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.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 18 Mar 2019|
|Event||Newton Researcher Links Workshop 2018: Bio-Photonics For Medical Technologies - Malacca, Malaysia|
Duration: 23 Jul 2018 → 25 Jul 2018