Huda Adnan Zain,Malathy Batumalay,Hazli Rafis Abdul Rahim,Moh Yasin,Sulaiman Wadi Harun.Single-walled carbon nanotubes coated D-shaped fiber for aqueous ethanol detection[J].Optoelectronics Letters,2022,(7):430-433 Single-walled carbon nanotubes coated D-shaped fiber for aqueous ethanol detection Author Name Affiliation Huda Adnan Zain  Department of Electrical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia  Malathy Batumalay  Faculty of Information Technology, INTI International University, Nilai 71800, Malaysia  Hazli Rafis Abdul Rahim  Faculty of Electronic and Computer Engineering, Universiti Teknikal Malaysia Melaka, Melaka, Malaysia  Moh Yasin  Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya, Indonesia  Sulaiman Wadi Harun  Department of Electrical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya, Indonesia  Abstract:       In this letter, single-walled carbon nanotubes (SWCNT) coating was used on the D-shaped silica fiber for ethanol sensing in aqueous solution. The performance of this structure as an ethanol sensor was studied here by monitoring output power variation and wavelength shift with changing ethanol concentration. In the concentration range of 5%—50% of ethanol, the SWCNT coated structure showed an improved sensitivity compared to the uncoated sample. The sensitivity is improved from 0.013 5 dB/% to 0.040 9 dB/% with the coating. The SWCNT coated sample also showed a peak wavelength shift of 0.1 nm with the change of ethanol concentration in the same range. Hits: 244 Download times: 0 View Full Text    Download reader