Authors : Vivek Kumar Verma; Deepika Verma; Parimal Tiwari; Sachin Singh; Vipin Sharma

Volume/Issue : Volume 11 - 2026, Issue 7 - July

Google Scholar : https://tinyurl.com/ydteexes

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DOI : https://doi.org/10.38124/ijisrt/26jul329

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Abstract : This investigation presents a rigorous computational evaluation of a Surface Plasmon Resonance (SPR) sensor architecture employing the Kretschmann configuration. Optical performance was characterized using the Transfer Matrix Method (TMM) via angular interrogation at a 633 nm excitation wavelength. The optimized design achieved an angular sensitivity of 193.50°/RIU, a detection accuracy of 0.59 deg.-1 , a quality factor of 114.3 RIU⁻¹, and a figure of merit of 191.18 RIU⁻¹ within a refractive index interval of 1.33 to 1.35. To quantify analytical efficacy and selectivity, critical performance metrics including detection accuracy, quality factor, and figure of merit (FOM), were systematically assessed. These findings highlight the sensor's substantial potential for advanced biomedical diagnostics and offer significant contributions to the fields of materials science and plasmonic instrumentation.

Keywords : Plasmon, Angular Sensitivity, Kretschmann Configuration, Transfer Matrix Method.

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