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Proceedings Paper

Fiber optic evanescent field absorption sensor based on a tapered probe: effect of fiber parameters on the response curve
Author(s): S. K. Khijwania; Banshi Dhar Gupta
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Paper Abstract

An experimental study of the fiber-optic evanescent field absorption sensor based on tapered sensing probe is presented. The influences of numerical aperture, core radius of the fiber and the taper ratio on the sensitivity of the sensor are investigated. Increase in the numerical aperture of the fiber increases the sensitivity of the sensor while the decrease in the core radius increases the sensitivity. In addition, for a given fiber, increase in taper ratio increases the sensitivity. The relationship has been found to be linear.

Paper Details

Date Published: 28 April 1999
PDF: 7 pages
Proc. SPIE 3666, International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '98, (28 April 1999); doi: 10.1117/12.347980
Show Author Affiliations
S. K. Khijwania, Indian Institute of Technology/Delhi (India)
Banshi Dhar Gupta, Indian Institute of Technology/Delhi (India)


Published in SPIE Proceedings Vol. 3666:
International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '98
Anurag Sharma; Banshi Dhar Gupta; Ajoy K. Ghatak, Editor(s)

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