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Proceedings Paper

Long-period fiber gratings for simultaneous temperature and bend sensing
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Paper Abstract

Long-period fiber gratings (LPGs) written into commercially available boron co-doped fibers operating at wavelengths < 1.1 micrometers are shown to exhibit high temperature- and bending-sensitivities. Each resonant attenuation band of such a LPG was observed to split into two when the LPG was bent. The split attenuation bands' separation increased significantly with increasing bend curvature, while the central wavelengths of the split bands provided a measure of temperature. This effect is exploited to allow simultaneous measurement of temperature and bending in smart structure applications. The demonstrated novel sensor system is simple and low cost.

Paper Details

Date Published: 31 August 2000
PDF: 8 pages
Proc. SPIE 4074, Applications of Optical Fiber Sensors, (31 August 2000); doi: 10.1117/12.397896
Show Author Affiliations
Chen-Chun Ye, Cranfield Univ. (United Kingdom)
Stephen W. James, Cranfield Univ. (United Kingdom)
Ralph P. Tatam, Cranfield Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 4074:
Applications of Optical Fiber Sensors
Alan J. Rogers, Editor(s)

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