Computer Simulation of the Subwavelength Design for Different Characteristic Equations

Abstract:

The subwavelength focusing lens usually can not focus on the preset focus. There are many factors leading to the errors, and one of the most important factors is the choosing of the dispersion relation. In this paper, different dispersion relations are studied and the applicable conditions are found for both the period characteristic equation and the MIM characteristic equation in designing the focusing lens. A focusing lens with long focal depth is designed according the applicable condition and the accuracy of the design is verified by the simulation of FDTD method. It is believed that this study will provide useful information for further designing of the subwavelength lens.

• Periodical: Applied Mechanics and Materials (Volumes 380-384)
• Pages: 1226-1230
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.380-384.1226
• Online since: August 2013
• Authors: Tai Zhi Fan, Xing Xing Zhao
• Keywords: Characteristic Equations, Computer Simulation, Subwavelength

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