Fiber optic sensing of relative humidity using a twin low coherence interferometer

Authors

  • A.V. Khomenko
  • J. Tapia-Mercado
  • M.A. García-Zarate

Keywords:

Fiber-optics sensors, sagnac interferometer, low-coherence interferometry, birefringent fiber, relative humidity

Abstract

A fiber-optic implementation of psychrometer is reported. It consists of two Sagnac interferometers with twisted highly birefringent fiber that is used as a temperature sensitive element. One interferometer is used for dry-bulb temperature measurement and the other is for wet-bulb temperature monitoring. The interrogation technique for low coherence interferometric sensor with signal processing in spectral domain is described. The measurement uncertainties for temperature and relative humidity measurements no worse than $0.01^{\circ }$C and $4%$, respectively, have been achieved experimentally.

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Published

2010-01-01

How to Cite

[1]
A. Khomenko, J. Tapia-Mercado, and M. García-Zarate, “Fiber optic sensing of relative humidity using a twin low coherence interferometer”, Rev. Mex. Fís., vol. 56, no. 3, pp. 208–0, Jan. 2010.

Issue

Vol. 56 No. 3 (2010): Revista Mexicana de Física.

Section

Articles

License

Authors retain copyright and grant the Revista Mexicana de Física right of first publication with the work simultaneously licensed under a CC BY-NC-ND 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.