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中文摘要：
本文设计了一种内壁涂覆单层石墨烯的双椭圆形中空表面等离子波导,采用有限元的方法对其传输特性进行了研究。结果表明,椭圆之间的距离和半短轴的长度增大时,有效折射率的实部减小,传输距离增大,模式面积减小;圆化半径增大时,有效折射率的实部增大,传输距离减小,模式面积增大;工作频率增大时,有效折射率的实部减小,传输距离减小,模式面积减小;温度升高时,有效折射率先增大后减小,传输距离减小,模式面积减小。本文的工作为研究基于石墨烯的波导器件提供了理论依据。
英文摘要：
In this paper,a kind of double elliptical hollow surface plasmonic waveguide coated with a single layer of graphene on the inner wall was proposed.The propagation properties were studied with the finite element method.Its results showed that,when the distance between two ellipses and the elliptical semi minor axis increased,the effective refractive index decreased,while the propagation length increased,and the mode area decreased.When the radius of cohesive arc increased,the effective refractive index increased,the propagation length decreased,and the mode area increased.When the working frequency was higher,the effective refractive index was smaller,while the propagation length was shorter,and the mode area was the smaller.When the temperature was higher,the effective refractive index increased before fell down,while the propagation length was shorter,and the mode area was smaller.This work may provide a theoretical basis for the waveguide devices based on graphene material.
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