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Opt Express. 2011 Aug 1;19(16):15641-51. doi: 10.1364/OE.19.015641.

All-fiber, long-active-length Fabry-Perot strain sensor.

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  • 1University of Maribor, Faculty of EE & Computer Science, Smetanova 17, SI-2000 Maribor, Slovenia.

Abstract

This paper presents a high-sensitivity, all-silica, all-fiber Fabry-Perot strain-sensor. The proposed sensor provides a long active length, arbitrary length of Fabry-Perot cavity, and low intrinsic temperature sensitivity. The sensor was micro-machined from purposely-developed sensor-forming fiber that is etched and directly spliced to the lead-in fiber. This manufacturing process has good potential for cost-effective, high-volume production. Its measurement range of over 3000 µε, and strain-resolution better than 1 µε were demonstrated by the application of a commercial, multimode fiber-based signal processor.

PMID:
21934926
[PubMed - indexed for MEDLINE]
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