Optical path correlator for low-coherence multiplexing fiber optic sensor

Yonggui Yuan; Bing Wu; Jun Yang; Libo Yuan

doi:10.1117/12.884727

17 May 2011 Optical path correlator for low-coherence multiplexing fiber optic sensor

Yonggui Yuan, Bing Wu, Jun Yang, Libo Yuan

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 775360 (2011) https://doi.org/10.1117/12.884727
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

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.

Citation Download Citation

Yonggui Yuan, Bing Wu, Jun Yang, and Libo Yuan "Optical path correlator for low-coherence multiplexing fiber optic sensor", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775360 (17 May 2011); https://doi.org/10.1117/12.884727

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