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Proceedings Paper

Optical path correlator for low-coherence multiplexing fiber optic sensor
Author(s): Yonggui Yuan; Bing Wu; Jun Yang; Libo Yuan
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Paper Abstract

Based on a cavity length tunable fiber loop resonator, a multi-beam optical path difference is generated. It can be used to match and correlate the reflective signals from the partial reflective ends of each sensing fiber gauge. The correlation signals corresponding to the sensing gauge lengths. And the shift of the correlation peak related with the fiber sensing gauge elongation caused by strain or temperature. Therefore, it can be used to measure distributed strain or deformation for smart structural monitoring.

Paper Details

Date Published: 18 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775360 (18 May 2011); doi: 10.1117/12.884727
Show Author Affiliations
Yonggui Yuan, Harbin Engineering Univ. (China)
Bing Wu, Harbin Engineering Univ. (China)
Jun Yang, Harbin Engineering Univ. (China)
Libo Yuan, Harbin Engineering Univ. (China)


Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors

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