Mid-infrared water pollutant sensor based on SPR-PCF. - Gamal, Yusuf; Younis, B. M.; Abd-Elkader, Ahmed El-Sayed; Furniss, David; Farries, Mark; Phang, Sendy; Benson, Trevor M.; Seddon, Angela B.; Hameed, Mohamed Farhat O.; Obayya, S. S. A. (Optical & Quantum Electronics, 2023)