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논문 기본 정보

자료유형
학술저널
저자정보
Cun-Hua Zhao (Luoyang Normal University)
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.4 No.4
발행연도
2020.8
수록면
326 - 329 (4page)

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초록· 키워드

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The Eaton lens, with spherical symmetry to its refractive index, was described by Eaton in 1952 and was found recently in the design of an invisible sphere for cloaking. In this paper, an Eaton lens for rotating 90° was designed using Luneburg theory, by which we found it was a fourth-order equation in the refractive index n. Therefore, the refractive index n has four roots. The equation in n was solved and studied using mathematical technology. The unsuitable complex roots of the equation should be dropped; consequently, only one of the four roots remained. To verify the refractive-index profile, the only root was solved for, before a simulation using finite-element analysis (FEA) was performed. The simulation showed that all rays will bend 90° to the right. The result of the simulation is identical to our expectation. This treatment provides a possible method for rotating light at many other angles.

목차

Ⅰ. INTRODUCTION
Ⅱ. DESIGN OF AN EATON LENS WITH ROTATION ANGLE OF 90°
Ⅲ. SIMULATION USING FINITE-ELEMENT ANALYSIS (FEA)
Ⅳ. CONCLUSION
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