Bromothymol blue coated fiber optic Fabry-Perot interferometer for ammonia gas sensor

Dnyandeo Pawar; S. A. Mane; S. N. Kale

doi:10.1117/12.2265406

23 April 2017 Bromothymol blue coated fiber optic Fabry-Perot interferometer for ammonia gas sensor

Dnyandeo Pawar, S. A. Mane, S. N. Kale

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032343 (2017) https://doi.org/10.1117/12.2265406
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

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.

Citation Download Citation

Dnyandeo Pawar, S. A. Mane, and S. N. Kale "Bromothymol blue coated fiber optic Fabry-Perot interferometer for ammonia gas sensor", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032343 (23 April 2017); https://doi.org/10.1117/12.2265406

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