AEgis Technologies, Nanogenesis Division, Huntsville, Alabama 35806, USA.
Opt Lett. 2012 Jan 15;37(2):121-3. doi: 10.1364/OL.37.000121.
We exploit the properties of ultranarrow, Fano-like resonances generated by the coupling of long range surface plasmons with ultrathin (~10 nm), metallic, subwavelength gratings embedded in a nonlinear, cubic material to obtain all-optical switching at telecommunication wavelengths for extremely low input power. We provide an example of a silver metallic grating embedded in a chalcogenide glass (As2S3), and we show the concrete possibility to achieve all-optical switching at local field intensities compatible with the photo-darkening threshold of the material.
我们利用长程表面等离子体与嵌入在非线性立方材料中的超薄（约 10nm）金属亚波长光栅耦合产生的超窄、类 Fano 共振的特性，以极低的输入功率在远程通信波长处获得全光开关。我们提供了一个例子，即一个嵌入在硫属化物玻璃（As2S3）中的银金属光栅，并展示了在与材料光致变暗阈值兼容的局域场强度下实现全光开关的具体可能性。
