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带缺陷结构的二维磁性光子晶体的数值模拟分析
引用本文:张浩,赵建林,张晓娟.带缺陷结构的二维磁性光子晶体的数值模拟分析[J].物理学报,2009,58(5):3532-3537.
作者姓名:张浩  赵建林  张晓娟
作者单位:西北工业大学理学院光信息科学与技术研究所,陕西省光信息技术重点实验室,西安 710072
基金项目:国家自然科学基金委员会/中国航空工业第一集团公司航空科技联合基金(批准号:10477016)资助的课题.
摘    要:利用频域有限差分方法分析了多种带缺陷结构二维磁性光子晶体(二重对称,四重对称和六重对称结构)的法拉第旋转角与椭圆率的变化特性.结果表明:在这些结构中,光波均被局域在中心缺陷处;同时,对于具有四重对称轴结构的材料,在其法拉第旋转角增加的同时,出射光波的椭圆率没有明显的增加;但对于不具有四重对称轴结构的材料,其法拉第旋转角增加的同时,出射光波的椭圆率也在增加.因此,只有在具有四重对称轴结构的二维磁性光子晶体中引入缺陷,才能很好地抑制光波偏振态的变化.这种带缺陷的二维磁性光子晶体结构有可能用于制作磁性光子晶体光 关键词: 磁光效应 二维磁性光子晶体 缺陷 频域有限差分法

关 键 词:磁光效应  二维磁性光子晶体  缺陷  频域有限差分法
收稿时间:2007-12-02
修稿时间:5/4/2008 12:00:00 AM

Numerical analysis of two-dimensional magnetophotonic crystals with structural defects
Zhang Hao,Zhao Jian-Lin,Zhang Xiao-Juan.Numerical analysis of two-dimensional magnetophotonic crystals with structural defects[J].Acta Physica Sinica,2009,58(5):3532-3537.
Authors:Zhang Hao  Zhao Jian-Lin  Zhang Xiao-Juan
Abstract:The Faraday rotation of two-dimensional magnetophotonic crystals (including those with fourfold-symmetry and non-fourfold-symmetry) with structural defects and the ellipticity of outgoing optical waves are analyzed by using finite-difference frequency-domain (FDFD) method. The numerical simulation results show that the localization of the light wave in the vicinity of central defect occurs in these types of the structure. With increasing Faraday rotation of fourfold-symmetry structures, the change of the ellipticity of outgoing optical waves from these structures is unobvious. In contrast, the increases of the ellipticity of outgoing optical waves are obvious with the raise of Faraday rotation in non-fourfold-symmetry structures. It is concluded that introducing defects to the fourfold-symmetry structure constrains the change of the state of polarization of optical waves. This kind of two-dimensional magnetophotonic crystal with structural defects may be used to manufacture magnetophotonic crystal fiber.
Keywords:magneto-optical effect  two-dimensional magnetophotonic crystals  structural defect  finite-difference frequency-domain
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