Graphene/PVA coated D-shaped fiber for sodium nitrate sensing

Zain, Huda Adnan and Batumalay, Malathy and Harun, Sulaiman Wadi and Harith, Zuraidah and Yasin, Moh and Rahim, Hazli Rafis Abdul (2021) Graphene/PVA coated D-shaped fiber for sodium nitrate sensing. Sensors and Actuators A: Physical, 332 (2). ISSN 0924-4247, DOI

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A graphene/Polyvinyl alcohol (PVA) coated D-shaped fiber structure for sensing sodium nitrate solutions is proposed in this paper. D-shaped single mode fiber (SMF) coated with graphene/PVA was used as a sensor for sodium nitrate liquid solutions with the concentration range of 1-7%. After monitoring the output power and spectral transmission characteristics of the sensor, the graphene/PVA coated sensor showed an improved performance over the uncoated structure. The evanescent mode of the side-polished fiber and the interaction between the nitrate ions and the coating graphene improved the sensor's performance. The graphene/PVA coated sensor had sensitivity and linearity of 0.390 dBm/% and 99% compared to the uncoated sensor sensitivity and linearity of 0.117 dBm/% and 98% respectively. This shows the advantage of using D-shaped fiber coated with graphene and PVA to detect sodium nitrate concentrations. (c) 2021 Elsevier B.V. All rights reserved.

Item Type: Article
Funders: World Class Research Scheme (2020) through Airlangga University [ 444/UN3.14/PT/2020], INTI Research Grant Scheme 2020 [INTI-FITS-03-2020]
Uncontrolled Keywords: Sodium nitrate; D-shaped fiber; Side polished fiber; Fiber optics sensor
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > Department of Electrical Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 19 Jul 2022 01:56
Last Modified: 19 Jul 2022 01:56

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