Simultaneous temperature and bend sensing with long-period fiber gratings
Optics Letters, Vol. 25, Issue 14, pp. 1007-1009 (2000)
http://dx.doi.org/10.1364/OL.25.001007
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Abstract
Long-period gratings (LPG's) written in commercially available boron-codoped fibers operating at wavelengths of <1.1μm are shown to exhibit high temperature and bending sensitivities. Each resonant attenuation band of such LPG's was observed to split in two when the LPG's were bent. The split attenuation bands' separation increased significantly with increasing bend curvature, and the central wavelengths of the split bands provided a measure of temperature. We exploit this effect to allow for simultaneous measurement of temperature and bending in smart-structure applications. The demonstrated novel sensor system is simple and low cost.
© 2000 Optical Society of America
OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(350.2770) Other areas of optics : Gratings
Citation
C. C. Ye, S. W. James, and R. P. Tatam, "Simultaneous temperature and bend sensing with long-period fiber gratings," Opt. Lett. 25, 1007-1009 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-14-1007
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