关键词: 表面等离激元, 光纤, 波导, 互联

Abstract: The author proposes a two-dimensional grating structure on the gold film to achieve optical interconnects between quadruple optical fibers and waveguides of surface plasmon polaritons (SPPs). The structure is composed of four two-dimensional arc gratings of alignment. When the light strikes different structures, SPPs will be excited, focused and coupled to different waveguides, achieving optical interconnects between quadruple optical fibers and waveguides in the form of Equal, Butterfly and Perfect Shuffle Transformation respectively. The field distribution near the focal point is investigated with a simulation method based on Huygens-Fresnel principle and the experiment agrees well with the numerical simulation.

Key words: surface plasmon polariton, optical fiber, waveguide, interconnection