All-Optical Logic Gates Based on Nanoscale Plasmonic Slot Waveguides

被引：329
作者：
Fu, Yulan
Hu, Xiaoyong [1 ]
Lu, Cuicui
Yue, Song
Yang, Hong
Gong, Qihuang
机构：
[1] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
来源：
NANO LETTERS | 2012年 / 12卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Surface plasmon polaritons; all-optical logic gates; plasmonic slot waveguide; linear interference effect; LIGHT;
D O I：
10.1021/nl303095s
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report realizations of nanoscale integrated all-optical XNOR, XOR, NOT, and OR logic gates using plasmonics slot waveguides based on linear interference between surface plasmon polariton modes. The miniature device size with.. lateral dimensions smaller than 5 mu m,. precisely controlled optical phase difference, and quasi-monochromatic surface plasmon. polariton modes excited by a continuous wave 830 nm laser beam ensure a high intensity contrast ratio of 24 dB between the output logic states "1" and "0". Compared with previous reported results, the. intensity contrast ratio is enhanced 4-fold, whereas the lateral dimension is reduced 4-fold. These compact. logic devices are stable, robust, free from environmental impact, and much suitable for practical on chip applications These also provide a means to construct all-optical devices and nanophotonic processors
引用
收藏
页码：5784 / 5790
页数：7
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