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Optical Engineering • Open Access

Microcavity strain sensor for high temperature applications

Paper Abstract

A microcavity extrinsic Fabry–Perot interferometric (EFPI) fiber-optic sensor is presented for measurement of strain. The EFPI sensor is fabricated by micromachining a cavity on the tip of a standard single-mode fiber with a femtosecond (fs) laser and is then self-enclosed by fusion splicing another piece of single-mode fiber. The fs-laser-based fabrication makes the sensor thermally stable to sustain temperatures as high as 800°C. The sensor exhibits linear performance for a range up to 3700 με and a low temperature sensitivity of only 0.59  pm/°C through 800°C.

Paper Details

Date Published: 24 January 2014
PDF: 4 pages
Opt. Eng. 53(1) 017105 doi: 10.1117/1.OE.53.1.017105
Published in: Optical Engineering Volume 53, Issue 1
Show Author Affiliations
Amardeep Kaur, Missouri Univ. of Science and Technology (United States)
Steve E. Watkins, Missouri Univ. of Science and Technology (United States)
Jie Huang, Missouri Univ. of Science and Technology (United States)
Lei Yuan, Beijing Institute of Technology (China)
Hai Xiao, Missouri Univ. of Science and Technology (United States)


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