Cylindrical hybrid plasmonic waveguide for subwavelength confinement of light
Cylindrical hybrid plasmonic waveguide for subwavelength confinement of light
复制标题
用于亚波长光限制的圆柱形混合等离子体波导
DOI：
10.1364/ao.49.006868
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发表时间：
2010-12-20
期刊：
影响因子：
1.9
通讯作者：
Chen, Daru
中科院分区：
文献类型：
--
作者：
Chen, Daru
提出了一种新型圆柱形混合等离子体波导来实现光的亚波长限制。通过由二氧化硅层和硅层包围的金属芯，所提出的圆柱形混合等离子体波导可以在工作波长（1550 nm）下实现环形结构模式分布。大多数模式功率位于纳米级厚度（例如50、20甚至5 nm）的二氧化硅层中，这是由于硅-二氧化硅界面处电场法向分量的强烈不连续性和二氧化硅-金属界面处激发的表面等离子体激元波的影响。研究了具有不同结构参数的圆柱形混合等离子体波导，并观察到了数十微米（甚至数百微米）的相对较长的传播距离。 (C) 2010 美国光学学会
A novel cylindrical hybrid plasmonic waveguide is proposed to achieve subwavelength confinement of light. With a metal core surrounded by a silica layer and a silicon layer, the proposed cylindrical hybrid plasmonic waveguide can achieve a ring-structure mode profile at the operating wavelength (1550 nm). Most mode power locates in the silica layer with a nanoscale thickness (e. g., 50, 20, or even 5 nm), which is due to the effects of both a strong discontinuity of the normal component of the electric field at the silicon-silica interface and the exited surface plasmon wave at the silica-metal interface. Cylindrical hybrid plasmonic waveguides with different structure parameters are investigated and a relatively long propagation distance of tens of micrometers (or even hundreds of micrometers) is observed. (C) 2010 Optical Society of America