The Effects Of Temperature On The Response Of A Porous Fiber Optic Humidity Sensor

Q. Zhou; M. R. Shahriari; G. H. Sigel Jr.

doi:10.1117/12.959987

19 January 1989 The Effects Of Temperature On The Response Of A Porous Fiber Optic Humidity Sensor

Q. Zhou, M. R. Shahriari, G. H. Sigel Jr.

Proceedings Volume 0990, Chemical, Biochemical, and Environmental Applications of Fibers; (1989) https://doi.org/10.1117/12.959987
Event: O-E/Fiber LASE '88, 1988, Boston, MA, United States

Abstract

Fiber optic waveguides based on porous glasses offer excellent sensitivity and specificity for remote chemical sensing. This paper examines the effect of temperature on the response of a porous fiber optic humidity sensor. Cobalt chloride is used as the colorimetric reagent, permeated into the porous segment of the fiber. The humidity response of the fiber has been evaluated over a temperature range of 25°C to 90°C. Temperature effects appear to result both from changes in the extinction coefficient of cobalt chloride as well as differences in the sensing probe's equilibrium constants. The basic temperature dependence of the humidity sensor has been modeled in an effort to provide compensation for the measurement probe in a real world environment.

Citation Download Citation

Q. Zhou, M. R. Shahriari, and G. H. Sigel Jr. "The Effects Of Temperature On The Response Of A Porous Fiber Optic Humidity Sensor", Proc. SPIE 0990, Chemical, Biochemical, and Environmental Applications of Fibers, (19 January 1989); https://doi.org/10.1117/12.959987

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