In-plane light propagation in Ta/sub 2/O/sub 5//SiO/sub 2/ autocloned photonic crystals
In-plane light propagation in Ta/sub 2/O/sub 5//SiO/sub 2/ autocloned photonic crystals
复制标题
Ta/sub 2/O/sub 5//SiO/sub 2/自克隆光子晶体中的面内光传播
DOI：
10.1109/jqe.2002.1017605
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发表时间：
2002
影响因子：
2.5
通讯作者：
S. Kawakami
中科院分区：
文献类型：
--
作者：
T. Sato;Y. Ohtera;N. Ishino;K. Miura;S. Kawakami
本文研究了用自克隆方法制备的二维光子晶体的平面内光传播特性，该晶体在保留周期性表面波纹的情况下堆叠多层。数值分析表明，Ta/sub 2/O/sub 5//SiO/sub 2/自克隆光子晶体可以通过调整单位结构的宽高比获得足够的有效折射率变化，适用于波导和透镜。该晶体具有宽的带隙，适用于布拉格反射器和谐振器。实验结果表明，在/spl λ /=1.55 /spl mu/m时，两个方向的面内传播损耗均小于1.4 dB/mm，表明该晶体可用于低损耗的面内器件。
We investigate the characteristics of in-plane light propagation in 2-D photonic crystals fabricated by the autocloning method, by which multiple layers are stacked while preserving periodic surface corrugation. A numerical analysis shows that Ta/sub 2/O/sub 5//SiO/sub 2/ autocloned photonic crystals are applicable to waveguides and lenses since a sufficient amount of change of the effective refractive index is obtained by adjusting the aspect ratio of the unit structure. It is also shown that the crystals have a wide bandgap applicable to Bragg reflectors and resonators. Experimental results reveal that in-plane propagation losses for the two directions are less than 1.4 dB/mm at /spl lambda/=1.55 /spl mu/m, showing the crystals are useful for low loss in-plane devices.