Abstract
Using plastic optical fiber with multimode (MPOF), an optical fiber sensor (OFS) based on Surface Plasmon Resonance (SP.R) was created and put into use. The sensor is used to determine performance metrics including signal to noiseratio (SNR), Sensitivity(S), Figure of merit(FOM), and Resolution(R) in addition to detecting and measuring the refractive index of different concentrations of citric acid. With a sensing region exposed to 50 nm of gold (Au) metal layer, the optical fiber-based SPR sensor was found to have a sensitivity value of 1250nm, an SNR of 0.27, a figure of merit of 93.3 and a resolution 8×10-4.
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