Design of miniaturized silicon wire and slot waveguide polarization splitterbased on a resonant tunneling.
Design of miniaturized silicon wire and slot waveguide polarization splitterbased on a resonant tunneling.
复制标题
DOI：
10.1364/oe.17.019225
复制
发表时间：
2009-10
期刊：
影响因子：
3.8
通讯作者：
M. Komatsu;K. Saitoh;M. Koshiba
中科院分区：
文献类型：
--
作者：
M. Komatsu;K. Saitoh;M. Koshiba
我们提出了一种基于共振隧穿现象的超小型偏振分束器。该偏振分束器由两个相同的水平椭圆形硅线波导组成，它们被垂直缝隙波导分开。中心谐振槽波导的结构参数被设计为仅耦合左右侧硅线波导之间的类TM模式。采用全矢量光束传输法进行数值模拟，结果表明，该偏振分束器长度为16 μ m，在整个C波段消光比优于-20 dB。
We propose an ultra-small polarization splitter based on a resonant tunneling phenomenon. This polarization splitter consists of two identical horizontally oblong silicon wire waveguides separated by a vertical slot waveguide. The structural parameters of the central resonant slot waveguide are designed to couple only the TM-like mode between the left and right side silicon wire waveguides. Results from numerical simulation with the full-vectorial beam propagation method show that a 16-mum-long polarization splitter with extinction ratio better than -20 dB on the entire C-band is achieved.