Effect of surface roughness on sensitivity of unclad fiber-optic sensors

Azrad, Mohamad Hashim and Mohd Rashidi, Salim and Hummad Habib, Qazi and Muhammad Yusof, Mohd Noor and Asrul Izam, Azmi and Mohd Haniff, Ibrahim and Hadi, Manap (2023) Effect of surface roughness on sensitivity of unclad fiber-optic sensors. In: Journal of Physics: Conference Series; 4th International Conference on Emerging Electrical Energy, Electronics and Computing, ICE4CT 2022 , 28-29 December 2022 , Hybrid, Arau. pp. 1-10., 2550 (012018). ISSN 1742-6588

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This work presents the effect of surface roughness's effect on transmission characteristics and the sensitivity of unclad fiber optic sensor (FOS). A total of three samples with different surface roughness were fabricated using the chemical etching technique using different chemical solutions which are 49% hydrofluoric acid (HF), 5:1 Buffered Oxide Etchants (BOE), and 7:1 BOE to analyze the spectrum behavior and the performance of these samples. All samples were fabricated by immersing the 4 cm of sensing zone inside the chemical solution according to the etching rate of that solution. Every sample fabricated will be measured using five different concentrations of glucose which were 5g, 10g, 15g, 20g, and 25g as an experiment medium. From the measurement, the results obtained will be analyzed and the graphs were plotted. The power loss for all solutions were analyzed and the least recorded power loss is 32.49 dB exhibited by FOS fabricated in the 49% HF solution while the best sensitivity in terms of power loss is FOS fabricated in the 5:1 BOE solution with the highest sensitivity of 9.526 dB/g at 5g of glucose concentration.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Indexed by Scopus
Uncontrolled Keywords: BOE; Chemical etching; Sensitivity; Surface roughness; Unclad fiber sensor
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: College of Engineering
Faculty of Electrical and Electronic Engineering Technology
Depositing User: Mr Muhamad Firdaus Janih@Jaini
Date Deposited: 06 Nov 2023 07:06
Last Modified: 06 Nov 2023 07:06
URI: http://umpir.ump.edu.my/id/eprint/38795
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