Microbottle resonator formaldehyde sensor. (January 2019)

• Record Type: Journal Article
• Authors: Johari, M A M; Abdul Khudus, M I M; Al Noman, A; Jali, M H; Yusof, H H M; Harun, S W; Yasin, M
• Is Part Of: Journal of physics. Volume 1151(2019)
• Publication Date: 2019-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1151/1/012021
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: We investigate the use of whispering gallery mode (WGM) optical microbottle resonator (MBR) as a sensor for liquid formaldehyde sensor. An MBR fabricated via the "soften-and-compress" method with a diameter of 190 μm was optically excited by using a non-adiabatic 2 μm optical microfibre and employed to measure formaldehyde with concentrations of between 0% and 5%, with the results compared with the performance of a bare microfibre. The MBR sensor was found to have a sensitivity of 4.397 dB/% with 90 % linearity and were generally outperforms the bare microfiber sensor by a wide margin.