Novel optical fiber relative-humidity sensor with optimized parameters

Sunil K. Khijwania; Kirthi L. Srinivasan; Jagdish P. Singh

doi:10.1117/12.516211

8 March 2004 Novel optical fiber relative-humidity sensor with optimized parameters

Sunil K. Khijwania, Kirthi L. Srinivasan, Jagdish P. Singh

Proceedings Volume 5272, Industrial and Highway Sensors Technology; (2004) https://doi.org/10.1117/12.516211
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States

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.

Citation Download Citation

Sunil K. Khijwania, Kirthi L. Srinivasan, and Jagdish P. Singh "Novel optical fiber relative-humidity sensor with optimized parameters", Proc. SPIE 5272, Industrial and Highway Sensors Technology, (8 March 2004); https://doi.org/10.1117/12.516211

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