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Etched fiber Bragg grating sensor for nitrate sensing application


Mohd Razali, Nazirah and Ambran, Sumiaty and Hamzah, Azura and Abdullah, Norhayati and Mikami, Osamu and Hara, Hirofumi and Lokman, Mohammad Quisar and Yaacob, Mohd Hanif (2018) Etched fiber Bragg grating sensor for nitrate sensing application. In: 2018 IEEE 7th International Conference on Photonics (ICP), 9-11 Apr. 2018, Langkawi, Kedah, Malaysia. .


We demonstrate a reliable method to detect the concentration of Nitrate in water using an etched Fiber Bragg Grating (FBG) sensor. The sensor was etched using 48% Hydrofluoric (HF) acid solution to function as a chemical sensor and interact with Nitrates. The Bragg wavelength (λb) shifted due to the changes of Nitrate concentration. The sensitivity achieved by this sensor is 2.4 × 10-3 nm/ppm. The overall shift of the Bragg wavelength is 0.12 nm from 0 - 50 ppm.

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Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1109/ICP.2018.8533177
Publisher: IEEE
Keywords: Nitrate ions; Fiber Bragg grating sensor
Depositing User: Nabilah Mustapa
Date Deposited: 10 May 2019 08:32
Last Modified: 10 May 2019 08:32
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1109/ICP.2018.8533177
URI: http://psasir.upm.edu.my/id/eprint/68365
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