Salinity Sensor Based on 1D Photonic Crystals by Tamm Resonance with Different Geometrical Shapes

In this paper, we demonstrate a novel salinity sensor based on Tamm-plasmon-polariton (TPP), comprising different shapes of Bragg reflector (ordinary, texturing, and sawtooth) metallic layer. The finite element method is used to study the considered structure sensing performance by using COMSOL multiphysics simulation procedure. Here, effect surface morphology sensitivity; firstly, in case one-dimensional photonic crystal-centered defect, it harms secondly, texturing sawtooth Tamm resonance increases sensitivity, as for surface, sensitivity quality factor (Q) = 236 figure merit (FOM) 170. For surfaces, Q 272.4, FOM 199. consequences structural parameters efficiency are studied, new procedures proposed enhance TPP-based sensors. A simple functional alternative conventional sensors may be solution.