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.

在本文中，我们研究了TiO ₂和MgF ₂介电材料的一维周期性结构（1DPS）的光学特性，其中液晶（LC）的缺陷层夹有两个银层，即（TiO ₂ | MgF ₂）³ | Ag | LC | Ag |（TiO ₂ / MgF ₂）³使用传输矩阵方法（TMM）。对于TE和TM模式，在不同的入射角和温度下研究了所考虑的周期性结构的光学可调特性。我们的研究表明1DPS的吸收峰随入射角和温度而变化。缺陷层（Ag-LC-Ag），将LC夹在两个金属（Ag）层中，在金属LC界面处显示表面等离激元波。通过这种缺陷周期性结构的光学传感特性，可以更好地理解表面等离激元波的影响。详细的研究得出的结论是，这种类型的一维周期性结构（1DPS）可能对设计可调传感器和单色滤波器有用。