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中文摘要：
本文基于Anderson局域效应和有限时域差分（FDTD）计算方法，对具有一定无序性的多孔硅材料内光的横向局域进行了理论分析，考察了不同无序度、孔洞排列的不同方式对硅材料光学性质的影响。计算结果表明，多孔硅内光的行为和多孔硅的结构参数有很大关系。当结构参数合适时，光束可以呈现比较明显的横向局域效果。适当改变材料中孔道的排列方式，可以有效的调节光在材料中的传播方式与局域效果。设计了具有“边墙”效果的孔洞排列方式，不仅能够固定光斑的位置，而且还可实现光束的局域增强效果。
英文摘要：
Based on the Anderson localization effect and the finite difference time domain （FDTD） method, the photonic energy in porous silicon whose pores is disordered trans versely have been calculated. We have calculated the optical properties of the silicon mate, rials with different disorder degree and different distribution of the holes. The results show that the behavior of light in porous silicon depends strongly on the structural param eters. When the suitable structural parameters calization effect transversely. The propagation fectively adjusted by changing the arrangement are chosen, the beam presents obvious lo and localization of optical beam can be ef of the holes. With designing a ＂sidewall＂ effect in the arrangement of the holes, we not only have achieved that the spot can be fixed at a fixed position, but also have showed the effect of localization enhancement in the hole distribution of the silicon materials.
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