Hudelist F, Buczynski R, Waddie A J, Taghizadeh M R
Heriot Watt University, School of Engineering and Physical Sciences, Edinburgh, UK, EH14 4AS.
Opt Express. 2009 Mar 2;17(5):3255-63. doi: 10.1364/oe.17.003255.
We present a novel fabrication technology for nano-structured graded index micro-optical components, based on the stack-and-draw method used for photonic crystal fibres. These discrete structures can be described with an effective refractive index distribution. Furthermore we present spherical nano-structured microlenses with a flat facet fabricated with this method and designed using an algorithm based on the Maxwell-Garnett mixing formula. Finally we show theoretical verification by using FDTD simulations for a nano-structured lens as well as experimental data obtained in the microwave regime.
我们提出了一种用于纳米结构渐变折射率微光学元件的新型制造技术，该技术基于用于光子晶体光纤的堆叠拉制方法。这些离散结构可以用有效折射率分布来描述。此外，我们展示了用这种方法制造并使用基于麦克斯韦-加尼特混合公式的算法设计的具有平面小面的球形纳米结构微透镜。最后，我们通过对纳米结构透镜进行时域有限差分（FDTD）模拟展示了理论验证以及在微波波段获得的实验数据。
