21 August 2014 Transmission characteristics analysis of a hybrid SNIMS plasmonic waveguide
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Abstract
We propose a new kind of hybrid plasmonic waveguide structure, namely the semiconductor nanowire -insulator-metal strip waveguide, or SNIMS. It has been demonstrated using Finite Element Methods (FEM) that this structure support hybrid plasmonic modes traveling over large distances(100~330um) with strong mode confinement (ranging from λ2/300 to λ2/30) at telecom wavelengths. The result is better than that of a traditional semiconductor waveguide. In addition,we stimulated a coupler based on the SNIMS structure. The coupling length Lc can be as short as 2.2um when the separation D=400nm . In other words, this device can be used as a highly compact directional coupler.
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Man Zhang, Junxian Ma, "Transmission characteristics analysis of a hybrid SNIMS plasmonic waveguide", Proc. SPIE 9283, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, 92830A (21 August 2014); doi: 10.1117/12.2069917; https://doi.org/10.1117/12.2069917
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