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Proceedings Paper

Bromothymol blue coated fiber optic Fabry-Perot interferometer for ammonia gas sensor
Author(s): Dnyandeo Pawar; S. A. Mane; S. N. Kale
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Paper Abstract

A single mode fiber is used in this study, in a Y-coupler mode; the mirror tip of which is coated with bromothymol blue (BTB), homogeneously mixed in polyvinyl alcohol (PVA) matrix. The setup operated at 1550 nm, and was used to sense extremely small quantities of ammonia gas, at room temperature. The sensor is able to detect ammonia in the range of 1.5 ppm to 150 ppm; with observed sensitivity in terms of wavelength shift of 0.7 nm. The sensor showed excellent reversibility with fast response and recovery time of the order of few seconds. The possible interaction of dye with ammonia was studied and compared with chloroform.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032343 (23 April 2017); doi: 10.1117/12.2265406
Show Author Affiliations
Dnyandeo Pawar, Defence Institute of Advanced Technology (India)
S. A. Mane, Defence Institute of Advanced Technology (India)
S. N. Kale, Defence Institute of Advanced Technology (India)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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