This study examines the capabilities of a one-dimensional photonic sensor for detecting glucose concentration levels of aqueous solutions in the visible region of the electromagnetic spectrum. This design works on the principle of Tamm-Fano resonance due to a plasmonic thin layer of metallic aluminium mounted on the top of a Distributed Bragg Reflector (DBR). The DBR structure is composed of alternating high and low refractive index layers of materials \(TiO_2\) and \(MgF_2\) , respectively. An air cavity consisting of a microfluidic cell is integrated between the Al layer and the DBR to facilitate analyte detection. The entire analysis of reflection spectra is carried out in the visible region of the electromagnetic spectrum, extending from 450 to 750 nm. The simulation results are obtained by using MATLAB and COMSOL Multiphysics 6.0 software. Our design under s-polarisation oblique incidence case exhibits impressive performance metrics, showing a maximum sensitivity of 562.6349 nm/RIU, a quality factor of 347.7686, and a figure of merit of 357.6827 at AOI \(40^{\circ }\) . Our findings suggest that the proposed structure offers superior performance in contrast to the existing photonic designs, especially in the visible region of the spectrum. The proposed idea may be used for the development of future photonic devices suitable for biosensing applications, chemical and gas detection in the visible region of the spectrum.
