Fiber optic evanescent field absorption sensor: effect of launching condition and the geometry of the sensing region

Banshi Dhar Gupta; Chandra Deep Singh; Anurag Sharma

doi:10.1117/12.167173

1 June 1994 Fiber optic evanescent field absorption sensor: effect of launching condition and the geometry of the sensing region

Banshi Dhar Gupta, Chandra Deep Singh, Anurag Sharma

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Optical Engineering, Vol. 33, Issue 6, (June 1994). https://doi.org/10.1117/12.167173

Abstract

Fiber optic evanescent wave absorption sensors based on four different designs are described. The launching condition and the geometry of the sensing region are found to be the main parameters that can influence the sensitivity of the sensor. High sensitivity is achieved by launching the selected rays into the fiber having tapered sensing regions. The experimental results obtained are qualitatively explained using a simple model based on meridional rays.

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Banshi Dhar Gupta, Chandra Deep Singh, and Anurag Sharma "Fiber optic evanescent field absorption sensor: effect of launching condition and the geometry of the sensing region," Optical Engineering 33(6), (1 June 1994). https://doi.org/10.1117/12.167173

Published: 1 June 1994

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