Compact Polarization Rotator Based on Surface Plasmon Polariton With Low Insertion Loss
Compact Polarization Rotator Based on Surface Plasmon Polariton With Low Insertion Loss
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DOI：
10.1109/jphot.2012.2195650
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发表时间：
2012-04
影响因子：
2.4
通讯作者：
M. Komatsu;K. Saitoh;M. Koshiba
中科院分区：
文献类型：
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作者：
M. Komatsu;K. Saitoh;M. Koshiba
提出了一种基于模式演化的超紧凑偏振旋转器。该偏振旋转器由硅线波导和线性渐变薄铝组成，硅线波导外覆二氧化硅缓冲层。三维有限元数值模拟表明，在C波段，无论是类TM模到类TE模的偏振转换，还是类TE模到类TM模的偏振转换，都可以得到消光比约为-20 dB，损耗小于4.7 dB的11 μ m长偏振旋转器。
An ultracompact mode-evolution-based polarization rotator is proposed. The polarization rotator consists of silicon wire waveguide covered by silica buffer layer and linearly tapered thin aluminum. Numerical simulations using 3-D finite element method demonstrate that it is possible to obtain an 11-μm-long polarization rotator with about -20-dB extinction ratio and less than 4.7-dB loss in C-band for both polarization conversions from TM-like mode to TE-like mode and from TE-like mode to TM-like mode.