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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 13 — Jul. 1, 2014
  • pp: 3966–3969

Fiber-optic flow sensors for high-temperature environment operation up to 800°C

Rongzhang Chen, Aidong Yan, Qingqing Wang, and Kevin P. Chen  »View Author Affiliations

Optics Letters, Vol. 39, Issue 13, pp. 3966-3969 (2014)

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This Letter presents an all-optical high-temperature flow sensor based on hot-wire anemometry. High-attenuation fibers (HAFs) were used as the heating elements. High-temperature-stable regenerated fiber Bragg gratings were inscribed in HAFs and in standard telecom fibers as temperature sensors. Using in-fiber light as both the heating power source and the interrogation light source, regenerative fiber Bragg grating sensors were used to gauge the heat transfer from an optically powered heating element induced by the gas flow. Reliable gas flow measurements were demonstrated between 0.066m/s and 0.66m/s from the room temperature to 800°C. This Letter presents a compact, low-cost, and multiflexible approach to measure gas flow for high-temperature harsh environments.

© 2014 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(280.2490) Remote sensing and sensors : Flow diagnostics
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: March 28, 2014
Revised Manuscript: April 24, 2014
Manuscript Accepted: May 6, 2014
Published: June 27, 2014

Rongzhang Chen, Aidong Yan, Qingqing Wang, and Kevin P. Chen, "Fiber-optic flow sensors for high-temperature environment operation up to 800°C," Opt. Lett. 39, 3966-3969 (2014)

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