Abstract
A novel hybrid plasmonic waveguide (HPW) have been numerically investigated, based on a silicon-on-insulator near the telecom wavelength λ= 1550nm by the finite element method. The HPW consist of a metal surface placed on a low index medium (SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) which surrounded by a high index medium (Si). With proper waveguide sizes, our proposed HPW can support hybrid long-range surface plasmon which have strong mode confinement (A <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">eff</sub> /A <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> = 0.5 - 0.7) and long propagation length (L >; 6.5mm) simultaneously.
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