Microfiber loop resonator for formaldehyde liquid sensing

Jali, Mohd Hafiz and Rahim, Hazli Rafis Abdul and Hamid, Sana Sulaiman and Johari, Md Ashadi Md and Yusof, Haziezol Helmi Mohd and Thokchom, Siddharth and Harun, Sulaiman Wadi and Khasanah, Miratul and Yasin, Moh (2019) Microfiber loop resonator for formaldehyde liquid sensing. Optik, 196. p. 163174. ISSN 0030-4026, DOI https://doi.org/10.1016/j.ijleo.2019.163174.

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Official URL: https://doi.org/10.1016/j.ijleo.2019.163174


This work employed the whispering gallery mode (WGM) of microfiber loop resonator (MLR) for formaldehyde (CH2O) liquid sensing application. A significant sensing response to different concentrations of formaldehyde liquid from 0% to 5% was observed due to the surface absorption and changeable refractive index resulting in different light attenuation in the silica microfiber. As the concentration increases, the output power of the MLR decreased linearly from −18.9 dB m to −36.2.dBm with sensitivity increased by a factor of 2.5 as compared to straight microfiber (SmF). As for resolution, the MLR improved by a factor of 3.28 as compared to SmF. © 2019 Elsevier GmbH

Item Type: Article
Funders: University of Malaya, Universiti Teknikal Malaysia Melaka and Ministry of Education, Malaysia for their financial support: ( FRGS/1/2018/TK04/UTEM/02/30 )
Uncontrolled Keywords: Whispering gallery mode; Microfiber loop resonator; Formaldehyde; Straight microfiber
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 26 Mar 2020 06:58
Last Modified: 26 Mar 2020 06:58
URI: http://eprints.um.edu.my/id/eprint/24119

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