Long-period fiber gratings for simultaneous temperature and bend sensing

Chen-Chun Ye; Stephen W. James; Ralph P. Tatam

doi:10.1117/12.397896

31 August 2000 Long-period fiber gratings for simultaneous temperature and bend sensing

Chen-Chun Ye, Stephen W. James, Ralph P. Tatam

Proceedings Volume 4074, Applications of Optical Fiber Sensors; (2000) https://doi.org/10.1117/12.397896
Event: Symposium on Applied Photonics, 2000, Glasgow, United Kingdom

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.

Citation Download Citation

Chen-Chun Ye, Stephen W. James, and Ralph P. Tatam "Long-period fiber gratings for simultaneous temperature and bend sensing", Proc. SPIE 4074, Applications of Optical Fiber Sensors, (31 August 2000); https://doi.org/10.1117/12.397896

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