Degenerate four-wave mixing in silicon hybrid plasmonic waveguides.
Degenerate four-wave mixing in silicon hybrid plasmonic waveguides.
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DOI：
10.1364/ol.41.000155
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发表时间：
2016
期刊：
影响因子：
3.6
通讯作者：
T. Duffin;M. Nielsen;F. Diaz;S. Palomba;S. Maier;R. Oulton
中科院分区：
文献类型：
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作者：
T. Duffin;M. Nielsen;F. Diaz;S. Palomba;S. Maier;R. Oulton
硅基等离子体波导表现出远超出衍射极限的高限制。各种器件已被证明在微米尺度上优于其电介质对应器件，例如线性调制器，能够产生高场限制，并通过增加非线性过程的访问来提高器件效率，但受欧姆损耗的限制。通过使用混合等离子体波导结构和非线性材料，硅基等离子体波导可以在几个波长上产生强烈的非线性效应。我们从理论上研究了两种具有三种不同非线性材料的混合等离子体波导（HPWG）的非线性光学性能。基于此分析，混合间隙等离子体波导（HGPW）与DDMEBT非线性聚合物相结合，在1μm传播长度上显示出-16.4dB的四波混频（FWM）转换效率，这表明等离子体波导可以在短三个数量级的距离上与标准硅光子结构竞争。
Silicon-based plasmonic waveguides show high confinement well beyond the diffraction limit. Various devices have been demonstrated to outperform their dielectric counterparts at micrometer scales, such as linear modulators, capable of generating high field confinement and improving device efficiency by increasing access to nonlinear processes, limited by ohmic losses. By using hybridized plasmonic waveguide architectures and nonlinear materials, silicon-based plasmonic waveguides can generate strong nonlinear effects over just a few wavelengths. We have theoretically investigated the nonlinear optical performance of two hybrid plasmonic waveguides (HPWG) with three different nonlinear materials. Based on this analysis, the hybrid gap plasmon waveguide (HGPW), combined with the DDMEBT nonlinear polymer, shows a four-wave mixing (FWM) conversion efficiency of -16.4 dB over a 1 μm propagation length, demonstrating that plasmonic waveguides can be competitive with standard silicon photonics structures over distances three orders of magnitude shorter.