Fast-response fiber-optic anemometer with temperature self-compensation

Guigen Liu, Weilin Hou, Wei Qiao, Ming Han

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We report a novel fiber-optic anemometer with self-temperature compensation capability based on a Fabry-Pérot interferometer (FPI) formed by a thin silicon film attached to the end face of a single-mode fiber. Guided in the fiber are a visible laser beam from a 635 nm diode laser used to heat the FPI and a white-light in the infrared wavelength range as the signal light to interrogate the optical length of the FPI. Cooling effects on the heated sensor head by wind is converted to a wavelength blueshift of the reflection spectral fringes of the FPI. Self-temperature-compensated measurement of wind speed is achieved by recording the difference in fringe wavelengths when the heating laser is turned on and then off. Large thermal-optic coefficient and thermal expansion coefficient of silicon render a high sensitivity that can also be easily tuned by altering the heating laser power. Furthermore, the large thermal diffusivity and the small mass of the thin silicon film endow a fast sensor response.

Original languageEnglish (US)
Pages (from-to)13562-13570
Number of pages9
JournalOptics Express
Volume23
Issue number10
DOIs
StatePublished - Jan 1 2015

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anemometers
fiber optics
interferometers
laser heating
silicon films
wavelengths
temperature compensation
fibers
temperature
sensors
coefficients
thermal diffusivity
temperature measurement
thermal expansion
semiconductor lasers
recording
laser beams
optics
cooling
heat

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Fast-response fiber-optic anemometer with temperature self-compensation. / Liu, Guigen; Hou, Weilin; Qiao, Wei; Han, Ming.

In: Optics Express, Vol. 23, No. 10, 01.01.2015, p. 13562-13570.

Research output: Contribution to journalArticle

Liu, Guigen ; Hou, Weilin ; Qiao, Wei ; Han, Ming. / Fast-response fiber-optic anemometer with temperature self-compensation. In: Optics Express. 2015 ; Vol. 23, No. 10. pp. 13562-13570.
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