Enhancing Sensitivity of Fiber-Optic Sensors Using Surface Plasmon Resonance

Abstract

Objective: This study aimed to explore the potential of Surface Plasmon Resonance (SPR) in augmenting the sensitivity of fiber-optic sensors, comparing its performance against traditional sensors and gauging its utility across diverse applications.

Materials and Methods: Fiber-optic sensors were integrated with SPR through a meticulous design that incorporated a metal layer, typically gold or silver. These were then subjected to various tests, including stability, reliability, and application-specific scenarios. Performance was assessed both qualitatively and quantitatively, with a focus on statistical evaluations.

Results: SPR-integrated sensors displayed a ten-fold enhancement in sensitivity, detecting biomarkers at concentrations as low as 1 nM and pollutants at 0.5 ppm. Statistical variance for the SPR-integrated sensor was 0.75, a marked improvement from the 0.98 observed in traditional sensors. The reliability coefficient (R) of the SPR sensor stood at an impressive 0.97, juxtaposed against 0.92 for traditional sensors, underlining its superior performance.

Conclusion: Surface Plasmon Resonance, when integrated with fiber-optic sensors, presents a transformative leap in sensor technology. Its heightened sensitivity, coupled with its robust performance metrics, posits it as a game-changer, especially in domains demanding precision and rapid feedback. However, further refinement and exploration in various application fields remain necessary to realize its full potential.