International Journal of Applied Science and Engineering
Published by Chaoyang University of Technology

Ang Chuan Shi1, Abdul Mu’iz Maidi1, Norazanita Shamsuddin1, Md Abul Kalam2, Feroza Begum1*

1 Faculty of Integrated Technologies, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Bandar Seri Begawan BE1410, Brunei Darussalam

2 Faculty of Engineering and Information Technology, University of Technology Sydney, 15 Broadway Ultimo, NSW 2007, Australia


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A photonic crystal fibre (PCF) based alcohol sensor with extremely low birefringence has been proposed for different alcohol analytes of propanol, butanol and pentanol, operating within 0.8 to 2.0 µm wavelength. A structural design of three layers of circular cladding air holes with three elliptical core holes has been designed and simulated to distinguish the capabilities of the PCF as a sensor, which accomplished high relative sensitivity, low confinement loss and extremely low birefringence. At the examined optimum wavelength of 0.8 µm, the assessed relative sensitivities are 93.3%, 88.7% and 82.2% for propanol, butanol and pentanol, respectively, and confinement losses of 9.80 × 1/1013 dB/m for propanol, 4.91 × 1/1013 dB/m for butanol and 1.03 × 1/1013 dB/m for pentanol. The birefringence of the proposed PCF is about 0.0001 for all the selected test analytes. Moreover, considering the simple cross-sectional design, it shall be easily fabricated for practical alcohol detection.

Keywords: Photonic crystal fibre, Alcohol sensor, Relative sensitivity, Confinement loss.

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Received: 2022-10-19
Revised: 2023-01-06
Accepted: 2023-01-17
Available Online: 2023-05-01

Cite this article:

Shi, A.C., Maidi, A.M., Shamsuddin, N., Kalam, M.A., Begum, F. Photonic crystal fibre sensor for alcohol detection with extremely low birefringence. International Journal of Applied Science and Engineering, 20, 2022178.

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