Plasmonic nanoantennas as integrated coherent perfect absorbers on SOI waveguides for modulators and all-optical switches
Plasmonic nanoantennas as integrated coherent perfect absorbers on SOI waveguides for modulators and all-optical switches
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DOI：
10.1364/oe.21.027652
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发表时间：
2013-11-18
期刊：
影响因子：
3.8
通讯作者：
Muskens, Otto L.
中科院分区：
文献类型：
--
作者：
Bruck, Roman;Muskens, Otto L.
探索了 SOI 线波导顶部的等离子体纳米天线结构作为调制器和全光开关的相干完美吸收器的性能。通过针对沿波导传播的单波以及由两个反向传播波组成的驻波场景的 3D 时域有限差分模拟，计算了金和铝纳米天线负载波导的吸收、散射、反射和透射光谱。所研究的配置显示调制器和开关应用的损耗约为 1%，消光比大于 25 dB，以及纳米天线区域中的强场增强和局域化等等离激元效应。所提出的等离子体相干完美吸收器可用于相干网络中的超紧凑全光开关以及调制器，并且可以在传感或增加非线性效应中找到应用。 (C) 2013 美国光学学会
The performance of plasmonic nanoantenna structures on top of SOI wire waveguides as coherent perfect absorbers for modulators and all-optical switches is explored. The absorption, scattering, reflection and transmission spectra of gold and aluminum nanoantenna-loaded waveguides were calculated by means of 3D finite-difference time-domain simulations for single waves propagating along the waveguide, as well as for standing wave scenarios composed from two counterpropagating waves. The investigated configurations showed losses of roughly 1% and extinction ratios greater than 25 dB for modulator and switching applications, as well as plasmon effects such as strong field enhancement and localization in the nanoantenna region. The proposed plasmonic coherent perfect absorbers can be utilized for ultracompact all-optical switches in coherent networks as well as modulators and can find applications in sensing or in increasing nonlinear effects. (C) 2013 Optical Society of America