Fiber optic vibration sensor-based smart civil structures

Jinsong Leng; Anand Krishna Asundi

doi:10.1117/12.369347

11 November 1999 Fiber optic vibration sensor-based smart civil structures

Jinsong Leng, Anand Krishna Asundi

Proceedings Volume 3897, Advanced Photonic Sensors and Applications; (1999) https://doi.org/10.1117/12.369347
Event: International Symposium on Photonics and Applications, 1999, Singapore, Singapore

Abstract

Two kinds of fiber optic vibration sensors for civil structure vibration monitoring are proposed in this paper. The first is based on the detection of spatial mode speckle of a multi-mode optical fiber. A multi-mode optical fiber, diameter is 200/230 micrometers , is used in the present experiment. The second method uses an e-core two-mode optical fiber. The experiment on a composite beam with an embedded statistical fiber optic sensor and surface mounted e-core two-mode fiber optic sensor are demonstrated. The experimental results show that the two types of the fiber optic vibration sensor have higher sensitivity compared to piezoelectric sensors along with other benefits of fiber optic sensor, including lower cost.

Citation Download Citation

Jinsong Leng and Anand Krishna Asundi "Fiber optic vibration sensor-based smart civil structures", Proc. SPIE 3897, Advanced Photonic Sensors and Applications, (11 November 1999); https://doi.org/10.1117/12.369347

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