Simulation and design of electromagnetic illusion devices

• Main Authors: Shang-RuYu, 余尚儒
• Other Authors: Tungyang Chen
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/64897415337834915331

碩士 === 國立成功大學 === 土木工程學系碩博士班 === 98 === Starting with two pioneering papers published in Science by Pendry et al. and Leonhardt in 2006, the new concept has attracted numerous researchers to explore the possibility to control the propagation of electromegnetic waves and optical light. This category of study is now referred to as transformation optics. This thesis is concerned with a number of theoretical aspects that arise in the design of various optical devices. First, following chain-rule operations in partial differential equations, we derive the transformation identity in two-dimensional curvilinear orthogonal coordiantes. Next, we propose several optical illusion devices based on curvilinear coordiantes. A particular example is given to elliptical coordiantes. We demonstrate the effectness of the devices based on numerical finite element calculations. In addition, we propose a unified mathematical formula that allows us to describe several optical devices, such as cloak, rotator, translator, concentrator, in a single framework. This provides new perspectives to interprete the devices in a new way. Lastly, we show that based on curvilinear coordiantes the transformation media will not disturb the exterior fields before the transformation.