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Proceedings Paper

Strain and temperature measurement using a 9.5-m continuous chirped fiber Bragg grating with millimeter resolution
Author(s): K. Fröjdh; G. Hedin; S. Helmfrid
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Paper Abstract

A 9.5-m continuous chirped fiber Bragg grating (CFBG) interrogated with an optical frequency domain reflectometer is used for strain and temperature measurements. The spatial resolution is 4 mm and the noise level is 0.1 K corresponding to 1 μstrain. The strain profile is also derived from the optical reflection spectrum alone, and the results are in good agreement with the profile obtained from the optical frequency domain reflectometer. A CFBG in combination with a high-resolution interrogator can therefore enable a cost-efficient continuous strain sensor.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103238D (23 April 2017); doi: 10.1117/12.2265602
Show Author Affiliations
K. Fröjdh, Proximion AB (Sweden)
G. Hedin, Proximion AB (Sweden)
S. Helmfrid, Proximion AB (Sweden)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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