Far Field Detection of Different Elements Using Photonic Crystals
In this paper, various structures of Photonic crystal waveguides (PCWs) are proposed by introducing various types of line defects. Finite Difference Time Domain (FDTD) method is used to analyze the far-field pattern of each structure for three different elements, namely, diamond, gypsum and tourmaline having refractive index values 2.418, 1.5, 1.65, respectively. The effect of changing in radius of rods on maximum far-field intensity is also observed. Among all the five proposed structures, Structure 4 with slant line defects came up with best results in terms of maximum far-field intensity and transmittance (72.8%) and minimum reflectance (23.1%). The compact and low cost proposed structures can be used to find out refractive index of various elements that are extracted during mining operations by properly analyzing their far-field patterns.
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Document Type: Research Article
Publication date: April 1, 2017
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- Journal of Nanoelectronics and Optoelectronics (JNO) is an international and cross-disciplinary peer reviewed journal to consolidate emerging experimental and theoretical research activities in the areas of nanoscale electronic and optoelectronic materials and devices into a single and unique reference source. JNO aims to facilitate the dissemination of interdisciplinary research results in the inter-related and converging fields of nanoelectronics and optoelectronics.
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