A Silicon-Based 3-D Hybrid Long-Range Plasmonic Waveguide for Nanophotonic Integration
A Silicon-Based 3-D Hybrid Long-Range Plasmonic Waveguide for Nanophotonic Integration
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DOI：
10.1109/jlt.2011.2179008
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发表时间：
2012
影响因子：
4.7
通讯作者：
Lin Chen;Xun Li;Guoping Wang;Wei Li;Sihai Chen;Long Xiao;D. Gao
中科院分区：
文献类型：
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作者：
Lin Chen;Xun Li;Guoping Wang;Wei Li;Sihai Chen;Long Xiao;D. Gao
减小薄金属条的宽度和厚度可以有效地增加长程表面等离子体激元的传播距离，但代价是显著降低整体模式限制，这从根本上限制了纳米光子集成中的堆积密度。通过利用介质波导与等离子体激元模式之间的耦合，我们提出了一种硅基3D混合远程等离子体激元波导，不仅支持远程传播，而且具有紧凑的模式尺寸。模拟结果表明，在1.55 μ m处，可以同时实现696 μm的传输距离和0.0013 μm2的超小模面积。
Decreasing the widths and thicknesses of thin metal stripes can effectively increase the propagation distance of long-range surface plasmon polaritons, but at the cost of significant reduction on the overall mode confinement, which fundamentally limits the packing density in nanophotonic integration. By utilizing the coupling between the dielectric waveguide and plasmonic modes, we propose a silicon-based 3-D hybrid long-range plasmonic waveguide that not only supports long-range propagation, but also has compact modal size. Our simulation result shows that a propagation distance of 696 μm with an ultrasmall modal area of 0.0013 μm2 can be simultaneously achieved at 1.55 μ m.