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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 25 — Sep. 1, 2012
  • pp: 6227–6232

Revisiting twin-core fiber sensors for high-temperature measurements

Patrik Rugeland and Walter Margulis  »View Author Affiliations

Applied Optics, Vol. 51, Issue 25, pp. 6227-6232 (2012)

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A twin-core fiber Michelson interferometer is evaluated as a high-temperature sensor. Although linear and reproducible operation up to 300°C is obtained, at higher temperatures (700°C) the refractive index shifts plastically and hysteresis is observed, rendering an untreated sensor head unusable. The shift is shown to be greatly reduced by an annealing process of the fiber for 10 h at 900°C, with which the linear response is preserved.

© 2012 Optical Society of America

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.6780) Instrumentation, measurement, and metrology : Temperature

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 14, 2012
Revised Manuscript: August 7, 2012
Manuscript Accepted: August 10, 2012
Published: August 30, 2012

Patrik Rugeland and Walter Margulis, "Revisiting twin-core fiber sensors for high-temperature measurements," Appl. Opt. 51, 6227-6232 (2012)

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