School of Physics and Astronomy, the University of Manchester, Manchester, M13 9PL, UK.
School of Computer Science, the University of Manchester, Manchester, M13 9PL, UK.
Sci Rep. 2017 Mar 24;7:45196. doi: 10.1038/srep45196.
We propose a hybrid plasmonic device consisting of a planar dielectric waveguide covering a gold nanostripe array fabricated on a gold film and investigate its guiding properties at telecom wavelengths. The fundamental modes of a hybrid device and their dependence on the key geometric parameters are studied. A communication length of 250 μm was achieved for both the TM and TE guided modes at telecom wavelengths. Due to the difference between the TM and TE light propagation associated with the diffractive plasmon excitation, our waveguides provide polarization separation. Our results suggest a practical way of fabricating metal-nanostripes-dielectric waveguides that can be used as essential elements in optoelectronic circuits.
我们提出了一种混合等离子体器件，由覆盖在金薄膜上的金纳米条阵列的平面介质波导组成，并研究了其在电信波长下的导波特性。研究了混合器件的基本模式及其对关键几何参数的依赖性。在电信波长下，TM 和 TE 导模的通信长度均达到了 250 μm。由于与衍射等离子体激发相关的 TM 和 TE 光传播之间的差异，我们的波导提供了偏振分离。我们的结果表明了一种制造金属纳米条-介质波导的实用方法，这种波导可以作为光电电路中的基本元件。
