Wedge-like surface plasmonic waveguide with controllable mode characteristics

Abstract

Abstract: Surface plasmon polariton (SPP) waveguides have been paid extensive attention for their unique properties, breaking the diffraction limit of light and providing subwavelength mode confinement. Plasmonic Surface plasmonic waveguides proposed before scarcely involve the tunability of the mode confinement and propagation loss by adjusting the geometric parameters. Here, we propose proposed a wedge-like surface plasmonic waveguide and study studied its properties by finite element method (FEM). The wedge-like surface plasmonic waveguide features ultra-deep subwavelength mode confinement. The mode confinement and attenuation of the wedge-like surface plasmonic waveguide are controllable by adjusting the waveguide parameters, which makes our wedge-like surface plasmonic waveguide more flexible and could meet different requirements for mode area and propagation length at the same wavelength.

Key words: fiber and waveguide optics, controllable mode characteristics, finite element method, surface plasmon polariton

Wencheng Yue, Peijun Yao, Runxia Tao, Xiaolin Chen, Hai Ming. Wedge-like surface plasmonic waveguide with controllable mode characteristics[J]. Chinese Journal of Quantum Electronics.

References

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