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A distributed frequency modulation continuous wave fiber stress sensor based on a birefringent sagnac ring configuration

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Abstract

A new distributed stress sensor, based on a birefringent fiber Sagnac ring configuration and frequency modulation continuous wave technology, has been investigated. The two forward-coupled mode beams in the Sagnac ring, induced by an applied stress at any given point along the fiber length, produce a beat frequency which can be analysed to determine, simultaneously, the magnitude and position of the stress. The system has a reasonable spatial resolution of 1 m in a dynamic sensing range of 50 m.

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Authors and Affiliations

  1. Department of Physical Sciences, Glasgow Caledonian University, Cowcaddens Road, G4 OBA, Glasgow, UK

    Michael Campbell, Gang Zheng, Peter A. Wallace & A. Sheila Holmes-Smith

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  1. Michael Campbell
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  2. Gang Zheng
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  3. Peter A. Wallace
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  4. A. Sheila Holmes-Smith
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Campbell, M., Zheng, G., Wallace, P.A. et al. A distributed frequency modulation continuous wave fiber stress sensor based on a birefringent sagnac ring configuration. Optical Review 4, A114–A116 (1997). https://doi.org/10.1007/BF02936007

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  • DOI: https://doi.org/10.1007/BF02936007

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