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Updated: May 16, 2025
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Independent emission spectra of different fluorescent dyes based quasi-distributed polymer optical fiber surface
Azween Hadiera Hishamuddin1, Ahmad Sabirin Zoolfakar1, Nur Hidayah Azeman2
1Faculty of Electrical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia.
Abstract:
This study explores the development of quasi-distributed polymer optical fiber (POF) surface plasmon resonance (SPR) sensors, leveraging independent emission spectra for enhanced oxygen (O2) detection. By integrating the strengths of SPR, POF, and fluorescence-based sensing techniques, this research addresses the limitations of traditional O2 sensors. The sensors utilized platinum octaethylporphyrin (PtOEP), 5,10,15,20-tetrakis(pentafluorophenyl)-21H,23H-porphine palladium (II) (PdTFPP), and tris(4,7-diphenyl-1,10-phenanthroline) ruthenium (II) dichloride ([Ru(dpp)3]2+), fluorescence dyes, providing distinct and independent emission spectra at 646 nm for Ag/PtOEP, 669 nm for Ag/PdTFPP and 520 nm for Ag/[Ru(dpp)3]2+, enable multiplexing and spatially resolved measurements. It was demonstrated that Ag/PtOEP, Ag/PdTFPP and Ag/[Ru(dpp)3]2+ coatings yield high sensitivity and linearity in O2 detection. Specifically, the sensitivity values achieved are 0.048 nm/% for the Ag/PtOEP coating, 0.1317 nm/% for the Ag/PdTFPP coating, and 0.0191 nm/% for the Ag/[Ru(dpp)3]2+ coating. The sensors exhibit a coefficient of determination (R2) of 0.9702, 0.9893 and 0.9337 for Ag/PtOEP, Ag/PdTFPP, and Ag/[Ru(dpp)3]2+, respectively, highlighting their accuracy and reliability. The quasi-distributed POF SPR sensors have the potential to deliver precise, reliable, and real-time O2 monitoring across various applications, including environmental monitoring, medical diagnostics, and industrial safety.
