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Proceedings Paper

Novel optical fiber relative-humidity sensor with optimized parameters
Author(s): Sunil K. Khijwania; Kirthi L. Srinivasan; Jagdish P. Singh
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Paper Abstract

We report a novel fiber optic relative humidity sensor based on the evanescent wave absorption spectroscopy. A comprehensive study of the sensor was made in terms of performance optimization against various parameters, which affects the sensor response and sensitivity e.g. film composition, film thickness, fiber core diameter and the sensor geometry. The sensor was compared against a commercially available relative humidity sensor and was found to be sensitive to relative humidity ranging from ~1.6 % to ~92%. We found that the sensor was having a very fast response to the relative humidity, and was fully reversible, repeatable with an extremely large dynamical range.

Paper Details

Date Published: 8 March 2004
PDF: 7 pages
Proc. SPIE 5272, Industrial and Highway Sensors Technology, (8 March 2004); doi: 10.1117/12.516211
Show Author Affiliations
Sunil K. Khijwania, Mississippi State Univ. (United States)
Kirthi L. Srinivasan, Mississippi State Univ. (United States)
Jagdish P. Singh, Mississippi State Univ. (United States)


Published in SPIE Proceedings Vol. 5272:
Industrial and Highway Sensors Technology
Brian Culshaw; Samuel David Crossley; Helmut E. Knee; Michael A. Marcus; John P. Dakin, Editor(s)

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