Distributed stress sensor based on a birefringent fiber Sagnac ring

Michael Campbell; Gang Zheng; Peter A. Wallace; Sheila Smith

doi:10.1117/12.259792

27 November 1996 Distributed stress sensor based on a birefringent fiber Sagnac ring

Michael Campbell, Gang Zheng, Peter A. Wallace, Sheila Smith

Proceedings Volume 2838, Distributed and Multiplexed Fiber Optic Sensors VI; (1996) https://doi.org/10.1117/12.259792
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

This paper describes a novel configuration of a distributed optical fiber stress sensor based on a Sagnac ring construction. The principle of operation is based on the FMCW technique. The intensity and location of a stress applied to the fiber can be determined simultaneously by detecting the amplitude and the frequency of the beat signal which is produced by two forward-coupled mode beams in the Sagnac ring. The system was found to have a spatial resolution of 1 meter in a sensing range of 50 meters.

Citation Download Citation

Michael Campbell, Gang Zheng, Peter A. Wallace, and Sheila Smith "Distributed stress sensor based on a birefringent fiber Sagnac ring", Proc. SPIE 2838, Distributed and Multiplexed Fiber Optic Sensors VI, (27 November 1996); https://doi.org/10.1117/12.259792

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