Subwavelength electromagnetic switch: bistable wave transmission of side-coupling nonlinear meta-atom.
Subwavelength electromagnetic switch: bistable wave transmission of side-coupling nonlinear meta-atom.
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DOI：
10.1364/oe.20.024813
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发表时间：
2012-10
期刊：
影响因子：
3.8
通讯作者：
Ya-qiong Ding;Chunhua Xue;Yong Sun;Haitao Jiang;Yunhui Li;Hong-qiang Li;Hong Chen
中科院分区：
文献类型：
--
作者：
Ya-qiong Ding;Chunhua Xue;Yong Sun;Haitao Jiang;Yunhui Li;Hong-qiang Li;Hong Chen
提出了一种利用非线性元原子实现亚波长电磁开关的方案。双稳态响应的概念上证明了微波传输线，这是侧耦合到一个可变电抗器加载的开口环谐振器作为一个非线性元原子。计算和实验结果表明，利用传导耦合代替传输线与非线性元原子之间的近场相互作用，提高了开关性能。开关阈值低至-5.8dBm，两个双态之间的透射对比度高达4.0dB。我们的开关的亚波长尺寸应该是有用的集成光学纳米电路的小型化。
We propose a scheme for subwavelength electromagnetic switch by employing nonlinear meta-atom. Bistable response is conceptually demonstrated on a microwave transmission line, which is side-coupled to a varactor-loaded split ring resonator acting as a nonlinear meta-atom. Calculations and experiments show that by applying conductive coupling instead of near-field interaction between the transmission line and the nonlinear meta-atom, switch performances are improved. The switch threshold of low to -5.8 dBm and the transmission contrast of up to 4.0 dB between the two bistable states were achieved. Subwavelength size of our switch should be useful for miniaturization of integrated optical nanocircuits.