Abstract
In this paper, we have inspected the optical characteristics of one-dimensional periodic structure (1DPS) of TiO2 and MgF2 dielectric materials with defect layer of liquid crystal (LC) sandwiched with two silver layers, i.e., (TiO2|MgF2)3|Ag|LC|Ag|(TiO2/MgF2)3 using transfer matrix method (TMM). The optical tunable properties of considered periodic structures investigated at different incident angles and temperatures for TE and TM modes. Our study shows that absorption peak of 1DPS varies with incident angle and temperature. The defect layer (Ag-LC-Ag), sandwiched LC within two metallic (Ag) layers, exhibits the surface plasmon waves at the metal LC interfaces. The effect of surface plasmon waves can be better understand through the optical sensing property of such defect periodic structure. The detailed study concludes that such a type of one-dimensional periodic structure (1DPS) may be useful to design a tunable sensor and monochromatic filter.
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