 23, p. 3414-3416
Abstract: A long-period fiber-grating sensor with a high strain sensitivity of −7.6 pm/με and a low temperature sensitivity of 3.91 pm/°C is fabricated by use of focused CO₂ laser beam to carve periodic grooves on a large- mode-area photonic crystal fiber. Such a strain sensor can effectively reduce the cross-sensitivity between strain and temperature, and the temperature-induced strain error obtained is only 0.5 με/°C without using temperature compensation.
Keywords: Diffraction gratings
Laser beams
Optical fibers
Strain
Publisher: Optical Society of America
Journal: Optics letters 
ISSN: 0146-9592
EISSN: 1539-4794
DOI: 10.1364/OL.31.003414
Rights: © 2006 Optical Society of America. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-23-3414. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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