光学学报, 2009, 29 (s2): 106, 网络出版: 2010-01-27
多重散射方法模拟梯度折射率光子晶体的透镜效应
Simulating of Lens Effect of Graded-Index Photonic Crystals by Multiple-Scattering Method
光学器件 多重散射方法 梯度折射率透镜 光子晶体波导 optical devices multiple-scattering method (MSM) graded-index lens photonic crystal waveguide (PCW)
摘要
建立了空气孔径呈现横向线性变化的三角形网格梯度折射率光子晶体平板透镜二维模型，应用多重散射方法(MSM)，对该模型在波长平面光入射的情况下， TE模式的电磁场分布进行了数值模拟，从而验证了该光子晶体透镜的聚焦效果；再通过横向延拓的方法，将上述两个透镜并联，并在并联后结构的双光轴的焦点位置放置一对折射率光子晶体管道波导，得到了一个新型的分光装置模型。数值模拟结果表明，该装置能很好地实现聚焦、分光和准直的效果。
Abstract
A 2D triangular-lattice photonic crystal (PC) with graded-index (GRIN) structure was presented. The multiple-scattering method (MSM) was applied to simulate the distribution of the electromagnetic field of TE mode with an input plane wave, by which the focusing effect of the model was proved. Through connecting two GRIN lens and combining with two conventional PC waveguides (PCW), a light splitting element was designed. The results show that it is effectively to focus, split and collimate an incident plane wave with a short simple structure.
原森, 刘友文, 赫崇君. 多重散射方法模拟梯度折射率光子晶体的透镜效应[J]. 光学学报, 2009, 29(s2): 106. Yuan Sen, Liu Youwen, He Chongjun. Simulating of Lens Effect of Graded-Index Photonic Crystals by Multiple-Scattering Method[J]. Acta Optica Sinica, 2009, 29(s2): 106.
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