Alawsi, S.M.K. (2018) “Concentration Sensor Design Using Wavelength Shift Based Photonic Crystal Fibre”, Iraqi Journal of Science, 58(4C), pp. 2496–2503. Available at: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/148 (Accessed: 8 December 2025).